Commit Graph

118137 Commits

Author SHA1 Message Date
James Hogan f4956f620d MIPS: KVM: Use cacheops.h definitions
Drop the custom cache operation code definitions used by KVM for
emulating guest CACHE instructions, and switch to use the existing
definitions in <asm/cacheops.h>.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Gleb Natapov <gleb@kernel.org>
Cc: kvm@vger.kernel.org
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/11893/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-01-24 03:30:41 +01:00
James Hogan 5fa393c857 MIPS: Break down cacheops.h definitions
Most of the cache op codes defined in cacheops.h are split into a 2-bit
cache identifier, and a 3-bit cache op code which does largely the same
thing semantically regardless of the cache identifier.

To allow the use of these definitions by KVM for decoding cache ops,
break the definitions down into parts where it makes sense to do so, and
add masks for the Cache and Op field within the cache op.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Gleb Natapov <gleb@kernel.org>
Cc: kvm@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/11892/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-01-24 03:29:58 +01:00
James Hogan 1b505defe0 MIPS: Use EXCCODE_ constants with set_except_vector()
The first argument to set_except_vector is the ExcCode, which we now
have definitions for. Lets make use of them.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Gleb Natapov <gleb@kernel.org>
Cc: linux-mips@linux-mips.org
Cc: kvm@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/11894/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-01-24 03:28:21 +01:00
James Hogan 044c9bb816 MIPS: Update trap codes
Add a few missing trap codes.

[ralf@linux-mips.org: Drop removal of exception codes.  I don't care what
the incomplete architecture spec says; it can't change existing hardware
and VCEI is supported indeed.]

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Gleb Natapov <gleb@kernel.org>
Cc: kvm@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/11890/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-01-24 03:20:46 +01:00
James Hogan 16d100db24 MIPS: Move Cause.ExcCode trap codes to mipsregs.h
Move the Cause.ExcCode trap code definitions from kvm_host.h to
mipsregs.h, since they describe architectural bits rather than KVM
specific constants, and change the prefix from T_ to EXCCODE_.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Gleb Natapov <gleb@kernel.org>
Cc: linux-mips@linux-mips.org
Cc: kvm@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/11891/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-01-24 03:15:51 +01:00
James Hogan 2db9d23386 MIPS: KVM: Make kvm_mips_{init,exit}() static
The module init and exit functions have no need to be global, so make
them static.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Gleb Natapov <gleb@kernel.org>
Cc: kvm@vger.kernel.org
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/11889/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-01-24 03:15:01 +01:00
James Hogan 088ec208d6 MIPS: KVM: Refactor added offsetof()s
When calculating the offsets into the commpage for dynamically
translated mtc0/mfc0 guest instructions, multiple offsetof()s are added
together to find the offset of the specific register in the mips_coproc,
within the commpage.

Simplify each of these cases to a single offsetof() to find the offset
of the specific register within the commpage.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Gleb Natapov <gleb@kernel.org>
Cc: linux-mips@linux-mips.org
Cc: kvm@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/11888/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-01-24 03:14:15 +01:00
James Hogan cb1b447f0c MIPS: KVM: Convert EXPORT_SYMBOL to _GPL
Export symbols only to GPL modules to match other KVM symbols in
virt/kvm/ and arch/*/kvm/.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Gleb Natapov <gleb@kernel.org>
Cc: linux-mips@linux-mips.org
Cc: kvm@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/11887/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-01-24 03:13:24 +01:00
James Hogan e318f0fd37 MIPS: KVM: Drop unused kvm_mips_host_tlb_inv_index()
The function kvm_mips_host_tlb_inv_index() is unused, so drop it
completely.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Gleb Natapov <gleb@kernel.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: linux-mips@linux-mips.org
Cc: kvm@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/11886/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-01-24 03:09:36 +01:00
James Hogan 9fd4af639b MIPS: Move definition of DC bit to mipsregs.h
The CAUSEB_DC and CAUSEF_DC definitions used by KVM are defined in
asm/kvm_host.h, but all the other Cause register field definitions are
found in asm/mipsregs.h.

Lets reunite the DC bit definitions with its friends in mipsregs.h.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Gleb Natapov <gleb@kernel.org>
Cc: linux-mips@linux-mips.org
Cc: kvm@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/11885/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-01-24 03:07:35 +01:00
James Hogan 4c53e6b985 MIPS: KVM: Drop some unused definitions from kvm_host.h
Some definitions in the MIPS asm/kvm_host.h are completely unused, so
lets drop them.

MS_TO_NS is no longer used since commit e30492bbe9 ("MIPS: KVM:
Rewrite count/compare timer emulation"). The others don't appear ever to
have been used.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Gleb Natapov <gleb@kernel.org>
Cc: kvm@vger.kernel.org
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/11884/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-01-24 03:06:43 +01:00
James Hogan caa1faa7ab MIPS: KVM: Trivial whitespace and style fixes
A bunch of misc whitespace and style fixes within arch/mips/kvm/.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Gleb Natapov <gleb@kernel.org>
Cc: kvm@vger.kernel.org
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/11883/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-01-24 03:05:48 +01:00
Joshua Henderson 097d5638cb MIPS: pic32mzda: Add initial PIC32MZDA Starter Kit defconfig
This adds an initial default config that enables all available PIC32
drivers and is enough for booting a PIC32MZDA Starter Kit.

Signed-off-by: Joshua Henderson <joshua.henderson@microchip.com>
Cc: linux-kernel@vger.kernel.org
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/12105/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-01-24 02:54:32 +01:00
Joshua Henderson 842b6b16f5 MIPS: dts: Add initial DTS for the PIC32MZDA Starter Kit
This adds basic DTS configuration for the PIC32MZDA chip and in turn the
PIC32MZDA Starter Kit.

Signed-off-by: Joshua Henderson <joshua.henderson@microchip.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Ian Campbell <ijc+devicetree@hellion.org.uk>
Cc: Kumar Gala <galak@codeaurora.org>
Cc: Andrew Bresticker <abrestic@chromium.org>
Cc: Paul Burton <paul.burton@imgtec.com>
Cc: linux-kernel@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/12104/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-01-24 02:54:00 +01:00
Joshua Henderson 2572f00db8 MIPS: Add support for PIC32MZDA platform
This adds support for the Microchip PIC32 MIPS microcontroller with the
specific variant PIC32MZDA. PIC32MZDA is based on the MIPS m14KEc core
and boots using device tree.

This includes an early pin setup and early clock setup needed prior to
device tree being initialized. In additon, an interface is provided to
synchronize access to registers shared across several peripherals.

Signed-off-by: Joshua Henderson <joshua.henderson@microchip.com>
Cc: linux-kernel@vger.kernel.org
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/12097/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-01-24 02:53:28 +01:00
Álvaro Fernández Rojas 70ce14bfc9 MIPS: bmips: Improve BCM6368 device tree
Add brcm,bcm6358-leds node to bcm6368.dtsi
Add reboot support (syscon-reboot as defined in BCM6328)

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Cc: f.fainelli@gmail.com
Cc: jogo@openwrt.org
Cc: cernekee@gmail.com
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: devicetree@vger.kernel.org
Cc: Álvaro Fernández Rojas <noltari@gmail.com>
Patchwork: https://patchwork.linux-mips.org/patch/12117/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-01-24 02:34:36 +01:00
Álvaro Fernández Rojas db66dbbbfd MIPS: bmips: Improve BCM6328 device tree
Adds bcm6328-leds node to bcm6328.dtsi

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Cc: jogo@openwrt.org
Cc: cernekee@gmail.com
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: devicetree@vger.kernel.org
Cc: Álvaro Fernández Rojas <noltari@gmail.com>
Patchwork: https://patchwork.linux-mips.org/patch/12116/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-01-24 02:34:26 +01:00
James Hogan 555fae60b2 MIPS: ptrace: Drop cp0_tcstatus from regoffset_table[]
The cp0_tcstatus member of struct pt_regs was removed along with the
rest of SMTC in v3.16, commit b633648c5a ("MIPS: MT: Remove SMTC
support"), however recent uprobes support in v4.3 added back a reference
to it in the regoffset_table[] in ptrace.c. Remove it.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Fixes: 40e084a506 ("MIPS: Add uprobes support.")
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/11920/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-01-24 02:24:24 +01:00
Linus Walleij 8cbe4b5cbc MIPS: TXx9: iocled: Be sure to clamp return value
As we want gpio_chip .get() calls to be able to return negative
error codes and propagate to drivers, we need to go over all
drivers and make sure their return values are clamped to [0,1].
We do this by using the ret = !!(val) design pattern.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Cc: linux-mips@linux-mips.org
Cc: linux-gpio@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/11925/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-01-24 02:23:08 +01:00
Linus Walleij 8eb248fa8b MIPS: RB532: Be sure to clamp return value
As we want gpio_chip .get() calls to be able to return negative
error codes and propagate to drivers, we need to go over all
drivers and make sure their return values are clamped to [0,1].
We do this by using the ret = !!(val) design pattern.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Cc: linux-mips@linux-mips.org
Cc: linux-gpio@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/11924/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-01-24 02:22:39 +01:00
Linus Walleij 6ea6b7faf0 MIPS: TXx9: Be sure to clamp return value
As we want gpio_chip .get() calls to be able to return negative
error codes and propagate to drivers, we need to go over all
drivers and make sure their return values are clamped to [0,1].
We do this by using the ret = !!(val) design pattern.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Cc: linux-mips@linux-mips.org
Cc: linux-gpio@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/11923/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-01-24 02:22:14 +01:00
Linus Walleij 249e573d99 MIPS: ar7: Be sure to clamp return value
As we want gpio_chip .get() calls to be able to return negative
error codes and propagate to drivers, we need to go over all
drivers and make sure their return values are clamped to [0,1].
We do this by using the ret = !!(val) design pattern.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Cc: Alban Bedel <albeu@free.fr>
Cc: linux-mips@linux-mips.org
Cc: linux-gpio@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/11922/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-01-24 02:21:47 +01:00
Linus Walleij 7b42c00a95 MIPS: Alchemy: Be sure to clamp return value
As we want gpio_chip .get() calls to be able to return negative
error codes and propagate to drivers, we need to go over all
drivers and make sure their return values are clamped to [0,1].
We do this by using the ret = !!(val) design pattern.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Cc: linux-mips@linux-mips.org
Cc: linux-gpio@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/11921/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-01-24 02:20:45 +01:00
Jaedon Shin 2549cc967e MIPS: Fix macro typo
Change the CONFIG_MIPS_CMDLINE_EXTEND to CONFIG_MIPS_CMDLINE_DTB_EXTEND
to resolve the EXTEND_WITH_PROM macro.

Signed-off-by: Jaedon Shin <jaedon.shin@gmail.com>
Fixes: 2024972ef5 ("MIPS: Make the kernel arguments from dtb available")
Reviewed-by: Alexander Sverdlin <alexander.svedlin@gmail.com>
Cc: Jonas Gorski <jogo@openwrt.org>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Paul Burton <paul.burton@imgtec.com>
Cc: Aaro Koskinen <aaro.koskinen@nokia.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/11909/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-01-24 02:12:25 +01:00
Matt Redfearn 497e803ebf MIPS: smp-cps: Ensure secondary cores start with EVA disabled
The kernel currently assumes that a core will start up in legacy mode
using the exception base provided through the CM GCR registers. If a
core has been configured in hardware to start in EVA mode, these
assumptions will fail.

This patch ensures that secondary cores are initialized to meet these
assumptions.

Signed-off-by: Matt Redfearn <matt.redfearn@imgtec.com>
Reviewed-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/11907/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-01-24 02:09:53 +01:00
Maciej W. Rozycki a68f376844 MIPS: io.h: Define `ioremap_cache'
Signed-off-by: Maciej W. Rozycki <macro@imgtec.com>
Cc: Brian Norris <computersforpeace@gmail.com>
Cc: Rafał Miłecki <zajec5@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/12040/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-01-24 01:44:21 +01:00
Maciej W. Rozycki 6d7b14151d MIPS: math-emu: dsemul: Reduce `get_isa16_mode' clutter
Signed-off-by: Maciej W. Rozycki <macro@imgtec.com>
Cc: Aurelien Jarno <aurelien@aurel32.net>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/12178/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-01-24 01:37:09 +01:00
Maciej W. Rozycki 29e2800348 MIPS: inst.h: Fix some instruction descriptions
Fix the description of the microMIPS NOP16 encoding or MM_NOP16, which
is not equivalent to the MIPS16 NOP instruction.  This is 0x0c00 and
represents the microMIPS `MOVE16 $0, $0' operation, whereas MIPS16 NOP
is encoded as 0x6500, representing `MOVE $0, $16'.

Also fix a typo in `mm_fp0_format' description.

Signed-off-by: Maciej W. Rozycki <macro@imgtec.com>
Cc: Aurelien Jarno <aurelien@aurel32.net>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/12177/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-01-24 01:36:50 +01:00
Maciej W. Rozycki 6e1715f7c3 MIPS: math-emu: dsemul: Correct description of the emulation frame
Remove irrelevant content from the description of the emulation frame in
`mips_dsemul', referring to bare-metal configurations.  Update the text,
reflecting the change made with commit ba3049ed40 ("MIPS: Switch FPU
emulator trap to BREAK instruction."), where we switched from using an
address error exception on an unaligned access to the use of a BREAK 514
instruction causing a breakpoint exception instead.

Signed-off-by: Maciej W. Rozycki <macro@imgtec.com>
Cc: Aurelien Jarno <aurelien@aurel32.net>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/12176/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-01-24 01:36:31 +01:00
Maciej W. Rozycki 69a1e6cbdf MIPS: math-emu: Correct the emulation of microMIPS ADDIUPC instruction
Emulate the microMIPS ADDIUPC instruction directly in `mips_dsemul'.  If
executed in the emulation frame, this instruction produces an incorrect
result, because the value of the PC there is not the same as where the
instruction originated.

Reshape code so as to handle all microMIPS cases together.

Signed-off-by: Maciej W. Rozycki <macro@imgtec.com>
Cc: Aurelien Jarno <aurelien@aurel32.net>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/12175/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-01-24 01:36:10 +01:00
Maciej W. Rozycki 733b8bc183 MIPS: math-emu: Make microMIPS branch delay slot emulation work
Complement commit 102cedc32a ("MIPS: microMIPS: Floating point
support.") which introduced microMIPS FPU emulation, but did not adjust
the encoding of the BREAK instruction used to terminate the branch delay
slot emulation frame.  Consequently the execution of any such frame is
indeterminate and, depending on CPU configuration, will result in random
code execution or an offending program being terminated with SIGILL.

This is because the regular MIPS BREAK instruction is encoded with the 0
major and the 0xd minor opcode, however in the microMIPS instruction set
this major/minor opcode pair denotes an encoding reserved for the DSP
ASE.  Instead the microMIPS BREAK instruction is encoded with the 0
major and the 0x7 minor opcode.

Use the correct BREAK encoding for microMIPS FPU emulation then.

Signed-off-by: Maciej W. Rozycki <macro@imgtec.com>
Cc: Aurelien Jarno <aurelien@aurel32.net>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/12174/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-01-24 01:35:46 +01:00
Maciej W. Rozycki a87265cfed MIPS: math-emu: dsemul: Fix ill formatting of microMIPS part
Correct formatting breakage introduced with commit 102cedc32a ("MIPS:
microMIPS: Floating point support."), so that further changes to this
code can be consistent.

Signed-off-by: Maciej W. Rozycki <macro@imgtec.com>
Cc: Aurelien Jarno <aurelien@aurel32.net>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/12173/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-01-24 01:35:26 +01:00
Maciej W. Rozycki e4553573b3 MIPS: math-emu: Correctly handle NOP emulation
Fix an issue introduced with commit 9ab4471c9f ("MIPS: math-emu:
Correct delay-slot exception propagation") where the emulation of a NOP
instruction signals the need to terminate the emulation loop.  This in
turn, if the PC has not changed from the entry to the loop, will cause
the kernel to terminate the program with SIGILL.

Consider this program:

static double div(double d)
{
	do
		d /= 2.0;
	while (d > .5);
	return d;
}

int main(int argc, char **argv)
{
	return div(argc);
}

which gets compiled to the following binary code:

00400490 <main>:
  400490:	44840000 	mtc1	a0,$f0
  400494:	3c020040 	lui	v0,0x40
  400498:	d44207f8 	ldc1	$f2,2040(v0)
  40049c:	46800021 	cvt.d.w	$f0,$f0
  4004a0:	46220002 	mul.d	$f0,$f0,$f2
  4004a4:	4620103c 	c.lt.d	$f2,$f0
  4004a8:	4501fffd 	bc1t	4004a0 <main+0x10>
  4004ac:	00000000 	nop
  4004b0:	4620000d 	trunc.w.d	$f0,$f0
  4004b4:	03e00008 	jr	ra
  4004b8:	44020000 	mfc1	v0,$f0
  4004bc:	00000000 	nop

Where the FPU emulator is used, depending on the number of command-line
arguments this code will either run to completion or terminate with
SIGILL.

If no arguments are specified, then BC1T will not be taken, NOP will not
be emulated and code will complete successfully.

If one argument is specified, then BC1T will be taken once and NOP will
be emulated.  At this point the entry PC value will be 0x400498 and the
new PC value, set by `mips_dsemul' will be 0x4004a0, the target of BC1T.
The emulation loop will terminate, but SIGILL will not be issued,
because the PC has changed.  The FPU emulator will be entered again and
on the second execution BC1T will not be taken, NOP will not be emulated
and code will complete successfully.

If two or more arguments are specified, then the first execution of BC1T
will proceed as above.  Upon reentering the FPU emulator the emulation
loop will continue to BC1T, at which point the branch will be taken and
NOP emulated again.  At this point however the entry PC value will be
0x4004a0, the same as the target of BC1T.  This will make the emulator
conclude that execution has not advanced and therefore an unsupported
FPU instruction has been encountered, and SIGILL will be sent to the
process.

Fix the problem by extending the internal API of `mips_dsemul', making
it return -1 if no delay slot emulation frame has been made, the
instruction has been handled and execution of the emulation loop needs
to continue as if nothing happened.  Remove code from `mips_dsemul' to
reproduce steps made by the emulation loop at the conclusion of each
iteration, as those will be reached normally now.  Adjust call sites
accordingly.  Document the API.

Signed-off-by: Maciej W. Rozycki <macro@imgtec.com>
Cc: Aurelien Jarno <aurelien@aurel32.net>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/12172/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-01-24 01:34:47 +01:00
Huacai Chen 4f33f6c522 MIPS: Fix some missing CONFIG_CPU_MIPSR6 #ifdefs
Commit be0c37c985 (MIPS: Rearrange PTE bits into fixed positions.)
defines fixed PTE bits for MIPS R2. Then, commit d7b631419b
(MIPS: pgtable-bits: Fix XPA damage to R6 definitions.) adds the MIPS
R6 definitions in the same way as MIPS R2. But some R6 #ifdefs in the
later commit are missing, so in this patch I fix that.

Signed-off-by: Huacai Chen <chenhc@lemote.com>
Cc: Aurelien Jarno <aurelien@aurel32.net>
Cc: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: Fuxin Zhang <zhangfx@lemote.com>
Cc: Zhangjin Wu <wuzhangjin@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: stable@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/12164/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-01-24 01:32:25 +01:00
Huacai Chen db0dbd57d5 MIPS: sync-r4k: reduce skew while synchronization
While synchronization, count register will go backwards for the master.
If synchronise_count_master() runs before synchronise_count_slave(),
skew becomes even more. The skew is very harmful for CPU hotplug (CPU0
do synchronization with CPU1, then CPU0 do synchronization with CPU2
and CPU0's count goes backwards, so it will be out of sync with CPU1).

After the commit cf9bfe55f2 (MIPS: Synchronize MIPS count one
CPU at a time), we needn't evaluate count_reference at the beginning of
synchronise_count_master() any more. Thus, we evaluate the initcount (It
seems like count_reference is redundant) in the 2nd loop. Since we write
the count register in the last loop, we don't need additional barriers
(the existing memory barriers are enough).

Moreover, I think we loop 3 times is enough to get a primed instruction
cache, this can also get less skew than looping 5 times.

Comments are also updated in this patch.

Signed-off-by: Huacai Chen <chenhc@lemote.com>
Cc: Aurelien Jarno <aurelien@aurel32.net>
Cc: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: Fuxin Zhang <zhangfx@lemote.com>
Cc: Zhangjin Wu <wuzhangjin@gmail.com>
Patchwork: https://patchwork.linux-mips.org/patch/12163/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-01-24 01:31:51 +01:00
Linus Torvalds cc673757e2 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull final vfs updates from Al Viro:

 - The ->i_mutex wrappers (with small prereq in lustre)

 - a fix for too early freeing of symlink bodies on shmem (they need to
   be RCU-delayed) (-stable fodder)

 - followup to dedupe stuff merged this cycle

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  vfs: abort dedupe loop if fatal signals are pending
  make sure that freeing shmem fast symlinks is RCU-delayed
  wrappers for ->i_mutex access
  lustre: remove unused declaration
2016-01-23 12:24:56 -08:00
Linus Torvalds 20c759ca98 Merge branch 'akpm' (patches from Andrew)
Merge small final update from Andrew Morton:

 - DAX feature work: add fsync/msync support

 - kfree cleanup, MAINTAINERS update

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  MAINTAINERS: return arch/sh to maintained state, with new maintainers
  tree wide: use kvfree() than conditional kfree()/vfree()
  dax: never rely on bh.b_dev being set by get_block()
  xfs: call dax_pfn_mkwrite() for DAX fsync/msync
  ext4: call dax_pfn_mkwrite() for DAX fsync/msync
  ext2: call dax_pfn_mkwrite() for DAX fsync/msync
  dax: add support for fsync/sync
  mm: add find_get_entries_tag()
  dax: support dirty DAX entries in radix tree
  pmem: add wb_cache_pmem() to the PMEM API
  dax: fix conversion of holes to PMDs
  dax: fix NULL pointer dereference in __dax_dbg()
2016-01-23 11:13:56 -08:00
Linus Torvalds b82dde0230 Another release, another new syscall to wire up.
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Merge tag 'please-pull-copy_file_range' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux

Pull ia64 copy_file_range syscall update from Tony Luck:
 "Another release, another new syscall to wire up"

* tag 'please-pull-copy_file_range' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux:
  [IA64] Enable copy_file_range syscall for ia64
2016-01-22 17:35:38 -08:00
Linus Torvalds 79d245327f ARM: SoC support for Tegra platforms for v4.5
Here's a single-SoC topic branch that we've staged separately. Mainly
 because it was hard to sort the branch contents in a way that fit our
 existing branches due to some refactorings.
 
 The code has been in -next for quite a while, but we staged it in arm-soc
 a bit late, which is why we've kept it separate from the other updates
 and are sending it separately here.
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Merge tag 'armsoc-tegra' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC support for Tegra platforms from Olof Johansson:
 "Here's a single-SoC topic branch that we've staged separately.  Mainly
  because it was hard to sort the branch contents in a way that fit our
  existing branches due to some refactorings.

  The code has been in -next for quite a while, but we staged it in
  arm-soc a bit late, which is why we've kept it separate from the other
  updates and are sending it separately here"

* tag 'armsoc-tegra' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  arm64: tegra: Add NVIDIA Jetson TX1 Developer Kit support
  arm64: tegra: Add NVIDIA P2597 I/O board support
  arm64: tegra: Add NVIDIA Jetson TX1 support
  arm64: tegra: Add NVIDIA P2571 board support
  arm64: tegra: Add NVIDIA P2371 board support
  arm64: tegra: Add NVIDIA P2595 I/O board support
  arm64: tegra: Add NVIDIA P2530 main board support
  arm64: tegra: Add Tegra210 support
  arm64: tegra: Add NVIDIA Tegra132 Norrin support
  arm64: tegra: Add Tegra132 support
  ARM: tegra: select USB_ULPI from EHCI rather than platform
  ARM: tegra: Ensure entire dcache is flushed on entering LP0/1
  amba: Hide TEGRA_AHB symbol
  soc/tegra: Add Tegra210 support
  soc/tegra: Provide per-SoC Kconfig symbols
2016-01-22 17:30:52 -08:00
Linus Torvalds 1b8ee1ec41 ARM: SoC fixes for v4.5 merge window
A few fixes for fallout that we didn't catch in time in -next, or smaller
 warning fixes that have been discovered since.
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Merge tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Olof Johansson:
 "A few fixes for fallout that we didn't catch in time in -next, or
  smaller warning fixes that have been discovered since"

* tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  soc: qcom/spm: shut up uninitialized variable warning
  ARM: realview: fix device tree build
  ARM: debug-ll: fix BCM63xx entry for multiplatform
  ARM: dts: armadillo800eva Correct extal1 frequency to 24 MHz
2016-01-22 17:26:00 -08:00
Tetsuo Handa 1d5cfdb076 tree wide: use kvfree() than conditional kfree()/vfree()
There are many locations that do

  if (memory_was_allocated_by_vmalloc)
    vfree(ptr);
  else
    kfree(ptr);

but kvfree() can handle both kmalloc()ed memory and vmalloc()ed memory
using is_vmalloc_addr().  Unless callers have special reasons, we can
replace this branch with kvfree().  Please check and reply if you found
problems.

Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: Jan Kara <jack@suse.com>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Acked-by: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Acked-by: David Rientjes <rientjes@google.com>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Oleg Drokin <oleg.drokin@intel.com>
Cc: Boris Petkov <bp@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-01-22 17:02:18 -08:00
Ross Zwisler 3f4a2670de pmem: add wb_cache_pmem() to the PMEM API
__arch_wb_cache_pmem() was already an internal implementation detail of
the x86 PMEM API, but this functionality needs to be exported as part of
the general PMEM API to handle the fsync/msync case for DAX mmaps.

One thing worth noting is that we really do want this to be part of the
PMEM API as opposed to a stand-alone function like clflush_cache_range()
because of ordering restrictions.  By having wb_cache_pmem() as part of
the PMEM API we can leave it unordered, call it multiple times to write
back large amounts of memory, and then order the multiple calls with a
single wmb_pmem().

Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: "J. Bruce Fields" <bfields@fieldses.org>
Cc: "Theodore Ts'o" <tytso@mit.edu>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Andreas Dilger <adilger.kernel@dilger.ca>
Cc: Dave Chinner <david@fromorbit.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jan Kara <jack@suse.com>
Cc: Jeff Layton <jlayton@poochiereds.net>
Cc: Matthew Wilcox <willy@linux.intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Matthew Wilcox <matthew.r.wilcox@intel.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-01-22 17:02:18 -08:00
Dan Williams 800dc4f49c Revert "MIPS: Fix PAGE_MASK definition"
This reverts commit 22b1452399.

It was originally sent in an earlier revision of the pfn_t patchset.
Besides being broken, the warning is also fixed by PFN_FLAGS_MASK
casting the PAGE_MASK to an unsigned long.

Reported-by: Manuel Lauss <manuel.lauss@gmail.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Cc: linux-kernel@vger.kernel.org
Cc: Linux-MIPS <linux-mips@linux-mips.org>
Cc: stable@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/12182/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-01-23 00:28:57 +01:00
Al Viro 5955102c99 wrappers for ->i_mutex access
parallel to mutex_{lock,unlock,trylock,is_locked,lock_nested},
inode_foo(inode) being mutex_foo(&inode->i_mutex).

Please, use those for access to ->i_mutex; over the coming cycle
->i_mutex will become rwsem, with ->lookup() done with it held
only shared.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2016-01-22 18:04:28 -05:00
Tony Luck 884a12a597 [IA64] Enable copy_file_range syscall for ia64
New system call added in:
  29732938a6
  vfs: add copy_file_range syscall and vfs helper

Signed-off-by: Tony Luck <tony.luck@intel.com>
2016-01-22 14:20:01 -08:00
Olof Johansson 53c517a837 Renesas ARM Based SoC Fixes for v4.5
Correct extal1 frequency of armadillo800eva board
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Merge tag 'renesas-fixes-for-v4.5' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into fixes

Renesas ARM Based SoC Fixes for v4.5

Correct extal1 frequency of armadillo800eva board

* tag 'renesas-fixes-for-v4.5' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
  ARM: dts: armadillo800eva Correct extal1 frequency to 24 MHz

Signed-off-by: Olof Johansson <olof@lixom.net>
2016-01-22 08:28:23 -08:00
Tony Lindgren 143c6fe3a4 ARM: omap2plus_defconfig: Enable ARM_KERNMEM_PERMS and few loadable modules
With recent omap assembly fixes for CONFIG_DEBUG_RODATA, we can
now use DEBUG_RODATA. Let's enable ARM_KERNMEM_PERMS so that
DEBUG_RODATA gets selected by default. This way we can make sure
any related issues are caught early.

And while testing things on various devices, I noticed we're
missing few loadable modules to make things more usable:

- USB Ethernet for smsc75xx, we only have smsc97xx right now

- Basic USB serial drivers for things like ftdi and pl2303 ports

- Blinking leds with pca963x

Signed-off-by: Tony Lindgren <tony@atomide.com>
2016-01-22 08:26:08 -08:00
Tony Lindgren 4da597d166 ARM: OMAP2+: Fix ppa_zero_params and ppa_por_params for rodata
We don't want to write to .text so let's move ppa_zero_params and
ppa_por_params to .data and access them via pointers.

Note that I have not been able to test as we I don't have a HS
omap4 to test with. The code has been changed in similar way as
for omap3 though.

Cc: Kees Cook <keescook@chromium.org>
Cc: Laura Abbott <labbott@redhat.com>
Cc: Nishanth Menon <nm@ti.com>
Cc: Richard Woodruff <r-woodruff2@ti.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Tero Kristo <t-kristo@ti.com>
Acked-by: Nicolas Pitre <nico@linaro.org>
Cc: stable@vger.kernel.org # v4.0+
Fixes: 1e6b48116a ("ARM: mm: allow non-text sections to be
non-executable")
Signed-off-by: Tony Lindgren <tony@atomide.com>
2016-01-22 08:26:08 -08:00
Tony Lindgren 0a0b132755 ARM: OMAP2+: Fix l2_inv_api_params for rodata
We don't want to write to .text, so let's move l2_inv_api_params
to .data and access it via a pointer.

Cc: Kees Cook <keescook@chromium.org>
Cc: Laura Abbott <labbott@redhat.com>
Cc: Nishanth Menon <nm@ti.com>
Cc: Richard Woodruff <r-woodruff2@ti.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Tero Kristo <t-kristo@ti.com>
Acked-by: Nicolas Pitre <nico@linaro.org>
Cc: stable@vger.kernel.org # v4.0+
Fixes: 1e6b48116a ("ARM: mm: allow non-text sections to be
non-executable")
Signed-off-by: Tony Lindgren <tony@atomide.com>
2016-01-22 08:26:08 -08:00
Tony Lindgren a5311d4d13 ARM: OMAP2+: Fix save_secure_ram_context for rodata
We don't want to write to .text and we can move save_secure_ram_context
into .data as it all gets copied into SRAM anyways.

Cc: Kees Cook <keescook@chromium.org>
Cc: Laura Abbott <labbott@redhat.com>
Cc: Nishanth Menon <nm@ti.com>
Cc: Richard Woodruff <r-woodruff2@ti.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Cc: Tero Kristo <t-kristo@ti.com>
Acked-by: Nicolas Pitre <nico@linaro.org>
Cc: stable@vger.kernel.org # v4.0+
Fixes: 1e6b48116a ("ARM: mm: allow non-text sections to be
non-executable")
Signed-off-by: Tony Lindgren <tony@atomide.com>
2016-01-22 08:26:08 -08:00
Tony Lindgren eeaf9646ac ARM: OMAP2+: Fix l2dis_3630 for rodata
We don't want to write to .text section. Let's move l2dis_3630
to .data and access it via a pointer.

For calculating the offset, let's optimize out the add and do it
in ldr/str as suggested by Nicolas Pitre <nicolas.pitre@linaro.org>.

Cc: Kees Cook <keescook@chromium.org>
Cc: Laura Abbott <labbott@redhat.com>
Cc: Nishanth Menon <nm@ti.com>
Cc: Richard Woodruff <r-woodruff2@ti.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Tero Kristo <t-kristo@ti.com>
Cc: stable@vger.kernel.org # v4.0+
Acked-by: Nicolas Pitre <nico@linaro.org>
Cc: stable@vger.kernel.org # v4.0+
Fixes: 1e6b48116a ("ARM: mm: allow non-text sections to be
non-executable")
Signed-off-by: Tony Lindgren <tony@atomide.com>
2016-01-22 08:26:08 -08:00
Tony Lindgren d9db591033 ARM: OMAP2+: Fix wait_dll_lock_timed for rodata
We don't want to be writing to .text so it can be set rodata.
Fix error "Unable to handle kernel paging request at virtual address
c012396c" in wait_dll_lock_timed if CONFIG_DEBUG_RODATA is selected.

As these counters are for debugging only and unused, we can just
remove them.

Cc: Kees Cook <keescook@chromium.org>
Cc: Laura Abbott <labbott@redhat.com>
Cc: Nishanth Menon <nm@ti.com>
Cc: Richard Woodruff <r-woodruff2@ti.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Tero Kristo <t-kristo@ti.com>
Acked-by: Nicolas Pitre <nico@linaro.org>
Cc: stable@vger.kernel.org # v4.0+
Fixes: 1e6b48116a ("ARM: mm: allow non-text sections to be
non-executable")
Signed-off-by: Tony Lindgren <tony@atomide.com>
2016-01-22 08:26:08 -08:00
Huacai Chen 5610b1254e MIPS: hpet: Choose a safe value for the ETIME check
This patch is borrowed from x86 hpet driver and explaind below:

Due to the overly intelligent design of HPETs, we need to workaround
the problem that the compare value which we write is already behind
the actual counter value at the point where the value hits the real
compare register. This happens for two reasons:

1) We read out the counter, add the delta and write the result to the
   compare register. When a NMI hits between the read out and the write
   then the counter can be ahead of the event already.

2) The write to the compare register is delayed by up to two HPET
   cycles in AMD chipsets.

We can work around this by reading back the compare register to make
sure that the written value has hit the hardware. But that is bad
performance wise for the normal case where the event is far enough in
the future.

As we already know that the write can be delayed by up to two cycles
we can avoid the read back of the compare register completely if we
make the decision whether the delta has elapsed already or not based
on the following calculation:

  cmp = event - actual_count;

If cmp is less than 64 HPET clock cycles, then we decide that the event
has happened already and return -ETIME. That covers the above #1 and #2
problems which would cause a wait for HPET wraparound (~306 seconds).

Signed-off-by: Huacai Chen <chenhc@lemote.com>
Cc: Aurelien Jarno <aurelien@aurel32.net>
Cc: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: Fuxin Zhang <zhangfx@lemote.com>
Cc: Zhangjin Wu <wuzhangjin@gmail.com>
Cc: Huacai Chen <chenhc@lemote.com>
Cc: linux-mips@linux-mips.org
Cc: stable@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/12162/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-01-22 02:00:49 +01:00
Huacai Chen 5754843225 MIPS: Loongson-3: Fix SMP_ASK_C0COUNT IPI handler
When Core-0 handle SMP_ASK_C0COUNT IPI, we should make other cores to
see the result as soon as possible (especially when Store-Fill-Buffer
is enabled). Otherwise, C0_Count syncronization makes no sense.

BTW, array is more suitable than per-cpu variable for syncronization,
and there is a corner case should be avoid: C0_Count of Core-0 can be
really 0.

Signed-off-by: Huacai Chen <chenhc@lemote.com>
Cc: Aurelien Jarno <aurelien@aurel32.net>
Cc: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: Fuxin Zhang <zhangfx@lemote.com>
Cc: Zhangjin Wu <wuzhangjin@gmail.com>
Cc: Huacai Chen <chenhc@lemote.com>
Cc: linux-mips@linux-mips.org
Cc: <stable@vger.kernel.org>
Patchwork: https://patchwork.linux-mips.org/patch/12160/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-01-22 01:59:57 +01:00
Huacai Chen 5188129b8c MIPS: Loongson-3: Improve -march option and move it to Platform
If GCC >= 4.9 and Binutils >=2.25, we use -march=loongson3a, otherwise
we use -march=mips64r2, this can slightly improve performance. Besides,
arch/mips/loongson64/Platform is a better location rather than arch/
mips/Makefile.

Signed-off-by: Huacai Chen <chenhc@lemote.com>
Cc: Aurelien Jarno <aurelien@aurel32.net>
Cc: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: Fuxin Zhang <zhangfx@lemote.com>
Cc: Zhangjin Wu <wuzhangjin@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/12161/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-01-22 01:59:18 +01:00
Huacai Chen 6e52684467 MIPS: Cleanup the unused __arch_local_irq_restore() function
In history, __arch_local_irq_restore() is only used by SMTC. However,
SMTC support has been removed since 3.16, this patch remove the unused
function.

Signed-off-by: Huacai Chen <chenhc@lemote.com>
Cc: Aurelien Jarno <aurelien@aurel32.net>
Cc: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: Fuxin Zhang <zhangfx@lemote.com>
Cc: Zhangjin Wu <wuzhangjin@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/12159/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-01-22 01:58:49 +01:00
Suman Anna 4850d43143 ARM: OMAP2+: Remove legacy mailbox device instantiation
The legacy-style mailbox device creation is supported currently
only for OMAP3, as all other SoCs are DT-boot only. Even on this
SoC, there are no client drivers that utilize these mailbox devices.
So, clean up the legacy-style mailbox device instantiation logic.
The mailbox devices are already present and supported for the DT
boot on OMAP3.

Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2016-01-21 13:57:24 -08:00
Keerthy cf19f3ab89 ARM: dts: AM4372: Add ti,mbox-send-noirq to wkup_m3 mailbox
Add ti,mbox-send-noirq to wkup_m3 mailbox so that messages using
wkup_m3 mailbox are sent without triggering any further interrupts.
This is required to be able to send multiple messages to the WkupM3
after the mailbox usage logic adjustment in the wkup_m3_ipc driver.

Signed-off-by: Keerthy <j-keerthy@ti.com>
Acked-by: Dave Gerlach <d-gerlach@ti.com>
[s-anna@ti.com: revise commit description]
Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2016-01-21 13:54:27 -08:00
Dave Gerlach 2800971f73 ARM: dts: AM33xx: Add ti,mbox-send-noirq to wkup_m3 mailbox
Add ti,mbox-send-noirq to wkup_m3 mailbox so that messages using
wkup_m3 mailbox are sent without triggering any further interrupts.
This is needed to achieve lower power numbers during CPU idle on
AM33xx.

Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
[s-anna@ti.com: revise commit description]
Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2016-01-21 13:53:58 -08:00
Linus Torvalds 404a47410c Merge branch 'uaccess' (batched user access infrastructure)
Expose an interface to allow users to mark several accesses together as
being user space accesses, allowing batching of the surrounding user
space access markers (SMAP on x86, PAN on arm64, domain register
switching on arm).

This is currently only used for the user string lenth and copying
functions, where the SMAP overhead on x86 drowned the actual user
accesses (only noticeable on newer microarchitectures that support SMAP
in the first place, of course).

* user access batching branch:
  Use the new batched user accesses in generic user string handling
  Add 'unsafe' user access functions for batched accesses
  x86: reorganize SMAP handling in user space accesses
2016-01-21 13:02:41 -08:00
Linus Torvalds eae21770b4 Merge branch 'akpm' (patches from Andrew)
Merge third patch-bomb from Andrew Morton:
 "I'm pretty much done for -rc1 now:

   - the rest of MM, basically

   - lib/ updates

   - checkpatch, epoll, hfs, fatfs, ptrace, coredump, exit

   - cpu_mask simplifications

   - kexec, rapidio, MAINTAINERS etc, etc.

   - more dma-mapping cleanups/simplifications from hch"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (109 commits)
  MAINTAINERS: add/fix git URLs for various subsystems
  mm: memcontrol: add "sock" to cgroup2 memory.stat
  mm: memcontrol: basic memory statistics in cgroup2 memory controller
  mm: memcontrol: do not uncharge old page in page cache replacement
  Documentation: cgroup: add memory.swap.{current,max} description
  mm: free swap cache aggressively if memcg swap is full
  mm: vmscan: do not scan anon pages if memcg swap limit is hit
  swap.h: move memcg related stuff to the end of the file
  mm: memcontrol: replace mem_cgroup_lruvec_online with mem_cgroup_online
  mm: vmscan: pass memcg to get_scan_count()
  mm: memcontrol: charge swap to cgroup2
  mm: memcontrol: clean up alloc, online, offline, free functions
  mm: memcontrol: flatten struct cg_proto
  mm: memcontrol: rein in the CONFIG space madness
  net: drop tcp_memcontrol.c
  mm: memcontrol: introduce CONFIG_MEMCG_LEGACY_KMEM
  mm: memcontrol: allow to disable kmem accounting for cgroup2
  mm: memcontrol: account "kmem" consumers in cgroup2 memory controller
  mm: memcontrol: move kmem accounting code to CONFIG_MEMCG
  mm: memcontrol: separate kmem code from legacy tcp accounting code
  ...
2016-01-21 12:32:08 -08:00
yankejian 48189d6aaf net: hns: enet specifies a reference to dsaf
This patch replace the assoication between dsaf and enet from string
matching to object reference. It requires the DTS to be updated within
BIOS. Thanks god it can be done for all released boards.

Signed-off-by: Kejian Yan <yankejian@huawei.com>
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Yisen Zhuang <yisen.zhuang@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-01-21 12:02:31 -08:00
Linus Torvalds d43421565b PCI changes for the v4.5 merge window:
Enumeration
     Simplify config space size computation (Bjorn Helgaas)
     Avoid iterating through ROM outside the resource window (Edward O'Callaghan)
     Support PCIe devices with short cfg_size (Jason S. McMullan)
     Add Netronome vendor and device IDs (Jason S. McMullan)
     Limit config space size for Netronome NFP6000 family (Jason S. McMullan)
     Add Netronome NFP4000 PF device ID (Simon Horman)
     Limit config space size for Netronome NFP4000 (Simon Horman)
     Print warnings for all invalid expansion ROM headers (Vladis Dronov)
 
   Resource management
     Fix minimum allocation address overwrite (Christoph Biedl)
 
   PCI device hotplug
     acpiphp_ibm: Fix null dereferences on null ibm_slot (Colin Ian King)
     pciehp: Always protect pciehp_disable_slot() with hotplug mutex (Guenter Roeck)
     shpchp: Constify hpc_ops structure (Julia Lawall)
     ibmphp: Remove unneeded NULL test (Julia Lawall)
 
   Power management
     Make ASPM sysfs link_state_store() consistent with link_state_show() (Andy Lutomirski)
 
   Virtualization
     Add function 1 DMA alias quirk for Lite-On/Plextor M6e/Marvell 88SS9183 (Tim Sander)
 
   MSI
     Remove empty pci_msi_init_pci_dev() (Bjorn Helgaas)
     Mark PCIe/PCI (MSI) IRQ cascade handlers as IRQF_NO_THREAD (Grygorii Strashko)
     Initialize MSI capability for all architectures (Guilherme G. Piccoli)
     Relax msi_domain_alloc() to support parentless MSI irqdomains (Liu Jiang)
 
   ARM Versatile host bridge driver
     Remove unused pci_sys_data structures (Lorenzo Pieralisi)
 
   Broadcom iProc host bridge driver
     Hide CONFIG_PCIE_IPROC (Arnd Bergmann)
     Do not use 0x in front of %pap (Dmitry V. Krivenok)
     Update iProc PCIe device tree binding (Ray Jui)
     Add PAXC interface support (Ray Jui)
     Add iProc PCIe MSI device tree binding (Ray Jui)
     Add iProc PCIe MSI support (Ray Jui)
 
   Freescale i.MX6 host bridge driver
     Use gpio_set_value_cansleep() (Fabio Estevam)
     Add support for active-low reset GPIO (Petr Štetiar)
 
   HiSilicon host bridge driver
     Add support for HiSilicon Hip06 PCIe host controllers (Gabriele Paoloni)
 
   Intel VMD host bridge driver
     Export irq_domain_set_info() for module use (Keith Busch)
     x86/PCI: Allow DMA ops specific to a PCI domain (Keith Busch)
     Use 32 bit PCI domain numbers (Keith Busch)
     Add driver for Intel Volume Management Device (VMD) (Keith Busch)
 
   Qualcomm host bridge driver
     Document PCIe devicetree bindings (Stanimir Varbanov)
     Add Qualcomm PCIe controller driver (Stanimir Varbanov)
     dts: apq8064: add PCIe devicetree node (Stanimir Varbanov)
     dts: ifc6410: enable PCIe DT node for this board (Stanimir Varbanov)
 
   Renesas R-Car host bridge driver
     Add support for R-Car H3 to pcie-rcar (Harunobu Kurokawa)
     Allow DT to override default window settings (Phil Edworthy)
     Convert to DT resource parsing API (Phil Edworthy)
     Revert "PCI: rcar: Build pcie-rcar.c only on ARM" (Phil Edworthy)
     Remove unused pci_sys_data struct from pcie-rcar (Phil Edworthy)
     Add runtime PM support to pcie-rcar (Phil Edworthy)
     Add Gen2 PHY setup to pcie-rcar (Phil Edworthy)
     Add gen2 fallback compatibility string for pci-rcar-gen2 (Simon Horman)
     Add gen2 fallback compatibility string for pcie-rcar (Simon Horman)
 
   Synopsys DesignWare host bridge driver
     Simplify control flow (Bjorn Helgaas)
     Make config accessor override checking symmetric (Bjorn Helgaas)
     Ensure ATU is enabled before IO/conf space accesses (Stanimir Varbanov)
 
   Miscellaneous
     Add of_pci_get_host_bridge_resources() stub (Arnd Bergmann)
     Check for PCI_HEADER_TYPE_BRIDGE equality, not bitmask (Bjorn Helgaas)
     Fix all whitespace issues (Bogicevic Sasa)
     x86/PCI: Simplify pci_bios_{read,write} (Geliang Tang)
     Use to_pci_dev() instead of open-coding it (Geliang Tang)
     Use kobj_to_dev() instead of open-coding it (Geliang Tang)
     Use list_for_each_entry() to simplify code (Geliang Tang)
     Fix typos in <linux/msi.h> (Thomas Petazzoni)
     x86/PCI: Clarify AMD Fam10h config access restrictions comment (Tomasz Nowicki)
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Merge tag 'pci-v4.5-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI updates from Bjorn Helgaas:
 "PCI changes for the v4.5 merge window:

  Enumeration:
   - Simplify config space size computation (Bjorn Helgaas)
   - Avoid iterating through ROM outside the resource window (Edward O'Callaghan)
   - Support PCIe devices with short cfg_size (Jason S. McMullan)
   - Add Netronome vendor and device IDs (Jason S. McMullan)
   - Limit config space size for Netronome NFP6000 family (Jason S. McMullan)
   - Add Netronome NFP4000 PF device ID (Simon Horman)
   - Limit config space size for Netronome NFP4000 (Simon Horman)
   - Print warnings for all invalid expansion ROM headers (Vladis Dronov)

  Resource management:
   - Fix minimum allocation address overwrite (Christoph Biedl)

  PCI device hotplug:
   - acpiphp_ibm: Fix null dereferences on null ibm_slot (Colin Ian King)
   - pciehp: Always protect pciehp_disable_slot() with hotplug mutex (Guenter Roeck)
   - shpchp: Constify hpc_ops structure (Julia Lawall)
   - ibmphp: Remove unneeded NULL test (Julia Lawall)

  Power management:
   - Make ASPM sysfs link_state_store() consistent with link_state_show() (Andy Lutomirski)

  Virtualization
   - Add function 1 DMA alias quirk for Lite-On/Plextor M6e/Marvell 88SS9183 (Tim Sander)

  MSI:
   - Remove empty pci_msi_init_pci_dev() (Bjorn Helgaas)
   - Mark PCIe/PCI (MSI) IRQ cascade handlers as IRQF_NO_THREAD (Grygorii Strashko)
   - Initialize MSI capability for all architectures (Guilherme G. Piccoli)
   - Relax msi_domain_alloc() to support parentless MSI irqdomains (Liu Jiang)

  ARM Versatile host bridge driver:
   - Remove unused pci_sys_data structures (Lorenzo Pieralisi)

  Broadcom iProc host bridge driver:
   - Hide CONFIG_PCIE_IPROC (Arnd Bergmann)
   - Do not use 0x in front of %pap (Dmitry V. Krivenok)
   - Update iProc PCIe device tree binding (Ray Jui)
   - Add PAXC interface support (Ray Jui)
   - Add iProc PCIe MSI device tree binding (Ray Jui)
   - Add iProc PCIe MSI support (Ray Jui)

  Freescale i.MX6 host bridge driver:
   - Use gpio_set_value_cansleep() (Fabio Estevam)
   - Add support for active-low reset GPIO (Petr Štetiar)

  HiSilicon host bridge driver:
   - Add support for HiSilicon Hip06 PCIe host controllers (Gabriele Paoloni)

  Intel VMD host bridge driver:
   - Export irq_domain_set_info() for module use (Keith Busch)
   - x86/PCI: Allow DMA ops specific to a PCI domain (Keith Busch)
   - Use 32 bit PCI domain numbers (Keith Busch)
   - Add driver for Intel Volume Management Device (VMD) (Keith Busch)

  Qualcomm host bridge driver:
   - Document PCIe devicetree bindings (Stanimir Varbanov)
   - Add Qualcomm PCIe controller driver (Stanimir Varbanov)
   - dts: apq8064: add PCIe devicetree node (Stanimir Varbanov)
   - dts: ifc6410: enable PCIe DT node for this board (Stanimir Varbanov)

  Renesas R-Car host bridge driver:
   - Add support for R-Car H3 to pcie-rcar (Harunobu Kurokawa)
   - Allow DT to override default window settings (Phil Edworthy)
   - Convert to DT resource parsing API (Phil Edworthy)
   - Revert "PCI: rcar: Build pcie-rcar.c only on ARM" (Phil Edworthy)
   - Remove unused pci_sys_data struct from pcie-rcar (Phil Edworthy)
   - Add runtime PM support to pcie-rcar (Phil Edworthy)
   - Add Gen2 PHY setup to pcie-rcar (Phil Edworthy)
   - Add gen2 fallback compatibility string for pci-rcar-gen2 (Simon Horman)
   - Add gen2 fallback compatibility string for pcie-rcar (Simon Horman)

  Synopsys DesignWare host bridge driver:
   - Simplify control flow (Bjorn Helgaas)
   - Make config accessor override checking symmetric (Bjorn Helgaas)
   - Ensure ATU is enabled before IO/conf space accesses (Stanimir Varbanov)

  Miscellaneous:
   - Add of_pci_get_host_bridge_resources() stub (Arnd Bergmann)
   - Check for PCI_HEADER_TYPE_BRIDGE equality, not bitmask (Bjorn Helgaas)
   - Fix all whitespace issues (Bogicevic Sasa)
   - x86/PCI: Simplify pci_bios_{read,write} (Geliang Tang)
   - Use to_pci_dev() instead of open-coding it (Geliang Tang)
   - Use kobj_to_dev() instead of open-coding it (Geliang Tang)
   - Use list_for_each_entry() to simplify code (Geliang Tang)
   - Fix typos in <linux/msi.h> (Thomas Petazzoni)
   - x86/PCI: Clarify AMD Fam10h config access restrictions comment (Tomasz Nowicki)"

* tag 'pci-v4.5-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (58 commits)
  PCI: Add function 1 DMA alias quirk for Lite-On/Plextor M6e/Marvell 88SS9183
  PCI: Limit config space size for Netronome NFP4000
  PCI: Add Netronome NFP4000 PF device ID
  x86/PCI: Add driver for Intel Volume Management Device (VMD)
  PCI/AER: Use 32 bit PCI domain numbers
  x86/PCI: Allow DMA ops specific to a PCI domain
  irqdomain: Export irq_domain_set_info() for module use
  PCI: host: Add of_pci_get_host_bridge_resources() stub
  genirq/MSI: Relax msi_domain_alloc() to support parentless MSI irqdomains
  PCI: rcar: Add Gen2 PHY setup to pcie-rcar
  PCI: rcar: Add runtime PM support to pcie-rcar
  PCI: designware: Make config accessor override checking symmetric
  PCI: ibmphp: Remove unneeded NULL test
  ARM: dts: ifc6410: enable PCIe DT node for this board
  ARM: dts: apq8064: add PCIe devicetree node
  PCI: hotplug: Use list_for_each_entry() to simplify code
  PCI: rcar: Remove unused pci_sys_data struct from pcie-rcar
  PCI: hisi: Add support for HiSilicon Hip06 PCIe host controllers
  PCI: Avoid iterating through memory outside the resource window
  PCI: acpiphp_ibm: Fix null dereferences on null ibm_slot
  ...
2016-01-21 11:52:16 -08:00
Linus Torvalds 96461fdb3a CRIS changes for 4.5
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Merge tag 'cris-for-4.5' of git://git.kernel.org/pub/scm/linux/kernel/git/jesper/cris

Pull CRIS updates from Jesper Nilsson:
 "Just some fixups for section mismatches from Guenter"

* tag 'cris-for-4.5' of git://git.kernel.org/pub/scm/linux/kernel/git/jesper/cris:
  cris: Fix section mismatches in architecture startup code
  cris: debugport: Fix section mismatches
2016-01-21 11:33:36 -08:00
Linus Torvalds 278e5acae1 Add KGDB support.
zImage fix.
 various cleanup
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Merge tag 'for-4.5' of git://git.osdn.jp/gitroot/uclinux-h8/linux

Pull h8300 updates from Yoshinori Sato:
 - Add KGDB support
 - zImage fix
 - various cleanup

* tag 'for-4.5' of git://git.osdn.jp/gitroot/uclinux-h8/linux:
  h8300: System call entry enable interrupt.
  h8300: show_stack cleanup
  h8300: Restraint of warning.
  h8300: Add KGDB support.
  irqchip: renesas-h8s: Replace ctrl_outw/ctrl_inw with writew/readw
  h8300: signal stack fix
  h8300: Add LZO compression
  h8300: zImage alignment fix
  clk: h8300: Remove "sh73a0-" part from compatible value
  h8300: zImage alignment fix
2016-01-21 11:27:34 -08:00
Stephane Eranian 0e1eb0a1f5 perf/x86: add Intel SkyLake uncore IMC PMU support
This patch enables the uncore_imc PMU for Intel
SkyLake Desktop processors (Core i7-6700, model 94).

It is possible to compute memory read/write bandwidth
using:

  $ perf stat -a -e uncore_imc/data_reads/,uncore_imc/data_writes/ ....

Signed-off-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Cc: kan.liang@intel.com
Link: http://lkml.kernel.org/r/1452151546-8853-1-git-send-email-eranian@google.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-01-21 18:54:26 +01:00
Linus Walleij 6551b8c9b7 ARM: realview: fix device tree build
As it happens, two obj-$(CONFIG_FOO) += foo.o variables are
above obj-y := core.o, which doesn't work: the += directives
need to add something to the build and doesn't work if obj-y
is not set first, so move the obj-y to be on top and everything
builds nicely again.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2016-01-21 13:16:17 +01:00
Andy Shevchenko 22c43f36b5 x86/platform/quark: Print boundaries correctly
When we print values, such as @size, we have to understand that
it's derived from [begin .. end] as:

	size = end - begin + 1

On the opposite the @end is derived from the rest as:

	end = begin + size - 1

Correct the IMR code to print values correctly.

Note that @__end_rodata actually points to the next address
after the aligned .rodata section.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Ong, Boon Leong <boon.leong.ong@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1453320821-64328-1-git-send-email-andriy.shevchenko@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-01-21 08:40:26 +01:00
Stephen Rothwell 0e2bce7411 powerpc: Remove newly added extra definition of pmd_dirty
Commit d5d6a443b2 ("arch/powerpc/include/asm/pgtable-ppc64.h:
add pmd_[dirty|mkclean] for THP") added a new identical definition
of pmd_dirty(). Remove it again.

Cc: Minchan Kim <minchan@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-01-21 14:12:54 +11:00
Alan Modra c153693d7e powerpc: Simplify module TOC handling
PowerPC64 uses the symbol .TOC. much as other targets use
_GLOBAL_OFFSET_TABLE_. It identifies the value of the GOT pointer (or in
powerpc parlance, the TOC pointer). Global offset tables are generally
local to an executable or shared library, or in the kernel, module. Thus
it does not make sense for a module to resolve a relocation against
.TOC. to the kernel's .TOC. value. A module has its own .TOC., and
indeed the powerpc64 module relocation processing ignores the kernel
value of .TOC. and instead calculates a module-local value.

This patch removes code involved in exporting the kernel .TOC., tweaks
modpost to ignore an undefined .TOC., and the module loader to twiddle
the section symbol so that .TOC. isn't seen as undefined.

Note that if the kernel was compiled with -msingle-pic-base then ELFv2
would not have function global entry code setting up r2. In that case
the module call stubs would need to be modified to set up r2 using the
kernel .TOC. value, requiring some of this code to be reinstated.

mpe: Furthermore a change in binutils master (not yet released) causes
the current way we handle the TOC to no longer work when building with
MODVERSIONS=y and RELOCATABLE=n. The symptom is that modules can not be
loaded due to there being no version found for TOC.

Cc: stable@vger.kernel.org # 3.16+
Signed-off-by: Alan Modra <amodra@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-01-21 14:10:56 +11:00
Chandan Rajendra d7f9ee60a6 powerpc: Wire up copy_file_range() syscall
Test runs on a ppc64 BE guest succeeded using modified fstests.

Also tested on ppc64 LE using a home made test - mpe.

Signed-off-by: Chandan Rajendra <chandan@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-01-21 14:10:55 +11:00
Linus Torvalds 30f05309bd More power management and ACPI updates for v4.5-rc1
- Modify the driver core and the USB subsystem to allow USB devices
    to stay suspended over system suspend/resume cycles if they have
    been runtime-suspended already beforehand and fix some bugs on
    top of these changes (Tomeu Vizoso, Rafael Wysocki).
 
  - Update ACPICA to upstream revision 20160108, including updates
    of the ACPICA's copyright notices, a code fixup resulting from
    a regression fix that was necessary in the upstream code only
    (the regression fixed by it has never been present in Linux)
    and a compiler warning fix (Bob Moore, Lv Zheng).
 
  - Fix a recent regression in the cpuidle menu governor that broke
    it on practically all architectures other than x86 and make a
    couple of optimizations on top of that fix (Rafael Wysocki).
 
  - Clean up the selection of cpuidle governors depending on whether
    or not the kernel is configured for tickless systems (Jean Delvare).
 
  - Revert a recent commit that introduced a regression in the ACPI
    backlight driver, address the problem it attempted to fix in a
    different way and revert one more cosmetic change depending on
    the problematic commit (Hans de Goede).
 
  - Add two more ACPI backlight quirks (Hans de Goede).
 
  - Fix a few minor problems in the core devfreq code, clean it up
    a bit and update the MAINTAINERS information related to it
    (Chanwoo Choi, MyungJoo Ham).
 
  - Improve an error message in the ACPI fan driver (Andy Lutomirski).
 
  - Fix a recent build regression in the cpupower tool (Shreyas Prabhu).
 
 /
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Merge tag 'pm+acpi-4.5-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull more power management and ACPI updates from Rafael Wysocki:
 "This includes fixes on top of the previous batch of PM+ACPI updates
  and some new material as well.

  From the new material perspective the most significant are the driver
  core changes that should allow USB devices to stay suspended over
  system suspend/resume cycles if they have been runtime-suspended
  already beforehand.  Apart from that, ACPICA is updated to upstream
  revision 20160108 (cosmetic mostly, but including one fixup on top of
  the previous ACPICA update) and there are some devfreq updates the
  didn't make it before (due to timing).

  A few recent regressions are fixed, most importantly in the cpuidle
  menu governor and in the ACPI backlight driver and some x86 platform
  drivers depending on it.

  Some more bugs are fixed and cleanups are made on top of that.

  Specifics:

   - Modify the driver core and the USB subsystem to allow USB devices
     to stay suspended over system suspend/resume cycles if they have
     been runtime-suspended already beforehand and fix some bugs on top
     of these changes (Tomeu Vizoso, Rafael Wysocki).

   - Update ACPICA to upstream revision 20160108, including updates of
     the ACPICA's copyright notices, a code fixup resulting from a
     regression fix that was necessary in the upstream code only (the
     regression fixed by it has never been present in Linux) and a
     compiler warning fix (Bob Moore, Lv Zheng).

   - Fix a recent regression in the cpuidle menu governor that broke it
     on practically all architectures other than x86 and make a couple
     of optimizations on top of that fix (Rafael Wysocki).

   - Clean up the selection of cpuidle governors depending on whether or
     not the kernel is configured for tickless systems (Jean Delvare).

   - Revert a recent commit that introduced a regression in the ACPI
     backlight driver, address the problem it attempted to fix in a
     different way and revert one more cosmetic change depending on the
     problematic commit (Hans de Goede).

   - Add two more ACPI backlight quirks (Hans de Goede).

   - Fix a few minor problems in the core devfreq code, clean it up a
     bit and update the MAINTAINERS information related to it (Chanwoo
     Choi, MyungJoo Ham).

   - Improve an error message in the ACPI fan driver (Andy Lutomirski).

   - Fix a recent build regression in the cpupower tool (Shreyas
     Prabhu)"

* tag 'pm+acpi-4.5-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (32 commits)
  cpuidle: menu: Avoid pointless checks in menu_select()
  sched / idle: Drop default_idle_call() fallback from call_cpuidle()
  cpupower: Fix build error in cpufreq-info
  cpuidle: Don't enable all governors by default
  cpuidle: Default to ladder governor on ticking systems
  time: nohz: Expose tick_nohz_enabled
  ACPICA: Update version to 20160108
  ACPICA: Silence a -Wbad-function-cast warning when acpi_uintptr_t is 'uintptr_t'
  ACPICA: Additional 2016 copyright changes
  ACPICA: Reduce regression fix divergence from upstream ACPICA
  ACPI / video: Add disable_backlight_sysfs_if quirk for the Toshiba Satellite R830
  ACPI / video: Revert "thinkpad_acpi: Use acpi_video_handles_brightness_key_presses()"
  ACPI / video: Document acpi_video_handles_brightness_key_presses() a bit
  ACPI / video: Fix using an uninitialized mutex / list_head in acpi_video_handles_brightness_key_presses()
  ACPI / video: Revert "ACPI / video: driver must be registered before checking for keypresses"
  ACPI / fan: Improve acpi_device_update_power error message
  ACPI / video: Add disable_backlight_sysfs_if quirk for the Toshiba Portege R700
  cpuidle: menu: Fix menu_select() for CPUIDLE_DRIVER_STATE_START == 0
  MAINTAINERS: Add devfreq-event entry
  MAINTAINERS: Add missing git repository and directory for devfreq
  ...
2016-01-20 19:06:49 -08:00
Linus Torvalds 9638685e32 ARM: SoC driver updates for v4.5
Driver updates for ARM SoCs. Some for SoC-family code under drivers/soc,
 but also some other driver updates that don't belong anywhere else. We also
 bring in the drivers/reset code through arm-soc.
 
 Some of the larger updates:
 
 - Qualcomm support for SMEM, SMSM, SMP2P. All used to communicate with other
   parts of the chip/board on these platforms, all proprietary protocols that
   don't fit into other subsystems and live in drivers/soc for now.
 
 - System bus driver for UniPhier
 - Driver for the TI Wakeup M3 IPC device
 
 - Power management for Raspberry PI
 
 + Again a bunch of other smaller updates and patches.
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Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC driver updates from Olof Johansson:
 "Driver updates for ARM SoCs.  Some for SoC-family code under
  drivers/soc, but also some other driver updates that don't belong
  anywhere else.  We also bring in the drivers/reset code through
  arm-soc.

  Some of the larger updates:

   - Qualcomm support for SMEM, SMSM, SMP2P.  All used to communicate
     with other parts of the chip/board on these platforms, all
     proprietary protocols that don't fit into other subsystems and live
     in drivers/soc for now.

   - System bus driver for UniPhier

   - Driver for the TI Wakeup M3 IPC device

   - Power management for Raspberry PI

  + Again a bunch of other smaller updates and patches"

* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (38 commits)
  bus: uniphier: allow only built-in driver
  ARM: bcm2835: clarify RASPBERRYPI_FIRMWARE dependency
  MAINTAINERS: Drop Kumar Gala from QCOM
  bus: uniphier-system-bus: add UniPhier System Bus driver
  ARM: bcm2835: add rpi power domain driver
  dt-bindings: add rpi power domain driver bindings
  ARM: bcm2835: Define two new packets from the latest firmware.
  drivers/soc: make mediatek/mtk-scpsys.c explicitly non-modular
  soc: mediatek: SCPSYS: Add regulator support
  MAINTAINERS: Change QCOM entries
  soc: qcom: smd-rpm: Add existing platform support
  memory/tegra: Add number of TLB lines for Tegra124
  reset: hi6220: fix modular build
  soc: qcom: Introduce WCNSS_CTRL SMD client
  ARM: qcom: select ARM_CPU_SUSPEND for power management
  MAINTAINERS: Add rules for Qualcomm dts files
  soc: qcom: enable smsm/smp2p modular build
  serial: msm_serial: Make config tristate
  soc: qcom: smp2p: Qualcomm Shared Memory Point to Point
  soc: qcom: smsm: Add driver for Qualcomm SMSM
  ...
2016-01-20 18:42:30 -08:00
Linus Torvalds 03d7d12415 ARM: 64-bit defconfig updates for v4.5
As mentioned earlier, we usually bake this into the general "arm64" branch,
 but this release we have partitioned up the updates a bit more.
 
 Most of these updates are enabling new SoCs in the single defconfig for 64-bit,
 Renesas R8A7795, a number of Tegra options, Socionext Uniphier and a handful
 of new options for other platforms as well.
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Merge tag 'armsoc-defconfig64' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM 64-bit defconfig updates from Olof Johansson:
 "As mentioned earlier, we usually bake this into the general "arm64"
  branch, but this release we have partitioned up the updates a bit
  more.

  Most of these updates are enabling new SoCs in the single defconfig
  for 64-bit, Renesas R8A7795, a number of Tegra options, Socionext
  Uniphier and a handful of new options for other platforms as well"

* tag 'armsoc-defconfig64' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  arm64: mediatek: enable MTK_TIMER
  arm64: defconfig: add CS2000 support
  arm64: defconfig: Add Renesas R-Car SATA driver for R-Car Gen3 SoCs
  arm64: defconfig: enable UniPhier SoCs support
  arm64: add Kconfig entry for Socionext UniPhier SoC family
  arm64: defconfig: add Renesas sound and AK4613 support
  arm64: defconfig: add Renesas R-Car DMAC driver support
  arm64: defconfig: Enable Renesas R-Car I2C Controller
  arm64: defconfig: enable EthernetAVB
  arm64: defconfig: Enable GPIO of Renesas R-Car Gen3 SoC
  arm64: berlin: add the pinctrl dependency for Marvell Berlin SoCs
  arm64: defconfig: renesas: Enable Renesas r8a7795 SoC
  arm64: defconfig: Enable printk timestamps
  arm64: defconfig: Enable squashfs support
  arm64: defconfig: Enable sdhci-tegra driver
  arm64: defconfig: Enable serial-tegra driver
  arm64: defconfig: Enable tegra-apbdma driver
  arm64: defconfig: Do not disable Tegra AHB driver
  arm64: defconfig: Enable Tegra210 support
2016-01-20 18:35:00 -08:00
Linus Torvalds f9cd69fe5e ARM: SoC defconfig updates for v4.5
As usual, a bunch of commits, mostly adding drivers and other options to
 defconfigs because it makes sense to have them enabled on various development
 or product boards. Too much to enumerate each here.
 
 There's an introduction of a pxa_defconfig, since PXA finally will allow
 building a shared kernel for all boards. With this, we can hopefully
 remove a bunch of individual defconfigs down the road but it requires
 a bit of real life testing and transition period.
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Merge tag 'armsoc-defconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC defconfig updates from Olof Johansson:
 "As usual, a bunch of commits, mostly adding drivers and other options
  to defconfigs because it makes sense to have them enabled on various
  development or product boards.  Too much to enumerate each here.

  There's an introduction of a pxa_defconfig, since PXA finally will
  allow building a shared kernel for all boards.  With this, we can
  hopefully remove a bunch of individual defconfigs down the road but it
  requires a bit of real life testing and transition period"

* tag 'armsoc-defconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (65 commits)
  ARM: Add CONFIG_DEPRECATED_PARAM_STRUCT to netwinder_defconfig
  ARM: multi_v7_defconfig: Add rockchip audio support
  arm: multi_v7_defconfig: Add virtio drivers
  ARM: zx_defconfig: remove CONFIG_MMC_DW_IDMAC
  ARM: versatile: enable the right LEDs
  ARM: pxa: add defconfig covering all the boards
  ARM: versatile: select some defaults in defconfig
  ARM: multi_v7_defconfig: Enable fan, sensors and audio for Odroid XU3
  ARM: bcm2835: enable auxiliary spi driver in defconfig
  ARM: bcm2835: enable all bcm2835-relevant in defconfig
  ARM: default to multi_v7_defconfig
  ARM: multi_v7_defconfig: enable rk808 clkout module
  ARM: multi_v7_defconfig: enable rockchip crypto module
  ARM: multi_v7_defconfig: enable Rockchip io-domain driver
  ARM: multi_v7_defconfig: Enable generic SoC internal OMAP regulators
  ARM: multi_v7_defconfig: Enable AM437x PMIC TPS65218
  ARM: multi_v7_defconfig: enable TPS65217 regulator
  ARM: realview: select apropriate targets
  ARM: defconfig: qcom: Enable SSBI drivers
  ARM: defconfig: Update qcom_defconfig
  ...
2016-01-20 18:29:13 -08:00
Linus Torvalds 62c79bb3a9 ARM: 64-bit DT updates for v4.5
This is the first release where we split up the 64-bit contributions a
 bit more, and in particular we are having a separate DT branch for them.
 
 Contents:
 
 - New devices added to Broadcom NorthStar2
 - Misc fixes for Exynos7 boards
 - QCOM updates for MSM8916
 - Rockchip tweaks for rk3368 SoC and eval board
 - A series of fixes for APM X-Gene v1 and v2
 - Renesas R8A7795 CPU/PSCI additions
 - Marvell Berlin4CT PSCI, cpuidle, watchdog portions
 - Freescale LS1043a SoC and dev board support
 
 + some treewide or other misc changes
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Merge tag 'armsoc-dt64' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM 64-bit DT updates from Olof Johansson:
 "This is the first release where we split up the 64-bit contributions a
  bit more, and in particular we are having a separate DT branch for
  them.

  Contents:

   - New devices added to Broadcom NorthStar2
   - Misc fixes for Exynos7 boards
   - QCOM updates for MSM8916
   - Rockchip tweaks for rk3368 SoC and eval board
   - A series of fixes for APM X-Gene v1 and v2
   - Renesas R8A7795 CPU/PSCI additions
   - Marvell Berlin4CT PSCI, cpuidle, watchdog portions
   - Freescale LS1043a SoC and dev board support

  + some treewide or other misc changes"

* tag 'armsoc-dt64' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (104 commits)
  dts/ls2080a: Update DTSI to add support of SP805 WDT
  Documentation: DT: Add entry for ARM SP805-WDT
  arm64: dts: X-Gene v2: I2C1 clock is always on
  arm64: dts: X-Gene v1: I2C0 clock is always on
  arm64: dts: Fix to use standard DT node names for X-Gene 1 and X-Gene 2 platforms
  arm64: dts: hikey: add label properties to UARTs
  arm64: dts: apq8016-sbc: add label properties for UART, I2C, and SPI
  arm64: dts: apq8016-sbc: enable UART0 on LS connector
  arm64: dts: juno: Add idle-states to device tree
  arm64: dts: Added syscon-reboot node for FSL's LS2080A SoC
  arm64: dts: add LS1043a-RDB board support
  arm64: dts: add Freescale LS1043a SoC support
  Documentation: DT: Add entry for Freescale LS1043a-RDB board
  arm64: dts: uniphier: add PH1-LD10 SoC/board support
  arm64: renesas: r8a7795: fix SATA clock assignment
  arm64: dts: salvator-x: Enable SATA controller
  arm64: dts: r8a7795: Add SATA controller node
  arm64: renesas: r8a7795: add internal delay for i2c IPs
  arm64: renesas: salvator-x: Add board part number to DT bindings
  arm64: dts: r8a7795: Add pmu device nodes
  ...
2016-01-20 18:21:32 -08:00
Linus Torvalds 6d1c244803 ARM: DT updates for v4.5
As usual, the bulk of this release is again DT file contents.
 
 There's a huge number of changes here, and it's challenging to give a crisp
 overview of just what is in here. To start with:
 
 New boards:
 
 - TI-based DM3730 from LogicPD (Torpedo)
 - Cosmic+ M4 (nommu) initial support (Freescale Vybrid)
 - Raspberry Pi 2 DT files
 - Watchdog on Meson8b
 - Veyron-mickey (ASUS Chromebit) DTS
 - Rockchip rk3228 SoC and eval board
 - Sigma Designs Tango4
 
 Improvements:
 
 - Improved support for Qualcomm APQ8084, including Sony Xperia Z DT files
 - Misc new devices for Rockchip rk3036 and rk3288
 - Allwinner updates for misc SoCs and systems
 
 ... and a _large_ number of other changes across the field. Devices
 added to SoC DTSI and board DTS files for a number of SoC vendors, new
 product boards on already-supported SoCs, cleanups and refactorings of
 existing DTS/DTSI files and a bunch of other changes.
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Merge tag 'armsoc-dt' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM DT updates from Olof Johansson:
 "As usual, the bulk of this release is again DT file contents.

  There's a huge number of changes here, and it's challenging to give a
  crisp overview of just what is in here.  To start with:

  New boards:

   - TI-based DM3730 from LogicPD (Torpedo)
   - Cosmic+ M4 (nommu) initial support (Freescale Vybrid)
   - Raspberry Pi 2 DT files
   - Watchdog on Meson8b
   - Veyron-mickey (ASUS Chromebit) DTS
   - Rockchip rk3228 SoC and eval board
   - Sigma Designs Tango4

  Improvements:

   - Improved support for Qualcomm APQ8084, including Sony Xperia Z DT files
   - Misc new devices for Rockchip rk3036 and rk3288
   - Allwinner updates for misc SoCs and systems

  ... and a _large_ number of other changes across the field.  Devices
  added to SoC DTSI and board DTS files for a number of SoC vendors, new
  product boards on already-supported SoCs, cleanups and refactorings of
  existing DTS/DTSI files and a bunch of other changes"

* tag 'armsoc-dt' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (469 commits)
  ARM: dts: compulab: add new board description
  ARM: versatile: add the syscon LEDs to the DT
  dts: vt8500: Fix errors in SDHC node for WM8505
  ARM: dts: imx6q: clean up unused ipu2grp
  ARM: dts: silk: Add compatible property to "partitions" node
  ARM: dts: gose: Add compatible property to "partitions" node
  ARM: dts: porter: Add compatible property to "partitions" node
  ARM: dts: koelsch: Add compatible property to "partitions" node
  ARM: dts: lager: Add compatible property to "partitions" node
  ARM: dts: bockw: Add compatible property to "partitions" node
  ARM: dts: meson8b: Add watchdog node
  Documentation: watchdog: Add new bindings for meson8b
  ARM: meson: Add status LED for Odroid-C1
  ARM: dts: uniphier: fix a typo in comment block
  ARM: bcm2835: Add the auxiliary clocks to the device tree.
  ARM: bcm2835: Add devicetree for bcm2836 and Raspberry Pi 2 B
  ARM: bcm2835: Move the CPU/peripheral include out of common RPi DT.
  ARM: bcm2835: Split the DT for peripherals from the DT for the CPU
  ARM: realview: set up cache correctly on the PB11MPCore
  ARM: dts: Unify G2D device node with other devices on exynos4
  ...
2016-01-20 18:16:29 -08:00
Linus Torvalds 1305eda751 ARM: SoC platform updates for v4.5
Updates for new platform support:
 
 - New platform: Tango4 from Sigma Designs.
 - Broadcom BCM2836 (Raspberry Pi 2 SoC)
 - Enable cpufreq on Freescale i.MX7D
 - Rockchip: SMP support for rk3036, general support for rk3228
 - SMP support on Broadcom Kona and NSP
 - Cleanups for OMAP removing legacy IOMMU data
 
 + a bunch of misc fixes and tweaks for various platforms.
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Merge tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC platform updates from Olof Johansson:
 "Updates for new platform support:

   - New platform: Tango4 from Sigma Designs.
   - Broadcom BCM2836 (Raspberry Pi 2 SoC)
   - Enable cpufreq on Freescale i.MX7D
   - Rockchip: SMP support for rk3036, general support for rk3228
   - SMP support on Broadcom Kona and NSP
   - Cleanups for OMAP removing legacy IOMMU data

  + a bunch of misc fixes and tweaks for various platforms"

* tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (46 commits)
  ARM: tango: Fix UP build issues
  ARM: tango: pass ARM arch level for smc.S
  ARM: bcm2835: Add Kconfig support for bcm2836
  ARM: OMAP2+: Add support for dm814x and dra62x usb
  ARM: OMAP2+: Add mmc hwmod entries for dm814x
  ARM: OMAP2+: Update 81xx clock and power domains for default, active and sgx
  ARM: OMAP2+: Fix SoC detection for dra62x j5-eco
  ARM: tango4: Initial platform support
  ARM: bcm2835: Add a compat string for bcm2836 machine probe
  dt-bindings: Add root properties for Raspberry Pi 2
  ARM: imx: select SRC for i.MX7
  ARM: uniphier: select PINCTRL
  ARM: OMAP2+: Remove device creation for omap-pcm-audio
  ARM: OMAP1: Remove device creation for omap-pcm-audio
  ARM: rockchip: enable support for RK3228 SoCs
  ARM: rockchip: use const and __initconst for rk3036 smp_operations
  ARM: zynq: Select ARCH_HAS_RESET_CONTROLLER
  ARM: BCM: Add SMP support for Broadcom 4708
  ARM: BCM: Add SMP support for Broadcom NSP
  ARM: BCM: Clean up SMP support for Broadcom Kona
  ...
2016-01-20 18:10:05 -08:00
Linus Torvalds 6b5a12dbca ARM: SoC multiplatform code changes for v4.5
This branch is the culmination of 5 years of effort to bring the ARMv6
 and ARMv7 platforms together such that they can all be enabled and
 boot the same kernel. It has been a tremendous amount of cleanup and
 refactoring by a huge number of people, and creation of several new
 (and major) subsystems to better abstract out all the platform details
 in an appropriate manner.
 
 The bulk of this branch is a large patchset from Arnd that brings several
 of the more minor and older platforms we have closer to multiplatform
 support.  Among these are MMP, S3C64xx, Orion5x, mv78xx0 and realview
 Much of this is moving around header files from old mach directories,
 but there are also some cleanup patches of debug_ll (lowlevel debug
 per-platform options) and other parts.
 
 Linus Walleij also has some patchs to clean up the older ARM Realview
 platforms by finally introducing DT support, and Rob Herring has some
 for ARM Versatile which is now DT-only. Both of these platforms are
 now multiplatform.
 
 Finally, a couple of patches from Russell for Dove PMU, and a fix from
 Valentin Rothberg for Exynos ADC, which were rebased on top of the
 series to avoid conflicts.
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Merge tag 'armsoc-multiplatform' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC multiplatform code updates from Arnd Bergmann:
 "This branch is the culmination of 5 years of effort to bring the ARMv6
  and ARMv7 platforms together such that they can all be enabled and
  boot the same kernel.  It has been a tremendous amount of cleanup and
  refactoring by a huge number of people, and creation of several new
  (and major) subsystems to better abstract out all the platform details
  in an appropriate manner.

  The bulk of this branch is a large patchset from Arnd that brings
  several of the more minor and older platforms we have closer to
  multiplatform support.  Among these are MMP, S3C64xx, Orion5x, mv78xx0
  and realview Much of this is moving around header files from old mach
  directories, but there are also some cleanup patches of debug_ll
  (lowlevel debug per-platform options) and other parts.

  Linus Walleij also has some patchs to clean up the older ARM Realview
  platforms by finally introducing DT support, and Rob Herring has some
  for ARM Versatile which is now DT-only.  Both of these platforms are
  now multiplatform.

  Finally, a couple of patches from Russell for Dove PMU, and a fix from
  Valentin Rothberg for Exynos ADC, which were rebased on top of the
  series to avoid conflicts"

* tag 'armsoc-multiplatform' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (75 commits)
  ARM: realview: don't select SMP_ON_UP for UP builds
  ARM: s3c: simplify s3c_irqwake_{e,}intallow definition
  ARM: s3c64xx: fix pm-debug compilation
  iio: exynos-adc: fix irqf_oneshot.cocci warnings
  ARM: realview: build realview-dt SMP support only when used
  ARM: realview: select apropriate targets
  ARM: realview: clean up header files
  ARM: realview: make all header files local
  ARM: no longer make CPU targets visible separately
  ARM: integrator: use explicit core module options
  ARM: realview: enable multiplatform
  ARM: make default platform work for NOMMU
  ARM: debug-ll: move DEBUG_LL_UART_EFM32 to correct Kconfig location
  ARM: defconfig: use correct debug_ll settings
  ARM: versatile: convert to multi-platform
  ARM: versatile: merge mach code into a single file
  ARM: versatile: switch to DT only booting and remove legacy code
  ARM: versatile: add DT based PCI detection
  ARM: pxa: mark ezx structures as __maybe_unused
  ARM: pxa: mark raumfeld init functions as __maybe_unused
  ...
2016-01-20 18:03:56 -08:00
Linus Torvalds 5083c54264 ARM: SoC cleanups for v4.5
A smallish number of general cleanup commits this release cycle. Some
 of these are minor tweaks:
 
 - shmobile change of binding for their GIC (using arm,pl390 now)
 - ARCH_RENESAS introduction
 - Misc other renesas updates
 
 There's also a couple of treewide commits from Masahiro Yamada cleaning up
 const/__initconst for SMP operation structs and a switch to using "depends
 on" instead of if-constructs on most of the Kconfig platform targets.
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Merge tag 'armsoc-cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC cleanups from Olof Johansson:
 "A smallish number of general cleanup commits this release cycle.  Some
  of these are minor tweaks:

   - shmobile change of binding for their GIC (using arm,pl390 now)
   - ARCH_RENESAS introduction
   - Misc other renesas updates

  There's also a couple of treewide commits from Masahiro Yamada
  cleaning up const/__initconst for SMP operation structs and a switch
  to using "depends on" instead of if-constructs on most of the Kconfig
  platform targets"

* tag 'armsoc-cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  staging: board: armadillo800eva: Use "arm,pl390"
  staging: board: kzm9d: Use "arm,pl390"
  ARM: shmobile: r8a7778 dtsi: Use "arm,pl390" for GIC
  ARM: shmobile: emev2 dtsi: Use "arm,pl390" for GIC
  ARM: shmobile: r8a7740 dtsi: Use "arm,pl390" for GIC
  ARM: shmobile: r7s72100 dtsi: Use "arm,pl390" for GIC
  ARM: use "depends on" for SoC configs instead of "if" after prompt
  ARM/clocksource: use automatic DT probing for ux500 PRCMU
  ARM: use const and __initconst for smp_operations
  ARM: hisi: do not export smp_operations structures
  ARM: mvebu: remove unused mach/gpio.h
  ARM: shmobile: Remove legacy mach/irqs.h
  ARM: shmobile: Introduce ARCH_RENESAS
  MAINTAINERS: Remove link to oss.renesas.com which is closed
2016-01-20 17:55:20 -08:00
Linus Torvalds 0c582826a1 ARM: SoC non-urgent fixes for v4.5
As usual, we queue up a few fixes that don't seem urgent enough to go in
 through -rc.
 
  - MAINTAINERS updates to add a list for brcmstb and fix a typo
  - A handful of fixes for OMAP 81xx, a recently resurrected platform so these
    can't be considered real regressions and thus got queued.
  - A couple of other small fixes for scoop, sa1100 and davinci
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Merge tag 'armsoc-fixes-nc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull non-urgent ARM SoC fixes from Olof Johansson:
 "As usual, we queue up a few fixes that don't seem urgent enough to go
  in through -rc.

   - MAINTAINERS updates to add a list for brcmstb and fix a typo
   - A handful of fixes for OMAP 81xx, a recently resurrected platform
     so these can't be considered real regressions and thus got queued.
   - A couple of other small fixes for scoop, sa1100 and davinci"

* tag 'armsoc-fixes-nc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  ARM: OMAP2+: Fix randconfig build warning for dm814_pllss_data
  ARM: sa1100/simpad: Be sure to clamp return value
  ARM: scoop: Be sure to clamp return value
  ARM: davinci: fix a problematic usage of WARN()
  ARM: davinci: only select WT cache if cache is enabled
  ARM: OMAP2+: Remove useless check for legacy booting for dm814x
  ARM: OMAP2+: Enable GPIO for dm814x
  ARM: dts: Fix dm814x pinctrl address and mask
  ARM: dts: Fix dm8148 control modules ranges
  ARM: OMAP2+: Fix timer entries for dm814x
  ARM: dts: Fix some mux and divider clocks to get dm814x-evm booting
  ARM: OMAP2+: Add DPPLS clock manager for dm814x
  clk: ti: Add few dm814x clock aliases
  ARM: dts: Fix dm814x entries for pllss and prcm
  MAINTAINERS: gpio-brcmstb: Remove stray '>'
  MAINTAINERS: brcmstb: Include Broadcom internal mailing-list
2016-01-20 17:44:16 -08:00
Linus Torvalds e3de671dd6 asm-generic changes for 4.5
The asm-generic tree this time contains one series from Nicolas Pitre
 that makes the optimized do_div() implementation from the ARM
 architecture available to all architectures. This also adds stricter
 type checking for callers of do_div, which has uncovered a number
 of bugs in existing code, and fixes up the ones we have found.
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Merge tag 'asm-generic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic

Pull asm-generic updates from Arnd Bergmann:
 "The asm-generic tree this time contains one series from Nicolas Pitre
  that makes the optimized do_div() implementation from the ARM
  architecture available to all architectures.

  This also adds stricter type checking for callers of do_div, which has
  uncovered a number of bugs in existing code, and fixes up the ones we
  have found"

* tag 'asm-generic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic:
  ARM: asm/div64.h: adjust to generic codde
  __div64_32(): make it overridable at compile time
  __div64_const32(): abstract out the actual 128-bit cross product code
  do_div(): generic optimization for constant divisor on 32-bit machines
  div64.h: optimize do_div() for power-of-two constant divisors
  mtd/sm_ftl.c: fix wrong do_div() usage
  drm/mgag200/mgag200_mode.c: fix wrong do_div() usage
  hid-sensor-hub.c: fix wrong do_div() usage
  ti/fapll: fix wrong do_div() usage
  ti/clkt_dpll: fix wrong do_div() usage
  tegra/clk-divider: fix wrong do_div() usage
  imx/clk-pllv2: fix wrong do_div() usage
  imx/clk-pllv1: fix wrong do_div() usage
  nouveau/nvkm/subdev/clk/gk20a.c: fix wrong do_div() usage
2016-01-20 17:30:20 -08:00
Christoph Hellwig 20d666e411 dma-mapping: remove <asm-generic/dma-coherent.h>
This wasn't an asm-generic header to start with, and can be merged into
dma-mapping.h trivially.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Aurelien Jacquiot <a-jacquiot@ti.com>
Cc: Chris Metcalf <cmetcalf@ezchip.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Haavard Skinnemoen <hskinnemoen@gmail.com>
Cc: Hans-Christian Egtvedt <egtvedt@samfundet.no>
Cc: Helge Deller <deller@gmx.de>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: Jesper Nilsson <jesper.nilsson@axis.com>
Cc: Koichi Yasutake <yasutake.koichi@jp.panasonic.com>
Cc: Ley Foon Tan <lftan@altera.com>
Cc: Mark Salter <msalter@redhat.com>
Cc: Mikael Starvik <starvik@axis.com>
Cc: Steven Miao <realmz6@gmail.com>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Joerg Roedel <jroedel@suse.de>
Cc: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-01-20 17:09:18 -08:00
Christoph Hellwig e1c7e32453 dma-mapping: always provide the dma_map_ops based implementation
Move the generic implementation to <linux/dma-mapping.h> now that all
architectures support it and remove the HAVE_DMA_ATTR Kconfig symbol now
that everyone supports them.

[valentinrothberg@gmail.com: remove leftovers in Kconfig]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Aurelien Jacquiot <a-jacquiot@ti.com>
Cc: Chris Metcalf <cmetcalf@ezchip.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Haavard Skinnemoen <hskinnemoen@gmail.com>
Cc: Hans-Christian Egtvedt <egtvedt@samfundet.no>
Cc: Helge Deller <deller@gmx.de>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: Jesper Nilsson <jesper.nilsson@axis.com>
Cc: Koichi Yasutake <yasutake.koichi@jp.panasonic.com>
Cc: Ley Foon Tan <lftan@altera.com>
Cc: Mark Salter <msalter@redhat.com>
Cc: Mikael Starvik <starvik@axis.com>
Cc: Steven Miao <realmz6@gmail.com>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Joerg Roedel <jroedel@suse.de>
Cc: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Valentin Rothberg <valentinrothberg@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-01-20 17:09:18 -08:00
Christoph Hellwig bd38118f9c tile: uninline dma_set_mask
We'll soon merge <asm-generic/dma-mapping-common.h> into
<linux/dma-mapping.h> and the reference to dma_capable in the tile
dma_set_mask would create a circular dependency.

Fix this by moving the implementation out of line.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Chris Metcalf <cmetcalf@ezchip.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Joerg Roedel <jroedel@suse.de>
Cc: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-01-20 17:09:18 -08:00
Christoph Hellwig 30081d8ea4 sparc: use generic dma_set_mask
Sparc already uses the same code as the generic code for the PCI
implementation but just fails the call sbus.  This moves to the generic
implemenation which eventually return -EIO due to the NULL dma_mask
pointer in the device.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Joerg Roedel <jroedel@suse.de>
Cc: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-01-20 17:09:18 -08:00
Christoph Hellwig 5348c1e9e0 metag: convert to dma_map_ops
Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Joerg Roedel <jroedel@suse.de>
Cc: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-01-20 17:09:18 -08:00
Christoph Hellwig 340f3039ac m68k: convert to dma_map_ops
Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Joerg Roedel <jroedel@suse.de>
Cc: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-01-20 17:09:18 -08:00
Christoph Hellwig f151341ca0 mn10300: convert to dma_map_ops
Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: David Howells <dhowells@redhat.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Joerg Roedel <jroedel@suse.de>
Cc: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-01-20 17:09:18 -08:00
Christoph Hellwig 79387179e2 parisc: convert to dma_map_ops
Signed-off-by: Christoph Hellwig <hch@lst.de>
Tested-by: Helge Deller <deller@gmx.de>
Acked-by: Helge Deller <deller@gmx.de>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Joerg Roedel <jroedel@suse.de>
Cc: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-01-20 17:09:18 -08:00
Christoph Hellwig eae0751963 frv: convert to dma_map_ops
Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: David Howells <dhowells@redhat.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Joerg Roedel <jroedel@suse.de>
Cc: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-01-20 17:09:18 -08:00
Christoph Hellwig 5a1a67f1d7 nios2: convert to dma_map_ops
Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Ley Foon Tan <lftan@altera.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Joerg Roedel <jroedel@suse.de>
Cc: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-01-20 17:09:18 -08:00
Christoph Hellwig e20dd88995 cris: convert to dma_map_ops
Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Mikael Starvik <starvik@axis.com>
Cc: Jesper Nilsson <jesper.nilsson@axis.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Joerg Roedel <jroedel@suse.de>
Cc: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-01-20 17:09:18 -08:00
Christoph Hellwig 4605f04b28 c6x: convert to dma_map_ops
[dan.carpenter@oracle.com: C6X: fix build breakage]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Mark Salter <msalter@redhat.com>
Cc: Aurelien Jacquiot <a-jacquiot@ti.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Joerg Roedel <jroedel@suse.de>
Cc: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-01-20 17:09:18 -08:00
Christoph Hellwig 6f62097583 blackfin: convert to dma_map_ops
Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Steven Miao <realmz6@gmail.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Joerg Roedel <jroedel@suse.de>
Cc: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-01-20 17:09:18 -08:00
Christoph Hellwig a34a517ac9 avr32: convert to dma_map_ops
Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Haavard Skinnemoen <hskinnemoen@gmail.com>
Cc: Hans-Christian Egtvedt <egtvedt@samfundet.no>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Joerg Roedel <jroedel@suse.de>
Cc: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-01-20 17:09:18 -08:00
Christoph Hellwig 052c96dbe3 arc: convert to dma_map_ops
[vgupta@synopsys.com: ARC: dma mapping fixes #2]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Joerg Roedel <jroedel@suse.de>
Cc: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Cc: Carlos Palminha <CARLOS.PALMINHA@synopsys.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-01-20 17:09:18 -08:00
Christoph Hellwig 0d4a619b64 dma-mapping: make the generic coherent dma mmap implementation optional
This series converts all remaining architectures to use dma_map_ops and
the generic implementation of the DMA API.  This not only simplifies the
code a lot, but also prepares for possible future changes like more
generic non-iommu dma_ops implementations or generic per-device
dma_map_ops.

This patch (of 16):

We have a couple architectures that do not want to support this code, so
add another Kconfig symbol that disables the code similar to what we do
for the nommu case.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Haavard Skinnemoen <hskinnemoen@gmail.com>
Cc: Hans-Christian Egtvedt <egtvedt@samfundet.no>
Cc: Steven Miao <realmz6@gmail.com>
Cc: Ley Foon Tan <lftan@altera.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Koichi Yasutake <yasutake.koichi@jp.panasonic.com>
Cc: Chris Metcalf <cmetcalf@ezchip.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Aurelien Jacquiot <a-jacquiot@ti.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Helge Deller <deller@gmx.de>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: Jesper Nilsson <jesper.nilsson@axis.com>
Cc: Mark Salter <msalter@redhat.com>
Cc: Mikael Starvik <starvik@axis.com>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Joerg Roedel <jroedel@suse.de>
Cc: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-01-20 17:09:18 -08:00
Daniel Axtens bf76f73c5f powerpc: enable UBSAN support
This hooks up UBSAN support for PowerPC.

So far it's found some interesting cases where we don't properly sanitise
input to shifts, including one in our futex handling.  Nothing critical,
but interesting and worth fixing.

[valentinrothberg@gmail.com: arch/powerpc/Kconfig: fix typo in select statement]
Signed-off-by: Daniel Axtens <dja@axtens.net>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Tested-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com>
Acked-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Valentin Rothberg <valentinrothberg@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-01-20 17:09:18 -08:00
Andrey Ryabinin c6d308534a UBSAN: run-time undefined behavior sanity checker
UBSAN uses compile-time instrumentation to catch undefined behavior
(UB).  Compiler inserts code that perform certain kinds of checks before
operations that could cause UB.  If check fails (i.e.  UB detected)
__ubsan_handle_* function called to print error message.

So the most of the work is done by compiler.  This patch just implements
ubsan handlers printing errors.

GCC has this capability since 4.9.x [1] (see -fsanitize=undefined
option and its suboptions).
However GCC 5.x has more checkers implemented [2].
Article [3] has a bit more details about UBSAN in the GCC.

[1] - https://gcc.gnu.org/onlinedocs/gcc-4.9.0/gcc/Debugging-Options.html
[2] - https://gcc.gnu.org/onlinedocs/gcc/Debugging-Options.html
[3] - http://developerblog.redhat.com/2014/10/16/gcc-undefined-behavior-sanitizer-ubsan/

Issues which UBSAN has found thus far are:

Found bugs:

 * out-of-bounds access - 97840cb67f ("netfilter: nfnetlink: fix
   insufficient validation in nfnetlink_bind")

undefined shifts:

 * d48458d4a7 ("jbd2: use a better hash function for the revoke
   table")

 * 10632008b9 ("clockevents: Prevent shift out of bounds")

 * 'x << -1' shift in ext4 -
   http://lkml.kernel.org/r/<5444EF21.8020501@samsung.com>

 * undefined rol32(0) -
   http://lkml.kernel.org/r/<1449198241-20654-1-git-send-email-sasha.levin@oracle.com>

 * undefined dirty_ratelimit calculation -
   http://lkml.kernel.org/r/<566594E2.3050306@odin.com>

 * undefined roundown_pow_of_two(0) -
   http://lkml.kernel.org/r/<1449156616-11474-1-git-send-email-sasha.levin@oracle.com>

 * [WONTFIX] undefined shift in __bpf_prog_run -
   http://lkml.kernel.org/r/<CACT4Y+ZxoR3UjLgcNdUm4fECLMx2VdtfrENMtRRCdgHB2n0bJA@mail.gmail.com>

   WONTFIX here because it should be fixed in bpf program, not in kernel.

signed overflows:

 * 32a8df4e0b ("sched: Fix odd values in effective_load()
   calculations")

 * mul overflow in ntp -
   http://lkml.kernel.org/r/<1449175608-1146-1-git-send-email-sasha.levin@oracle.com>

 * incorrect conversion into rtc_time in rtc_time64_to_tm() -
   http://lkml.kernel.org/r/<1449187944-11730-1-git-send-email-sasha.levin@oracle.com>

 * unvalidated timespec in io_getevents() -
   http://lkml.kernel.org/r/<CACT4Y+bBxVYLQ6LtOKrKtnLthqLHcw-BMp3aqP3mjdAvr9FULQ@mail.gmail.com>

 * [NOTABUG] signed overflow in ktime_add_safe() -
   http://lkml.kernel.org/r/<CACT4Y+aJ4muRnWxsUe1CMnA6P8nooO33kwG-c8YZg=0Xc8rJqw@mail.gmail.com>

[akpm@linux-foundation.org: fix unused local warning]
[akpm@linux-foundation.org: fix __int128 build woes]
Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sasha Levin <sasha.levin@oracle.com>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Michal Marek <mmarek@suse.cz>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Yury Gribov <y.gribov@samsung.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Konstantin Khlebnikov <koct9i@gmail.com>
Cc: Kostya Serebryany <kcc@google.com>
Cc: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-01-20 17:09:18 -08:00
Xunlei Pang 978e30c9b4 kexec: move some memembers and definitions within the scope of CONFIG_KEXEC_FILE
Move the stuff currently only used by the kexec file code within
CONFIG_KEXEC_FILE (and CONFIG_KEXEC_VERIFY_SIG).

Also move internal "struct kexec_sha_region" and "struct kexec_buf" into
"kexec_internal.h".

Signed-off-by: Xunlei Pang <xlpang@redhat.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Dave Young <dyoung@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-01-20 17:09:18 -08:00
Rasmus Villemoes a051216427 powerpc/fadump: rename cpu_online_mask member of struct fadump_crash_info_header
The four cpumasks cpu_{possible,online,present,active}_bits are exposed
readonly via the corresponding const variables cpu_xyz_mask.  But they are
also accessible for arbitrary writing via the exposed functions
set_cpu_xyz.  There's quite a bit of code throughout the kernel which
iterates over or otherwise accesses these bitmaps, and having the access
go via the cpu_xyz_mask variables is nowadays [1] simply a useless
indirection.

It may be that any problem in CS can be solved by an extra level of
indirection, but that doesn't mean every extra indirection solves a
problem.  In this case, it even necessitates some minor ugliness (see
4/6).

Patch 1/6 is new in v2, and fixes a build failure on ppc by renaming a
struct member, to avoid problems when the identifier cpu_online_mask
becomes a macro later in the series.  The next four patches eliminate the
cpu_xyz_mask variables by simply exposing the actual bitmaps, after
renaming them to discourage direct access - that still happens through
cpu_xyz_mask, which are now simply macros with the same type and value as
they used to have.

After that, there's no longer any reason to have the setter functions be
out-of-line: The boolean parameter is almost always a literal true or
false, so by making them static inlines they will usually compile to one
or two instructions.

For a defconfig build on x86_64, bloat-o-meter says we save ~3000 bytes.
We also save a little stack (stackdelta says 127 functions have a 16 byte
smaller stack frame, while two grow by that amount).  Mostly because, when
iterating over the mask, gcc typically loads the value of cpu_xyz_mask
into a callee-saved register and from there into %rdi before each
find_next_bit call - now it can just load the appropriate immediate
address into %rdi before each call.

[1] See Rusty's kind explanation
http://thread.gmane.org/gmane.linux.kernel/2047078/focus=2047722 for
some historic context.

This patch (of 6):

As preparation for eliminating the indirect access to the various global
cpu_*_bits bitmaps via the pointer variables cpu_*_mask, rename the
cpu_online_mask member of struct fadump_crash_info_header to simply
online_mask, thus allowing cpu_online_mask to become a macro.

Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Acked-by: Michael Ellerman <mpe@ellerman.id.au>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-01-20 17:09:18 -08:00
Stephen Boyd ef5c16b85b arch/frv/include/asm/io.h: accept const void pointers for read{b,w,l}()
The SMD driver is reading and writing chunks of data to iomem, and
there's an __iowrite32_copy() function for the writing part, but no
__ioread32_copy() function for the reading part.  This series adds
__ioread32_copy() and uses it in two places.

This patch (of 4):

The frv port uses compiler builtins, __builtin_read*(), for the I/O read
routines.  Unfortunately, these don't accept const void pointers although
the generic ASM implementations do, so generic code passing const pointers
to these APIs cause compilers to emit warnings.  Add wrapper functions
that cast away the const to avoid the warnings.

Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Cc: David Howells <dhowells@redhat.com>
Cc: <zajec5@gmail.com>
Cc: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Cc: Hauke Mehrtens <hauke@hauke-m.de>
Cc: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-01-20 17:09:18 -08:00
Guenter Roeck dcd6c87cc5 mm: arch: remove duplicate definitions of MADV_FREE
Commits 21f55b018b ("arch/*/include/uapi/asm/mman.h: : let MADV_FREE
have same value for all architectures") and ef58978f1e ("mm: define
MADV_FREE for some arches") both defined MADV_FREE, but did not use the
same values.  This results in build errors such as

  ./arch/alpha/include/uapi/asm/mman.h:53:0: error: "MADV_FREE" redefined
  ./arch/alpha/include/uapi/asm/mman.h:50:0: note: this is the location of the previous definition

for the affected architectures.

Fixes: 21f55b018b ("arch/*/include/uapi/asm/mman.h: : let MADV_FREE have same value for all architectures")
Fixes: ef58978f1e ("mm: define MADV_FREE for some arches")
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Cc: Chen Gang <gang.chen.5i5j@gmail.com>
Cc: Minchan Kim <minchan@kernel.org>
Acked-by: Helge Deller <deller@gmx.de>	[parisc]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-01-20 17:09:18 -08:00
Rafael J. Wysocki 6efd3f8cde Merge branch 'pm-core'
* pm-core:
  driver core: Avoid NULL pointer dereferences in device_is_bound()
  platform: Do not detach from PM domains on shutdown
  USB / PM: Allow USB devices to remain runtime-suspended when sleeping
  PM / sleep: Go direct_complete if driver has no callbacks
  PM / Domains: add setter for dev.pm_domain
  device core: add device_is_bound()
2016-01-21 00:42:59 +01:00
Yoshinori Sato 2f1b0077a9 h8300: System call entry enable interrupt.
Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
2016-01-20 23:28:01 +09:00
Yoshinori Sato bf24eec39a h8300: show_stack cleanup
- fix stack limit. h8300's stack not aligned 4byte.
- pritty output form.

Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
2016-01-20 23:28:00 +09:00
Yoshinori Sato db903b462b h8300: Restraint of warning.
Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
2016-01-20 23:27:59 +09:00
Yoshinori Sato 96ff2d7081 h8300: Add KGDB support.
Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
2016-01-20 23:27:30 +09:00
Yoshinori Sato 9ee05bb627 h8300: signal stack fix
Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
2016-01-20 22:44:13 +09:00
Yoshinori Sato 42b510eb56 h8300: Add LZO compression
Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
2016-01-20 22:44:13 +09:00
Yoshinori Sato af3da5798d h8300: zImage alignment fix
Missing alignment for .data section.
Sometime bootup failed.

Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
2016-01-20 22:43:26 +09:00
Yoshinori Sato 3724d31889 h8300: zImage alignment fix
Missing alignment for .data section.
Sometime bootup failed.

Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
2016-01-20 22:43:26 +09:00
Linus Torvalds 2b4015e9fb platform-drivers-x86 for 4.5-1
Add intel punit and telemetry driver for APL SoCs.
 Add intel-hid driver for various laptop hotkey support.
 Add asus-wireless radio control driver.
 Keyboard backlight support/improvements for ThinkPads, Vaio, and Toshiba.
 Several hotkey related fixes and improvements for dell and toshiba.
 Fix oops on dual GPU Macs in apple-gmux.
 A few new device IDs and quirks.
 Various minor config related build issues and cleanups.
 
 surface pro 4:
  - fix compare_const_fl.cocci warnings
  - Add support for Surface Pro 4 Buttons
 
 platform/x86:
  - Add Intel Telemetry Debugfs interfaces
  - Add Intel telemetry platform device
  - Add Intel telemetry platform driver
  - Add Intel Telemetry Core Driver
  - add NULL check for input parameters
  - add Intel P-Unit mailbox IPC driver
  - update acpi resource structure for Punit
 
 thinkpad_acpi:
  - Add support for keyboard backlight
 
 dell-wmi:
  - Process only one event on devices with interface version 0
  - Check if Dell WMI descriptor structure is valid
  - Improve unknown hotkey handling
  - Use a C99-style array for bios_to_linux_keycode
 
 tc1100-wmi:
  - fix build warning when CONFIG_PM not enabled
 
 asus-wireless:
  - Add ACPI HID ATK4001
  - Add Asus Wireless Radio Control driver
 
 asus-wmi:
  - drop to_platform_driver macro
 
 intel-hid:
  - new hid event driver for hotkeys
 
 sony-laptop:
  - Keyboard backlight control for some Vaio Fit models
 
 ideapad-laptop:
  - Add Lenovo ideapad Y700-17ISK to no_hw_rfkill dmi list
 
 apple-gmux:
  - Assign apple_gmux_data before registering
 
 toshiba_acpi:
  - Add rfkill dependency to ACPI_TOSHIBA entry
  - Fix keyboard backlight sysfs entries not being updated
  - Add WWAN RFKill support
  - Add support for WWAN devices
  - Fix blank screen at boot if transflective backlight is supported
  - Propagate the hotkey value via genetlink
 
 toshiba_bluetooth:
  - Add missing newline in toshiba_bluetooth_present function
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Merge tag 'platform-drivers-x86-v4.5-1' of git://git.infradead.org/users/dvhart/linux-platform-drivers-x86

Pull x86 platform driver updates from Darren Hart:
 "Add intel punit and telemetry driver for APL SoCs.
  Add intel-hid driver for various laptop hotkey support.
  Add asus-wireless radio control driver.
  Keyboard backlight support/improvements for ThinkPads, Vaio, and Toshiba.
  Several hotkey related fixes and improvements for dell and toshiba.
  Fix oops on dual GPU Macs in apple-gmux.
  A few new device IDs and quirks.
  Various minor config related build issues and cleanups.

  surface pro 4:
   - fix compare_const_fl.cocci warnings
   - Add support for Surface Pro 4 Buttons

  platform/x86:
   - Add Intel Telemetry Debugfs interfaces
   - Add Intel telemetry platform device
   - Add Intel telemetry platform driver
   - Add Intel Telemetry Core Driver
   - add NULL check for input parameters
   - add Intel P-Unit mailbox IPC driver
   - update acpi resource structure for Punit

  thinkpad_acpi:
   - Add support for keyboard backlight

  dell-wmi:
   - Process only one event on devices with interface version 0
   - Check if Dell WMI descriptor structure is valid
   - Improve unknown hotkey handling
   - Use a C99-style array for bios_to_linux_keycode

  tc1100-wmi:
   - fix build warning when CONFIG_PM not enabled

  asus-wireless:
   - Add ACPI HID ATK4001
   - Add Asus Wireless Radio Control driver

  asus-wmi:
   - drop to_platform_driver macro

  intel-hid:
   - new hid event driver for hotkeys

  sony-laptop:
   - Keyboard backlight control for some Vaio Fit models

  ideapad-laptop:
   - Add Lenovo ideapad Y700-17ISK to no_hw_rfkill dmi list

  apple-gmux:
   - Assign apple_gmux_data before registering

  toshiba_acpi:
   - Add rfkill dependency to ACPI_TOSHIBA entry
   - Fix keyboard backlight sysfs entries not being updated
   - Add WWAN RFKill support
   - Add support for WWAN devices
   - Fix blank screen at boot if transflective backlight is supported
   - Propagate the hotkey value via genetlink

  toshiba_bluetooth:
   - Add missing newline in toshiba_bluetooth_present function"

* tag 'platform-drivers-x86-v4.5-1' of git://git.infradead.org/users/dvhart/linux-platform-drivers-x86: (29 commits)
  surface pro 4: fix compare_const_fl.cocci warnings
  surface pro 4: Add support for Surface Pro 4 Buttons
  platform:x86: Add Intel Telemetry Debugfs interfaces
  platform:x86: Add Intel telemetry platform device
  platform:x86: Add Intel telemetry platform driver
  platform/x86: Add Intel Telemetry Core Driver
  intel_punit_ipc: add NULL check for input parameters
  thinkpad_acpi: Add support for keyboard backlight
  dell-wmi: Process only one event on devices with interface version 0
  dell-wmi: Check if Dell WMI descriptor structure is valid
  tc1100-wmi: fix build warning when CONFIG_PM not enabled
  asus-wireless: Add ACPI HID ATK4001
  platform/x86: Add Asus Wireless Radio Control driver
  asus-wmi: drop to_platform_driver macro
  intel-hid: new hid event driver for hotkeys
  Keyboard backlight control for some Vaio Fit models
  platform/x86: Add rfkill dependency to ACPI_TOSHIBA entry
  platform:x86: add Intel P-Unit mailbox IPC driver
  intel_pmc_ipc: update acpi resource structure for Punit
  ideapad-laptop: Add Lenovo ideapad Y700-17ISK to no_hw_rfkill dmi list
  ...
2016-01-19 17:54:15 -08:00
Souvik Kumar Chakravarty 378f956e3f platform/x86: Add Intel Telemetry Core Driver
Intel PM Telemetry is a software mechanism via which various SoC
PM and performance related parameters like PM counters, firmware
trace verbosity, the status of different devices inside the SoC, etc.
can be monitored and analyzed. The different samples that may be
monitored can be configured at runtime via exported APIs.

This patch adds the telemetry core driver that implements basic
exported APIs.

Signed-off-by: Souvik Kumar Chakravarty <souvik.k.chakravarty@intel.com>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
2016-01-19 17:35:50 -08:00
Qipeng Zha fdca4f16f5 platform:x86: add Intel P-Unit mailbox IPC driver
This driver provides support for P-Unit mailbox IPC on Intel platforms.
The heart of the P-Unit is the Foxton microcontroller and its firmware,
which provide mailbox interface for power management usage.

Signed-off-by: Qipeng Zha <qipeng.zha@intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
2016-01-19 15:49:36 -08:00
Maciej W. Rozycki 503943e0e5 MIPS: Add IEEE Std 754 conformance mode selection
Add an `ieee754=' kernel parameter to control IEEE Std 754 conformance
mode.

Use separate flags copied from the respective CPU feature flags, and
adjusted according to the conformance mode selected, to make binaries
requesting individual NaN encoding modes accepted or rejected as needed.
Update the initial setting for FCSR and, in the full FPU emulation mode,
its read-only mask accordingly.  Accept the mode selection requested for
legacy processors as well.

As with the EF_MIPS_NAN2008 ELF file header flag adjust both ABS2008 and
NAN2008 bits at the same time, to match the choice made for hardware
currently implemented.

Signed-off-by: Maciej W. Rozycki <macro@imgtec.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Matthew Fortune <Matthew.Fortune@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/11481/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-01-20 00:39:20 +01:00
Maciej W. Rozycki 93adeaf6da MIPS: Determine the presence of IEEE Std 754-2008 features
Determine the presence of and the amount of control available over IEEE
Std 754-2008 features.

In the case of a hardware FPU being used examine the FIR register for
the presence of the HAS2008 bit and then the FCSR register for the
writability of the ABS2008 and NAN2008 bits and the hardwired state of
each of these bits if read-only.  Update the initial FCSR contents used
for threads and the FCSR writability mask accordingly.

For full FPU emulation and MIPS32 or MIPS64 processors make the FCSR
ABS2008 and NAN2008 bits writable.

Signed-off-by: Maciej W. Rozycki <macro@imgtec.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Matthew Fortune <Matthew.Fortune@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/11480/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-01-20 00:39:20 +01:00
Maciej W. Rozycki 2b5e869ecf MIPS: ELF: Interpret the NAN2008 file header flag
Handle the EF_MIPS_NAN2008 ELF file header flag and refuse execution
where there is no support in the FPU for the NaN encoding mode requested
by a binary invoked.  Ensure that the setting of the bit in the binary
matches one in any intepreter used.  Set the thread's initial FCSR
contents according to the value of the EF_MIPS_NAN2008.

Set the values of the FCSR ABS2008 and NAN2008 bits both to the same
value if possible, to take the approach taken with existing FPU hardware
into account.  As of now all implementations have both bits hardwired to
the same value, that is both are fixed at 0 or both are fixed at 1, even
though the architecture allows for implementations where the amount of
control implemented with each of these two individual bits is
independent of each other.

Signed-off-by: Maciej W. Rozycki <macro@imgtec.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Matthew Fortune <Matthew.Fortune@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/11479/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-01-20 00:39:20 +01:00
Maciej W. Rozycki eb4bc076ff ELF: Also pass any interpreter's file header to `arch_check_elf'
Also pass any interpreter's file header to `arch_check_elf' so that any
architecture handler can have a look at it if needed.

Signed-off-by: Maciej W. Rozycki <macro@imgtec.com>
Acked-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Al Viro <viro@zeniv.linux.org.uk>
Cc: Matthew Fortune <Matthew.Fortune@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/11478/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-01-20 00:39:20 +01:00
Maciej W. Rozycki 90d53a91fb MIPS: math-emu: Add IEEE Std 754-2008 NaN encoding emulation
Implement IEEE Std 754-2008 NaN encoding wired to the state of the
FCSR.NAN2008 bit.  Make the interpretation of the quiet bit in NaN data
as follows:

* in the legacy mode originally defined by the MIPS architecture the
  value of 1 denotes an sNaN whereas the value of 0 denotes a qNaN,

* in the 2008 mode introduced with revision 5 of the MIPS architecture
  the value of 0 denotes an sNaN whereas the value of 1 denotes a qNaN,
  following the definition of the preferred NaN encoding introduced with
  IEEE Std 754-2008.

In the 2008 mode, following the requirement of the said standard, quiet
an sNaN where needed by setting the quiet bit to 1 and leaving all the
NaN payload bits unchanged.

Update format conversion operations according to the rules set by IEEE
Std 754-2008 and the MIPS architecture.  Specifically:

* propagate NaN payload bits through conversions between floating-point
  formats such that as much information as possible is preserved and
  specifically a conversion from a narrower format to a wider format and
  then back to the original format does not change a qNaN payload in any
  way,

* conversions from a floating-point to an integer format where the
  source is a NaN, infinity or a value that would convert to an integer
  outside the range of the result format produce, under the default
  exception handling, the respective values defined by the MIPS
  architecture.

In full FPU emulation set the FIR.HAS2008 bit to 1, however do not make
any further FCSR bits writable.

Signed-off-by: Maciej W. Rozycki <macro@imgtec.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Matthew Fortune <Matthew.Fortune@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/11477/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-01-20 00:39:20 +01:00
Maciej W. Rozycki 198f70589e MIPS: math-emu: Add IEEE Std 754-2008 ABS.fmt and NEG.fmt emulation
Implement IEEE Std 754-2008 non-arithmetic ABS.fmt and NEG.fmt emulation
wired to the state of the FCSR.ABS2008 bit.  In the non-arithmetic mode
the sign bit is altered according to the operation requested regardless
of the datum encoded in the input operand, no other bits are changed,
the resulting bit pattern is written to the output operand and no
exception is ever signalled.

Signed-off-by: Maciej W. Rozycki <macro@imgtec.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Matthew Fortune <Matthew.Fortune@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/11476/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-01-20 00:39:20 +01:00
Maciej W. Rozycki 9519ef37a4 MIPS: Define the legacy-NaN and 2008-NaN features
Allocate CPU option bits and define macros for the legacy-NaN and
2008-NaN IEEE Std 754 MIPS architecture features.  Unconditionally mark
the legacy-NaN feature as present across hardware and emulated
floating-point configurations.

Signed-off-by: Maciej W. Rozycki <macro@imgtec.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Matthew Fortune <Matthew.Fortune@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/11475/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-01-20 00:39:20 +01:00
Maciej W. Rozycki 2ed02dd415 MIPS: Use a union to access the ELF file header
Rewrite `arch_elf_pt_proc' and `arch_check_elf' using a union to access
the ELF file header.

Signed-off-by: Maciej W. Rozycki <macro@imgtec.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Matthew Fortune <Matthew.Fortune@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/11474/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-01-20 00:39:20 +01:00
John Crispin 7e5873d375 MIPS: pci: Add MT7620a PCIE driver
The "a" version of the MT7620 has single port PCIE bus. The driver is
straightforward without any special magic required. The driver works on
MT7620 and MT7628. There are a few magic values that get written to the
pcie phy and a register of which we only know the name. I marked these
places as vodoo in the comments above the code.

Signed-off-by: John Crispin <blogic@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/11996/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-01-20 00:39:20 +01:00
John Crispin 3b2e7c7c83 MIPS: ralink: Add a few missing clocks
Signed-off-by: John Crispin <blogic@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/11995/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-01-20 00:39:20 +01:00
John Crispin 3bca798b85 MIPS: ralink: Fix vendor string for mt7620
Ralink was acquired by Mediatek. Represent this in the cpuinfo. It
apparently confused people.

Signed-off-by: John Crispin <blogic@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/11994/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-01-20 00:39:20 +01:00
John Crispin 0af3a40f09 MIPS: ralink: Fix invalid assignment of SoC type
Commit 418d29c870 ("MIPS: ralink: Unify SoC id handling") introduced
broken code. We obviously need to assign the value.

Signed-off-by: John Crispin <blogic@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/11993/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-01-20 00:39:20 +01:00
John Crispin fad2522272 MIPS: ralink: fix USB frequency scaling
Commit 418d29c870 ("MIPS: ralink: Unify SoC id handling") was not fully
correct. The logic for the SoC check got inverted. We need to check if it
is not a MT76x8.

Signed-off-by: John Crispin <blogic@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/11992/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-01-20 00:39:20 +01:00
John Crispin e906a5f67e MIPS: ralink: MT7688 pinmux fixes
A few fixes to the pinmux data, 2 new muxes and a minor whitespace
cleanup.

Signed-off-by: John Crispin <blogic@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/11991/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-01-20 00:39:20 +01:00
John Crispin 1df7addb96 MIPS: ralink: add MT7621 support
MT7621 is based on a 1004k core. This patch adds support for the SoC. The
timer and IRQ is just boiler plate as GIC has recently been moved to
generic places in the kernel and just works.

Signed-off-by: John Crispin <blogic@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/11990/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-01-20 00:39:20 +01:00
John Crispin 2761f83cad MIPS: ralink: add a symbol for INTC
Some of the newer SoCs use the GIC. This patch splits the INTC out into its
own symbol, allowing us to add the gic code in the following patch.

Signed-off-by: John Crispin <blogic@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/11989/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-01-20 00:39:20 +01:00
Rafał Miłecki 3d1f664ab9 MIPS: BCM47xx: Support SPROM prefixes on other platforms
BCM47XX platform has specific PCI setup because all buses share the same
domain. It's different e.g. on ARM ARCH_BCM_5301X where each PCI bus
gets its own domain (they are handled by iProc PCIe controller driver).

As we want to make SPROM driver more generic, let's add an exception for
BCM47xx. It was tested on BCM4706 (MIPS) and BCM4708A0 (ARM).

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Cc: Hauke Mehrtens <hauke@hauke-m.de>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/11969/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-01-20 00:39:20 +01:00
Heiko Carstens 9cb1ccecb6 s390: remove all usages of PSW_ADDR_INSN
Yet another leftover from the 31 bit era. The usual operation
"y = x & PSW_ADDR_INSN" with the PSW_ADDR_INSN mask is a nop for
CONFIG_64BIT.

Therefore remove all usages and hope the code is a bit less confusing.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
2016-01-19 12:14:03 +01:00
Heiko Carstens fecc868a66 s390: remove all usages of PSW_ADDR_AMODE
This is a leftover from the 31 bit area. For CONFIG_64BIT the usual
operation "y = x | PSW_ADDR_AMODE" is a nop. Therefore remove all
usages of PSW_ADDR_AMODE and make the code a bit less confusing.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
2016-01-19 12:14:02 +01:00
Heiko Carstens 696aafd369 s390: wire up copy_file_range syscall
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2016-01-19 12:14:02 +01:00
Heiko Carstens cd17e153af s390: remove superfluous memblock_alloc() return value checks
memblock_alloc() and memblock_alloc_base() will panic on their own if
they can't find free memory. Therefore remove some pointless checks.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Acked-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2016-01-19 12:14:02 +01:00
Heiko Carstens ef1f7fd7eb s390/numa: allocate memory with correct alignment
Allocating memory with a requested minimum alignment of 1 is wrong
since pg_data_t contains a spinlock which requires an alignment of 4
bytes.

Therefore fix this and ask for an alignment of 8 bytes like it is
guarenteed for all kmalloc requests.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Acked-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2016-01-19 12:14:01 +01:00
Christian Borntraeger 204ee2c564 s390/irqflags: optimize irq restore
The ssm instruction takes longer that stnsm/stosm as it is often
used to modify DAT and PER. We know that irqsave/irqrestore only
deals with external and I/O interrupts and we know that irqrestore
can transition only from disabled->disabled or disabled->enabled,
so we can use the faster stosm.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2016-01-19 12:14:01 +01:00
Dominik Dingel a9d7ab9781 s390/mm: use TASK_MAX_SIZE where applicable
To improve readability we can use TASK_MAX_SIZE when we just check for the
upper limit.  All places explicitly dealing with 3 vs 4 level pgtables
were left unchanged.

Signed-off-by: Dominik Dingel <dingel@linux.vnet.ibm.com>
Reviewed-By: Sascha Silbe <silbe@linux.vnet.ibm.com>
2016-01-19 12:14:01 +01:00
Alex Thorlton d394f2d9d8 x86/platform/UV: Remove EFI memmap quirk for UV2+
Commit a5d90c923b ("x86/efi: Quirk out SGI UV") added a quirk
to efi_apply_memmap_quirks to force SGI UV systems to fall back
to the old EFI memmap mechanism.  We have a BIOS fix for this
issue on all systems except for UV1.  This commit fixes up the
EFI quirk/MMR mapping code so that we only apply the special
case to UV1 hardware.

Signed-off-by: Alex Thorlton <athorlton@sgi.com>
Reviewed-by: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Dimitri Sivanich <sivanich@sgi.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Hedi Berriche <hedi@sgi.com>
Cc: Len Brown <len.brown@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Travis <travis@sgi.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-efi@vger.kernel.org
Link: http://lkml.kernel.org/r/1449867585-189233-2-git-send-email-athorlton@sgi.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-01-19 11:58:56 +01:00
Andy Shevchenko b000de5848 x86/platform/intel-mid: Join string and fix SoC name
Join string back to make grepping a bit easier. While here,
lowering case for Penwell SoC name in one case to be aligned
with the rest messages.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mika Westerberg <mika.westerberg@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1452888668-147116-2-git-send-email-andriy.shevchenko@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-01-19 08:39:56 +01:00
Andy Shevchenko 3fda5bb420 x86/platform/intel-mid: Enable 64-bit build
Intel Tangier SoC is known to have 64-bit dual core CPU. Enable
64-bit build for it.

The kernel has been tested on Intel Edison board:

	Linux buildroot 4.4.0-next-20160115+ #25 SMP Fri Jan 15 22:03:19 EET 2016 x86_64 GNU/Linux

	processor       : 0
	vendor_id       : GenuineIntel
	cpu family      : 6
	model           : 74
	model name      : Genuine Intel(R) CPU   4000  @  500MHz
	stepping        : 8

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mika Westerberg <mika.westerberg@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1452888668-147116-1-git-send-email-andriy.shevchenko@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-01-19 08:39:56 +01:00
Linus Torvalds a200dcb346 virtio: barrier rework+fixes
This adds a new kind of barrier, and reworks virtio and xen
 to use it.
 Plus some fixes here and there.
 
 Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost

Pull virtio barrier rework+fixes from Michael Tsirkin:
 "This adds a new kind of barrier, and reworks virtio and xen to use it.

  Plus some fixes here and there"

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: (44 commits)
  checkpatch: add virt barriers
  checkpatch: check for __smp outside barrier.h
  checkpatch.pl: add missing memory barriers
  virtio: make find_vqs() checkpatch.pl-friendly
  virtio_balloon: fix race between migration and ballooning
  virtio_balloon: fix race by fill and leak
  s390: more efficient smp barriers
  s390: use generic memory barriers
  xen/events: use virt_xxx barriers
  xen/io: use virt_xxx barriers
  xenbus: use virt_xxx barriers
  virtio_ring: use virt_store_mb
  sh: move xchg_cmpxchg to a header by itself
  sh: support 1 and 2 byte xchg
  virtio_ring: update weak barriers to use virt_xxx
  Revert "virtio_ring: Update weak barriers to use dma_wmb/rmb"
  asm-generic: implement virt_xxx memory barriers
  x86: define __smp_xxx
  xtensa: define __smp_xxx
  tile: define __smp_xxx
  ...
2016-01-18 16:44:24 -08:00
Linus Torvalds d05d82f711 Merge git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile
Pull arch/tile updates from Chris Metcalf:
 "This is a grab bag of changes that includes some NOHZ and
  context-tracking related changes, some debugging improvements,
  JUMP_LABEL support, and some fixes for tilepro allmodconfig support.

  We also remove the now-unused node_has_online_mem() definitions both
  for tile's asm/topology.h as well as in linux/topology.h itself"

* git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile:
  numa: remove stale node_has_online_mem() define
  arch/tile: move user_exit() to early kernel entry sequence
  tile: fix bug in setting PT_FLAGS_DISABLE_IRQ on kernel entry
  tile: fix tilepro casts for readl, writel, etc
  tile: fix a -Wframe-larger-than warning
  tile: include the syscall number in the backtrace
  MAINTAINERS: add git URL for tile
  arch/tile: adopt prepare_exit_to_usermode() model from x86
  tile/jump_label: add jump label support for TILE-Gx
  tile: define a macro ktext_writable_addr to get writable kernel text address
2016-01-18 12:57:18 -08:00
Linus Torvalds d90f351a9b Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/egtvedt/linux-avr32
Pull AVR32 updates from Hans-Christian Noren Egtvedt.

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/egtvedt/linux-avr32:
  mmc: atmel: get rid of struct mci_dma_data
  mmc: atmel-mci: restore dma on AVR32
  avr32: wire up missing syscalls
  avr32: wire up accept4 syscall
2016-01-18 12:50:55 -08:00
Linus Torvalds 48f58ba9cb Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull more networking fixes from David Miller:

 1) Fix brcmfmac build with older gcc, from Arend van Spriel.

 2) IRQ values unintentionally truncated to u8 in mlx5 driver, from
    Doron Tsur.

 3) Fix build warnings wrt tcp cgroup changes, from Geert Uytterhoeven.

 4) Limit deep recursion in ovs stack, from Hannes Frederic Sowa.

 5) at803x phy driver bug fixes from, Martin Blumenstingl.

 6) Fix TSO handling in hns driver, from Daode Huang

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (22 commits)
  ovs: limit ovs recursions in ovs_execute_actions to not corrupt stack
  team: Replace rcu_read_lock with a mutex in team_vlan_rx_kill_vid
  net: hns: bug fix about hisilicon TSO BD mode
  brcmfmac: fix BRCMF_FW_NVRAM_DEF macro for older gcc compilers
  net: phy: at803x: Add the interrupt register bit definitions
  net: phy: at803x: Clean up duplicate register definitions
  net: phy: at803x: Allow specifying the RGMII RX clock delay via phy mode
  net: phy: at803x: Don't set gbit features for the AR8030 phy
  arm64: bpf: add extra pass to handle faulty codegen
  arm64: insn: remove BUG_ON from codegen
  sctp: the temp asoc's transports should not be hashed/unhashed
  net/mlx5_core: Fix trimming down IRQ number
  tcp_memcontrol: Forward declare cgroup_subsys and mem_cgroup stucts
  batman-adv: Drop immediate orig_node free function
  batman-adv: Drop immediate batadv_hard_iface free function
  batman-adv: Drop immediate neigh_ifinfo free function
  batman-adv: Drop immediate batadv_hardif_neigh_node free function
  batman-adv: Drop immediate batadv_neigh_node free function
  batman-adv: Drop immediate batadv_orig_ifinfo free function
  batman-adv: Avoid recursive call_rcu for batadv_nc_node
  ...
2016-01-18 12:35:14 -08:00
Arnd Bergmann 6c54809977 ARM: debug-ll: fix BCM63xx entry for multiplatform
During my randconfig build testing, I found that a kernel with
DEBUG_AT91_UART and ARCH_BCM_63XX fails to build:

arch/arm/include/debug/at91.S:18:0: error: "CONFIG_DEBUG_UART_VIRT" redefined [-Werror]

It turns out that the DEBUG_UART_BCM63XX option is enabled whenever
the ARCH_BCM_63XX is, and that breaks multiplatform kernels because
we then end up using the UART address from BCM63XX rather than the
one we actually configured (if any).

This changes the BCM63XX options to only have one Kconfig option,
and only enable that if the user explicitly turns it on.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: b51312bebf ("ARM: BCM63XX: add low-level UART debug support")
Cc: stable@vger.kernel.org
2016-01-18 21:07:21 +01:00
Chris Metcalf 00d27c6336 numa: remove stale node_has_online_mem() define
This isn't used anywhere, so delete it.

Looks like the last usage (in x86-specific code) was removed by Tejun
in 2011 in commit bd6709a91a ("x86, NUMA: Make 32bit use common NUMA
init path").

Signed-off-by: Chris Metcalf <cmetcalf@ezchip.com>
2016-01-18 14:49:33 -05:00
Chris Metcalf 1bb50cad45 arch/tile: move user_exit() to early kernel entry sequence
This ensures that we always notify context tracking that we
have exited from user space no matter how we enter the kernel.
It is similar to how arm64 handles context tracking, for example.

This allows the removal of all the exception_enter() calls that
were added in commit 49e4e15619 ("tile: support CONTEXT_TRACKING and
thus NOHZ_FULL").

Signed-off-by: Chris Metcalf <cmetcalf@ezchip.com>
2016-01-18 14:49:30 -05:00