Commit Graph

109123 Commits

Author SHA1 Message Date
Vineet Gupta c10d6969b0 ARC: entry.S: Ensure that restore_regs is local to compilation unit
This fixes the possible link/relo errors, since restore_regs will be
provided by ISA code, but called from ARC common code.
The .L prefix reassures binutils that it will be in same compilation
unit.

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-06-19 18:09:37 +05:30
Vineet Gupta 4bf4564b27 ARC: entry.S: comments cleanup
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-06-19 18:09:37 +05:30
Vineet Gupta a8717d2808 ARC: entry.S: Trap handler to use r10 for syscall vs. brkpt decision
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-06-19 18:09:36 +05:30
Vineet Gupta 9b8c7d1e71 ARC: entry.S: FAKE_RET_FROM_EXCPN can always use r9
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-06-19 18:09:36 +05:30
Vineet Gupta a615b47dbf ARC: entry.S: confine EXCEPTION_* macros to one file
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-06-19 18:09:35 +05:30
Vineet Gupta f033737e77 ARC: entry.S: canonical'ize EXCEPTION_{PROLOGUE,EPILOGUE}
-EXCEPTION_EPILOGUE introduced
-EXCEPTION_PROLOGUE now also includes reg file saving

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-06-19 18:09:35 +05:30
Vineet Gupta 09f3b37e4e ARC: entry.S: Introduce INTERRUPT_{PROLOGUE,EPILOGUE}
-common'ize macros for level 1 and level 2 interrupts

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-06-19 18:09:34 +05:30
Vineet Gupta fbfa26ae3b ARC: entry.S: common'ize scrtach reg freeup in intr + exceptions
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-06-19 18:09:34 +05:30
Vineet Gupta 11e14896ea ARC: untangle cache flush loop
- Remove the ifdef'ery and write distinct versions for each mmu ver even
  if there is some code duplication

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-06-19 18:09:33 +05:30
Vineet Gupta 6c31068137 ARC: cacheflush: No need to retain DC_CTRL from __before_dc_op()
That is because __after_dc_op() already reads it for status check, so it
is better anyways to use that "newer" value.

Also reduces the clutter in callers for passing from/to these routines.

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-06-19 18:09:33 +05:30
Vineet Gupta 8ea2ddff41 ARC: cacheflush: move some code around, delete old comments
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-06-19 18:09:33 +05:30
Vineet Gupta 8362c389a4 ARC: mm/cache_arc700.c -> mm/cache.c
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-06-19 18:09:32 +05:30
Vineet Gupta db7e985526 ARC: [axs101] Add missing __init annotations
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-06-19 18:09:32 +05:30
Alexey Brodkin 7cacc5bf60 ARC: [axs101] STAR 9000799830: Fix SD cards support
As DW Mobile Storage databook says it's required to use "Hold Register"
if card is enumerated in SDR12 or SDR25 modes.
It means we need to act in the same way as in Altera's Socfpga
implementation - set "use hold reg" bit in commad.

Note that for upstream proper solution would be to remove
dw_mci_pltfm_prepare_command() at all and set the bit right in
dw_mci_prepare_command() for all platforms.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-06-19 18:09:31 +05:30
Vineet Gupta 749aa0e11a ARC: [axs101] Tweak DDR port aperture mappings for performance
Route all MB originated traffic to DDR Port 1 and keep Port 0 for CPU
traffic only

Basic system parameters
--------------------------------------------------------------------------------------
        Host                 OS Description 				Mhz  tlb   cache  mem   scal
                                                			    pages  line   par   load
                                                      				   bytes
----------------- ------------- --------------------------------------- ---- ----- ----- ------ ----
axs101-sd-2-new-f Linux 3.13.0+ axs101-sd-2-new-fw-old-img-rerun    	739  	8    32 1.1100    1
axs101-sd-3-arc-3 Linux 3.13.9+ axs101-sd-3-arc-3.13-tip-regression 	735  	8    32 1.1000    1
axs101-sd-9-diffe Linux 3.13.11 axs101-sd-9-different-tweak         	740  	8    32 1.0000    1

Processor, Processes - times in microseconds - smaller is better
------------------------------------------------------------------------------
Host                 OS  Mhz null null      open slct sig  sig  fork exec sh
                             call  I/O stat clos TCP  inst hndl proc proc proc
--------- ------------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ----
axs101-sd Linux 3.13.0+  739 0.50 0.88 5.38 14.6 34.1 0.92 5.18 2135 6555 12.K
axs101-sd Linux 3.13.9+  735 0.50 0.90 5.89 19.2 81.4 0.94 4.08 2560 8559 15.K
axs101-sd Linux 3.13.11  740 0.50 0.88 4.45 17.8 34.4 0.94 3.25 2052 6493 12.K
                                                 ^^^^                     ^^^^

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-06-19 18:09:31 +05:30
Vineet Gupta 8d0d56ba24 ARC: [axs101] support early 8250 uart
Earlycon calculates UART clock as "BASE_BAUD * 16". In case of ARC
"BASE_BAUD" is calculated dynamically in runtime, basically it is an
alias to arc_early_base_baud(), which in turn just does
"arc_base_baud/16".

8250 UART on AXS/SDP board uses 33.3MHz clock source which is set in
"arc_base_baud" with this change.

Additional compatibility string "snps,arc-sdp" is introduced as well
because there're different flavours of AXS boards but they all share the
same motherboard and so it's possible to re-use the same code for
motherbord even if CPU daughterboard changes.

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-06-19 18:09:30 +05:30
Alexey Brodkin 556cc1c5f5 ARC: [axs101] Add support for AXS101 SDP (software development platform)
The AXS10x platforms consist of a mainboard with peripherals,
on which several daughter cards can be placed. The daughter cards
typically contain a CPU and memory.

Signed-off-by: Mischa Jonker <mjonker@synopsys.com>
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-06-19 18:09:30 +05:30
Vineet Gupta 4db27dca60 ARC: mm: document system mem map clearly
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-06-19 18:09:29 +05:30
Vineet Gupta def32fad84 ARC: stack unwinder to bail if PC is not kernel mode
Currently, it doesn't invoke the callback but continues to unwind

Also while at it - simplify the code a bit

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-06-19 18:09:29 +05:30
Tobias Klauser 082ae1e157 ARC: perf: Remove unnecessary local variable
Directly return the result of perf_pmu_register() in
arc_pmu_device_probe() instead of assigning and returning variable ret.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-06-19 18:09:28 +05:30
Max Filippov 7002f77541 arc: fix use of uninitialized arc_pmu
static arc_pmu in the arch/arc/kernel/perf_event.c is not initialized as
it's shadowed by a local variable of the same name in the
arc_pmu_device_probe.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Fixes: 03c94fcf95 "ARC: perf: make @arc_pmu static global"
CC: <stable@vger.kernel.org>	# 4.1
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-06-19 18:09:28 +05:30
Vineet Gupta b27f739171 ARC: fix section mismatch with allyesconfig
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-06-19 18:09:27 +05:30
Vineet Gupta 036b2c5664 ARC: explicit'ify uboot support
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-06-19 18:09:27 +05:30
Vineet Gupta fd1557923b ARC: [plat_arcfpga]->[plat_sim]
* Remove remanants of legacy ARC FPGA platforms (AA4, ML509...)
* Only nsim simulation platform is left, rename platform accordingly
* AA4 DT stuff is compatible with nsim for ARC700 so rename it too

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-06-19 18:09:26 +05:30
Vineet Gupta 6623146cb7 ARC: [arcfpga] RIP legacy ISS based SMP extension
With ISS long unsupported, no point in having extension based on it

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-06-19 18:09:26 +05:30
Vineet Gupta 40b552d95a ARC: compress cpuinfo_arc_mmu (mainly save page size in KB)
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-06-19 18:09:25 +05:30
Vineet Gupta 5b9bd17840 ARC: clocksource cleanups
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-06-19 18:09:25 +05:30
Vineet Gupta 565a9b497c ARC: RIP broken 64bit RTSC
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-06-19 18:09:24 +05:30
Vineet Gupta 742f8af6cb ARC: [kbuild] Retire CONFIG_ARC_CPU_REL_4_10
Back when ARC700 4.10 was released, the related kernel features were
tied to this config item so they could be disabled in one shot (i.e.
LLOCK/SCOND, SWAPE, RTSC..)

That having happened a while back, all new ARC customers weill get 4.11+
so those features can be assumed to be present and need not be tied to a
top-level (we still retain the ability to individually disable them).

Further, since ARCv2 also shares some of those feautes, removing it
simplifies things a bit in Kconfig

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-06-19 18:09:24 +05:30
Vineet Gupta 454bfda9ac ARC: remove the unused platform helpers from dma mapping API
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-06-19 18:09:23 +05:30
Vineet Gupta 7c42eaf6c5 ARC: switch to simpler CROSS_COMPILE prefix
ARC GNU tools have had support for arc-linux-* driver for some time now.
This is functionally similar to arc-linux-uclibc-* but uclibc prefix
seemed weird at best when trying to compile the kernel itself.

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-05-19 11:27:13 +05:30
Vineet Gupta 4530949350 ARC: fold ___flush_dcache_page into __flush_dcache_page
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-05-19 11:27:13 +05:30
Vineet Gupta 1269f4d5c9 ARC: fix warning in sched due to thread_saved_pc()
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-05-19 11:27:13 +05:30
Linus Torvalds 518af3cb8c Merge branch 'master' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
Pull MIPS fixes from Ralf Baechle:
 "Seven small fixes.  The shortlog below is a good description so no
  need to elaborate.

  It has sat in linux-next and survived the usual automated testing by
  Imagination's test farm"

* 'master' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
  MIPS: tlb-r4k: Fix PG_ELPA comment
  MIPS: Fix up obsolete cpu_set usage
  MIPS: IP32: Fix build errors in reset code in DS1685 platform hook.
  MIPS: KVM: Fix unused variable build warning
  MIPS: traps: remove extra Tainted: line from __show_regs() output
  MIPS: Fix wrong CHECKFLAGS (sparse builds) with GCC 5.1
  MIPS: Fix a preemption issue with thread's FPU defaults
2015-05-16 15:46:30 -07:00
Linus Torvalds 2ed3d79564 ARC fixes for 4.1-rc4
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Merge tag 'arc-4.1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc

Pull ARC fixes from Vineet Gupta.

* tag 'arc-4.1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc:
  ARC: inline cache flush toggle helpers
  ARC: With earlycon in use, retire EARLY_PRINTK
  ARC: unbork !LLSC build
2015-05-16 15:40:07 -07:00
Linus Torvalds d661027066 ARM: SoC fixes for 4.1-rc3
Nothing frightening this time, just smaller fixes in a number of places.
 
 The other changes contained here are:
 
 MAINTAINERS file updates:
 - The mach-gemini maintainer is back in action and has a new git tree
 - Krzysztof Kozlowski has volunteered to be a new co-maintainer
   for the samsung platforms
 - updates to the files that belong to Marvell mvebu
 
 Bug fixes:
 - The largest changes are on omap2, but are only to avoid some
   harmless warnings and to fix reset on omap4
 - a small regression fix on tegra
 - multiple fixes for incorrect IRQ affinity on vexpress
 - the missing system controller on arm64 juno is added
 - one revert of a patch that was accidentally applied
   twice for mach-rockchip
 - two clock related DT fixes for mvebu
 - a workaround for suspend with old DT binaries on new
   exynos kernels
 - Another fix for suspend on exynos, needs to be backported.
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Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Arnd Bergmann:
 "Nothing frightening this time, just smaller fixes in a number of
  places.

  The other changes contained here are:

   MAINTAINERS file updates:

   - The mach-gemini maintainer is back in action and has a new git tree

   - Krzysztof Kozlowski has volunteered to be a new co-maintainer for
     the samsung platforms

   - updates to the files that belong to Marvell mvebu

  Bug fixes:

   - The largest changes are on omap2, but are only to avoid some
     harmless warnings and to fix reset on omap4

   - a small regression fix on tegra

   - multiple fixes for incorrect IRQ affinity on vexpress

   - the missing system controller on arm64 juno is added

   - one revert of a patch that was accidentally applied twice for
     mach-rockchip

   - two clock related DT fixes for mvebu

   - a workaround for suspend with old DT binaries on new exynos kernels

   - Another fix for suspend on exynos, needs to be backported"

* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (21 commits)
  MAINTAINERS: Add dts entries for some of the Marvell SoCs
  MAINTAINERS: ARM: EXYNOS: Add Krzysztof Kozlowski as co-maintainer
  ARM: EXYNOS: Use of_machine_is_compatible instead of soc_is_exynos4
  ARM: EXYNOS: Fix failed second suspend on Exynos4
  Revert "ARM: rockchip: fix undefined instruction of reset_ctrl_regs"
  ARM: EXYNOS: Fix dereference of ERR_PTR returned by of_genpd_get_from_provider
  ARM: EXYNOS: Don't try to initialize suspend on old DT
  ARM: dts: Add keep-power-in-suspend to WiFi SDIO node for Peach Boards
  ARM: gemini: fix compiler warning due wrong data type
  ARM: vexpress/tc2: Add interrupt-affinity to the PMU node
  ARM: vexpress/ca9: Add interrupt-affinity to the PMU node
  ARM: vexpress/ca9: Add unified-cache property to l2 cache node
  ARM64: juno: add sp810 support and fix sp804 clock frequency
  ARM: Gemini: Maintainers update
  ARM: OMAP2+: Remove bogus struct clk comparison for timer clock
  ARM: dove: Add clock-names to CuBox Si5351 clk generator
  ARM: AM33xx+: hwmod: re-use omap4 implementations for reset functionality
  ARM: OMAP4+: PRM: add support for passing status register/bit info to reset
  ARM: AM43xx: hwmod: add VPFE hwmod entries
  ARM: mvebu: Fix the main PLL frequency on Armada 375, 38x and 39x SoCs
  ...
2015-05-16 15:33:25 -07:00
Linus Torvalds 4b470f1208 Merge branch 'parisc-4.1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
Pull parisc fixes from Helge Deller:
 "One important patch which fixes crashes due to stack randomization on
  architectures where the stack grows upwards (currently parisc and
  metag only).

  This bug went unnoticed on parisc since kernel 3.14 where the flexible
  mmap memory layout support was added by commit 9dabf60dc4.  The
  changes in fs/exec.c are inside an #ifdef CONFIG_STACK_GROWSUP section
  and will not affect other platforms.

  The other two patches rename args of the kthread_arg() function and
  fixes a printk output"

* 'parisc-4.1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
  parisc,metag: Fix crashes due to stack randomization on stack-grows-upwards architectures
  parisc: copy_thread(): rename 'arg' argument to 'kthread_arg'
  parisc: %pf is only for function pointers
2015-05-15 13:06:06 -07:00
James Hogan e05cb56821 MIPS: tlb-r4k: Fix PG_ELPA comment
The ELPA bit in PageGrain is all about large *physical* addresses, so
correct the reference to "large virtual address" in the comment above
where it is set for MIPS64.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: David Daney <ddaney@caviumnetworks.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/10038/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-05-15 22:02:50 +02:00
Ezequiel Garcia 7363cb7de3 MIPS: Fix up obsolete cpu_set usage
cpu_set was removed (along with a bunch of cpumask helpers) by
commit 2f0f267ea0 ("cpumask: remove deprecated functions.").

Fix this by replacing cpu_set with cpumask_set_cpu. Without this
fix the following error is triggered when CONFIG_MIPS_MT_FPAFF=y.

  arch/mips/kernel/smp-cps.c: In function 'cps_smp_setup':
  arch/mips/kernel/smp-cps.c:95:3: error: implicit declaration of function 'cpu_set' [-Werror=implicit-function-declaration]

Fixes: 90db024f14 ("MIPS: smp-cps: cpu_set FPU mask if FPU present")
Signed-off-by: Ezequiel Garcia <ezequiel.garcia@imgtec.com>
Acked-by: Niklas Cassel <niklass@axis.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/9912/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-05-15 22:02:48 +02:00
Linus Torvalds be5e32fc2e Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 build fix from Ingo Molnar:
 "A bzImage build fix on older distros"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/vdso: Fix 'make bzImage' on older distros
2015-05-15 13:01:31 -07:00
Linus Torvalds ef4a293a44 Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fixes from Ingo Molnar:
 "Mostly tooling fixes, but also a lockdep annotation fix, a PMU event
  list fix and a new model addition"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  tools/liblockdep: Fix compilation error
  tools/liblockdep: Fix linker error in case of cross compile
  perf tools: Use getconf to determine number of online CPUs
  tools: Fix tools/vm build
  perf/x86/rapl: Enable Broadwell-U RAPL support
  perf/x86/intel: Fix SLM cache event list
  perf: Annotate inherited event ctx->mutex recursion
2015-05-15 12:38:21 -07:00
Arnd Bergmann 56523eefaa Samsung 2nd fixes for v4.1
- fix second S2R on exynos4412 based Trats2, Odroid U3 boards which
   happened after enabling L2$ and caused by commit 13cfa6c4f7 ("ARM:
   EXYNOS: Fix CPU idle clock down after CPU off")
   And replace the soc_is_exynosxxx() macro with of_compatible_xxx
 
 - fix dereference of ERR_PTR of of_genpd_get_from_provider()
 
 - fix suspend problem on old DT machines to skip the initialization
   suspend and caused by commit 8b283c0254 ("ARM: exynos4/5: convert
   pmu wakeup to stacked domains")
 
 - add keep-power-in-suspend for Peach Boards to support S2R and has
   been missed in previous pull-request for fixes
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Merge tag 'samsung-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into fixes

Merge "Samsung 2nd fixes for v4.1" from Kukjin Kim:

- fix second S2R on exynos4412 based Trats2, Odroid U3 boards which
  happened after enabling L2$ and caused by commit 13cfa6c4f7 ("ARM:
  EXYNOS: Fix CPU idle clock down after CPU off")
  And replace the soc_is_exynosxxx() macro with of_compatible_xxx

- fix dereference of ERR_PTR of of_genpd_get_from_provider()

- fix suspend problem on old DT machines to skip the initialization
  suspend and caused by commit 8b283c0254 ("ARM: exynos4/5: convert
  pmu wakeup to stacked domains")

- add keep-power-in-suspend for Peach Boards to support S2R and has
  been missed in previous pull-request for fixes

* tag 'samsung-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
  ARM: EXYNOS: Use of_machine_is_compatible instead of soc_is_exynos4
  ARM: EXYNOS: Fix failed second suspend on Exynos4
  ARM: EXYNOS: Fix dereference of ERR_PTR returned by of_genpd_get_from_provider
  ARM: EXYNOS: Don't try to initialize suspend on old DT
  ARM: dts: Add keep-power-in-suspend to WiFi SDIO node for Peach Boards
2015-05-15 17:14:48 +02:00
Arnd Bergmann cc1c1b5d21 mvebu fixes for 4.1 (part 2)
Fix the main PLL frequency on Armada 375, 38x and 39x SoCs
 Add clock-names to CuBox Si5351 clk generator
 Add dts entries in the MAINTAINERS file
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Merge tag 'mvebu-fixes-4.1-2' of git://git.infradead.org/linux-mvebu into fixes

Merge "mvebu fixes for 4.1 (part 2)" from Gregory CLEMENT:

Fix the main PLL frequency on Armada 375, 38x and 39x SoCs
Add clock-names to CuBox Si5351 clk generator
Add dts entries in the MAINTAINERS file

* tag 'mvebu-fixes-4.1-2' of git://git.infradead.org/linux-mvebu:
  MAINTAINERS: Add dts entries for some of the Marvell SoCs
  ARM: dove: Add clock-names to CuBox Si5351 clk generator
  ARM: mvebu: Fix the main PLL frequency on Armada 375, 38x and 39x SoCs
2015-05-15 17:13:06 +02:00
Linus Torvalds fc8c540b1d arm64 fixes:
- Fix potential memory leak in perf PMU probing
 - BPF sign extension fix for 64-bit immediates
 - Fix build failure with unusual configuration
 - Revert unused and broken branch patching from alternative code
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 fixes from Will Deacon:

 - fix potential memory leak in perf PMU probing

 - BPF sign extension fix for 64-bit immediates

 - fix build failure with unusual configuration

 - revert unused and broken branch patching from alternative code

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: perf: fix memory leak when probing PMU PPIs
  arm64: bpf: fix signedness bug in loading 64-bit immediate
  arm64: mm: Fix build error with CONFIG_SPARSEMEM_VMEMMAP disabled
  Revert "arm64: alternative: Allow immediate branch as alternative instruction"
2015-05-14 18:35:33 -07:00
Krzysztof Kozlowski c1f0ecff49 ARM: EXYNOS: Use of_machine_is_compatible instead of soc_is_exynos4
of_machine_is_compatible() seems to be preferred over soc_is_exynos4().

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Kukjin Kim <kgene@kernel.org>
2015-05-14 11:43:59 +09:00
Krzysztof Kozlowski 6f024978e7 ARM: EXYNOS: Fix failed second suspend on Exynos4
On Exynos4412 boards (Trats2, Odroid U3) after enabling L2 cache in
56b60b8bce ("ARM: 8265/1: dts: exynos4: Add nodes for L2 cache
controller") the second suspend to RAM failed. First suspend worked fine
but the next one hang just after powering down of secondary CPUs (system
consumed energy as it would be running but was not responsive).

The issue was caused by enabling delayed reset assertion for CPU0 just
after issuing power down of cores. This was introduced for Exynos4 in
13cfa6c4f7 ("ARM: EXYNOS: Fix CPU idle clock down after CPU off").

The whole behavior is not well documented but after checking with vendor
code this should be done like this (on Exynos4):
1. Enable delayed reset assertion when system is running (for all CPUs).
2. Disable delayed reset assertion before suspending the system.
   This can be done after powering off secondary CPUs.
3. Re-enable the delayed reset assertion when system is resumed.

Fixes: 13cfa6c4f7 ("ARM: EXYNOS: Fix CPU idle clock down after CPU off")
Cc: <stable@vger.kernel.org>
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Tested-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Tested-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Kukjin Kim <kgene@kernel.org>
2015-05-14 11:32:18 +09:00
Arnd Bergmann 6c28ab9fef The previous two suspend related fixes both fix the same issue
so only one of them (the newer one) is actually needed.
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Merge tag 'v4.1-rockchip-socfixes2' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip into fixes

The previous two suspend related fixes both fix the same issue
so only one of them (the newer one) is actually needed.

* tag 'v4.1-rockchip-socfixes2' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip:
  Revert "ARM: rockchip: fix undefined instruction of reset_ctrl_regs"
2015-05-13 16:17:33 +02:00
Heiko Stuebner 3f937cf3db Revert "ARM: rockchip: fix undefined instruction of reset_ctrl_regs"
This reverts commit b403125d3b.

As reported by Chris, both commits
        b403125 "ARM: rockchip: fix undefined instruction of reset_ctrl_regs"
        0ea001d "ARM: rockchip: disable dapswjdp during suspend"
actually fix the same issue and b403125 is the older one, which got
superseded by 0ea001d. Therefore revert the obsolete one again.

Reported-by: Chris Zhong <zyw@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2015-05-13 15:47:03 +02:00
Krzysztof Kozlowski 0b7dc0ff95 ARM: EXYNOS: Fix dereference of ERR_PTR returned by of_genpd_get_from_provider
ERR_PTR was dereferenced during sub domain parsing, if parent domain
could not be obtained (because of invalid phandle or deferred
registration of parent domain).

The Exynos power domain code checked whether
of_genpd_get_from_provider() returned NULL and in that case it skipped
that power domain node. However this function returns ERR_PTR or valid
pointer, not NULL.

Fixes: 0f7807518f ("ARM: EXYNOS: add support for sub-power domains")
Cc: <stable@vger.kernel.org>	[4.0+]
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Kukjin Kim <kgene@kernel.org>
2015-05-13 17:45:52 +09:00
Linus Torvalds 110bc76729 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller:

 1) Handle max TX power properly wrt VIFs and the MAC in iwlwifi, from
    Avri Altman.

 2) Use the correct FW API for scan completions in iwlwifi, from Avraham
    Stern.

 3) FW monitor in iwlwifi accidently uses unmapped memory, fix from Liad
    Kaufman.

 4) rhashtable conversion of mac80211 station table was buggy, the
    virtual interface was not taken into account.  Fix from Johannes
    Berg.

 5) Fix deadlock in rtlwifi by not using a zero timeout for
    usb_control_msg(), from Larry Finger.

 6) Update reordering state before calculating loss detection, from
    Yuchung Cheng.

 7) Fix off by one in bluetooth firmward parsing, from Dan Carpenter.

 8) Fix extended frame handling in xiling_can driver, from Jeppe
    Ledet-Pedersen.

 9) Fix CODEL packet scheduler behavior in the presence of TSO packets,
    from Eric Dumazet.

10) Fix NAPI budget testing in fm10k driver, from Alexander Duyck.

11) macvlan needs to propagate promisc settings down the the lower
    device, from Vlad Yasevich.

12) igb driver can oops when changing number of rings, from Toshiaki
    Makita.

13) Source specific default routes not handled properly in ipv6, from
    Markus Stenberg.

14) Use after free in tc_ctl_tfilter(), from WANG Cong.

15) Use softirq spinlocking in netxen driver, from Tony Camuso.

16) Two ARM bpf JIT fixes from Nicolas Schichan.

17) Handle MSG_DONTWAIT properly in ring based AF_PACKET sends, from
    Mathias Kretschmer.

18) Fix x86 bpf JIT implementation of FROM_{BE16,LE16,LE32}, from Alexei
    Starovoitov.

19) ll_temac driver DMA maps TX packet header with incorrect length, fix
    from Michal Simek.

20) We removed pm_qos bits from netdevice.h, but some indirect
    references remained.  Kill them.  From David Ahern.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (90 commits)
  net: Remove remaining remnants of pm_qos from netdevice.h
  e1000e: Add pm_qos header
  net: phy: micrel: Fix regression in kszphy_probe
  net: ll_temac: Fix DMA map size bug
  x86: bpf_jit: fix FROM_BE16 and FROM_LE16/32 instructions
  netns: return RTM_NEWNSID instead of RTM_GETNSID on a get
  Update be2net maintainers' email addresses
  net_sched: gred: use correct backlog value in WRED mode
  pppoe: drop pppoe device in pppoe_unbind_sock_work
  net: qca_spi: Fix possible race during probe
  net: mdio-gpio: Allow for unspecified bus id
  af_packet / TX_RING not fully non-blocking (w/ MSG_DONTWAIT).
  bnx2x: limit fw delay in kdump to 5s after boot
  ARM: net: delegate filter to kernel interpreter when imm_offset() return value can't fit into 12bits.
  ARM: net fix emit_udiv() for BPF_ALU | BPF_DIV | BPF_K intruction.
  mpls: Change reserved label names to be consistent with netbsd
  usbnet: avoid integer overflow in start_xmit
  netxen_nic: use spin_[un]lock_bh around tx_clean_lock (2)
  net: xgene_enet: Set hardware dependency
  net: amd-xgbe: Add hardware dependency
  ...
2015-05-12 21:10:38 -07:00