Semaphores are no longer performance-critical, so a generic C
implementation is better for maintainability, debuggability and
extensibility. Thanks to Peter Zijlstra for fixing the lockdep
warning. Thanks to Harvey Harrison for pointing out that the
unlikely() was unnecessary.
Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
This patch fixes misprints in ITE 8152 interrupt demuxing
Signed-off-by: Mike Rapoport <mike@compulab.co.il>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Ccoreutils and other have started using fstatat64. Thus, we
need a shim for it if we want to support modern oldabi
userlands (such as Debian/arm/lenny) with EABI kernels.
See http://bugs.debian.org/462677
Acked-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Riku Voipio <riku.voipio@movial.fi>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
fix signal return code when enable CONFIG_OABI_COMPAT
Signed-off-by: Janboe Ye <janboe.ye@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This patch adds the code required to register the F75375 device on the
GLAN Tank.
Signed-off-by: Gordon Farquharson <gordonfarquharson@gmail.com>
Acked-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Some bootloaders are disabling write buffer coalescing. Enable it back
under linux.
Signed-off-by: Arnaud Patard <arnaud.patard@rtp-net.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This patch changes the return value of omap_dma_chain_a_transfer
to 0 on success instead of the flag 'start_dma', which wasn't really useful
for anything.
Signed-off-by: Anand Gadiyar <gadiyar@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Although audio and dsp drivers are not integrated yet,
allow compiling in mailbox and mcbsp to see any build
warnings.
Signed-off-by: Tony Lindgren <tony@atomide.com>
GPIO IRQ unmask doesn't actually do anything useful. The problem is
hidden by a separate explicit mass unmask at the end of the chained
bank handler.
Signed-off-by: Kevin Hilman <khilman@mvista.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
One-shot mode was broken in MPU-timer support for OMAP1 due to a typo.
Also, ensure timer is stopped before changing the auto-reload flag.
The TRM says changing the AR flag when timer is running is undefined.
Also set GENERIC_CLOCKEVENTS for all omaps.
Signed-off-by: Tim Bird <tim.bird@am.sony.com>
Signed-off-by: Kevin Hilman <khilman@mvista.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
GPIO_MAX is the number of the last gpio, not the number of gpios. So
the bitmap must provide GPIO_MAX + 1 bits.
Signed-off-by: Uwe Kleine-König <Uwe.Kleine-Koenig@digi.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Correct GPIO pin assignment for the LCD power control (PCI)
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: David Brownell <david-b@pacbell.net>
Cc: Andrew Victor <linux@maxim.org.za>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
__FUNCTION__ is gcc-specific, use __func__
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Move the definitions of ATAG_CORE and ATAG_CORE_SIZE in head.S to
head-common.S. There is no use of these in head.S itself, but they
are used in head-common.S. When building for the !CONFIG_MMU case
these were not defined when compiling head-nommu.S (which includes
head-common.S).
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Remove false lockdep warnings about lock recursion when declaring
IRQs as being wake-capable, by marking putting GPIO irq_desc locks
into their own class.
(Thanks to Peter Zijlstra for helping track down such a small
fix to this problem.)
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Acked-by: Andrew Victor <linux@maxim.org.za>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
The DNS-323, Kurobox-Pro / Linkstation-Pro, QNAP TS-109/TS-209 and some
other orion-based systems have several bogus memory entries in the tag
table, which causes the system to crash at startup. Ignore them by
resetting the tag ID to 0 in a machine fixup function.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This allows monitoring compile issues with Kautobuild for
other omap1 boards until we have more board specific defconfig
files.
After 2.6.25, we can add a generic config_omap_generic16xx to
compile in support for all 16xx boards and then remove other
boards from OSK defconfig.
Signed-off-by: Tony Lindgren <tony@atomide.com>
Fix some spinlock issues reported by lockdep: since the gpio bank
locks can be aquired in both irq and non-irq contexts, they need
to be consistent about always using the irq-safe variants.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Build fix:
arch/arm/mach-omap1/pm.c: In function 'omap_pm_init':
arch/arm/mach-omap1/pm.c:720: warning: passing argument 2 of 'sysfs_create_file' from incompatible pointer type
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Tony Lindgren <tony@atomide.com>
H2 and H3 were broken on by e27a93a944,
which removed declarations for their tps6501x chips. This resolves
that issue for the H2. (Note that this patch *also* broke the isp1301
support on H2; it presumed a not-yet-merged new-style I2c driver.)
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Get rid of build warnings and errors in mainline for H3 boards; not
all the H3 updates were correct, it seems like the OMAP1 boards are
not getting proper build testing.
Also, commit e27a93a944 introduced a
regression related to the tps65013 chip.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Tony Lindgren <tony@atomide.com>
In mainline, the "old style" I2C registration was only removed for
OMAP2, leading to init-time bugs (regressions) like:
sysfs: duplicate filename 'i2c_omap.1' can not be created
------------[ cut here ]------------
WARNING: at fs/sysfs/dir.c:424 sysfs_add_one+0x40/0xd4()
Modules linked in:
... deletia ...
[<c0036a38>] (omap_init_i2c+0x0/0x50) from [<c000cea8>] (omap_init_devices+0x10/0x24)
r4:c001e000
[<c000ce98>] (omap_init_devices+0x0/0x24) from [<c0008684>] (do_initcalls+0x78/0x200)
... deletia ...
---[ end trace ca143223eefdc828 ]---
kobject_add_internal failed for i2c_omap.1 with -EEXIST, don't try to register things with the same name in the same directory.
The fix is obvious: remove the old init code, it's no longer needed.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Remove false lockdep warnings about lock recursion when declaring
IRQs as being wake-capable, by marking putting GPIO irq_desc locks
into their own class.
(Thanks to Peter Zijlstra for helping track down such a small
fix to this problem.)
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This makes parameter passing to DMA handlers uniform between non-chained
and chained transfers and makes debugging easier. Additional data like
chain_id can be always passed to handlers via callback data if needed.
Signed-off-by: Jarkko Nikula <jarkko.nikula@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Add CONFIG_HAVE_KRETPROBES to the arch/<arch>/Kconfig file for relevant
architectures with kprobes support. This facilitates easy handling of
in-kernel modules (like samples/kprobes/kretprobe_example.c) that depend on
kretprobes being present in the kernel.
Thanks to Sam Ravnborg for helping make the patch more lean.
Per Mathieu's suggestion, added CONFIG_KRETPROBES and fixed up dependencies.
Signed-off-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Acked-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Since 2f569af (CONFIG_HIGHPTE vs. sub-page page tables.) pte_free() calls
pte_lock_deinit() and dec_zone_page_state(). So free_pgd_slow must not call
the latter two when calling the first.
Signed-off-by: Uwe Kleine-König <Uwe.Kleine-Koenig@digi.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This is unnecessary since it is already protected by
spin_lock_irq{save, restore} in clock.c.
Signed-off-by: eric miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
"cat /dev/mem" may cause kernel Oops for boards with PHYS_OFFSET != 0
because character device is mapped to addresses starting from zero
and there is no protection against such situation.
Patch just add this.
Signed-off-by: Alexandre Rusev <arusev@ru.mvista.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Convert debug-only (and removed) MODULE_PARM() to module_param().
Compiles cleanly (with DEBUG=1).
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
On Wed, Feb 20, 2008 at 11:50:33AM +0100, Guennadi Liakhovetski wrote:
> arch/arm/kernel/atags.c uses for some reason the
> KEXEC_BOOT_PARAMS_SIZE macro, which is only defined if CONFIG_KEXEC
> is set. So, either this macro should be defined always, or another
> macro should be used, or ATAGS_PROC should depend on KEXEC.
As the procfs export of ATAGS is not meant as a stable, general purpose
ABI it shouldn't be an independent, general configuration option.
This patch make ATAGS_PROC depend on KEXEC
Signed-off-by: Uli Luckas <u.luckas@road.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Each call to i2c_get_adapter() must be followed by a call to
i2c_put_adapter() to release the grabbed reference. Otherwise the
reference count grows forever and the adapter can never be
unregistered.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Vladimir Ananiev <vovan888@gmail.com>
Acked-by: Tony Lindgren <tony@atomide.com>
The .get method is needed for suspend/resume. Otherwise you
get this in dmesg:
cpufreq: suspend failed to assert current frequency is what timing core thinks it is.
cpufreq: resume failed to assert current frequency is what timing core thinks it is.
Signed-off-by: Holger Schurig <hs4233@mail.mn-solutions.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
The QNAP TS-209 has its RTC interrupt on GPIO 3. Setup this
as an interrupt and pass it to the i2c_board_info.
Signed-off-by: Byron Bradley <byron.bbradley@gmail.com>
Acked-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Ensure that the clock lookup always finds an entry for a specific
device and ID before it falls back to finding just by ID. This
fixes a problem reported by Holger Schurig where the BTUART was
assigned the wrong clock.
Tested-by: Holger Schurig <hs4233@mail.mn-solutions.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: (30 commits)
[ARM] constify function pointer tables
[ARM] 4823/1: AT91 section fix
[ARM] 4824/1: pxa: clear RDH bit after any reset
[ARM] pxa: remove debugging PM: printk
ARM: OMAP1: Misc clean-up
ARM: OMAP1: Update defconfigs for omap1
ARM: OMAP1: Palm Tungsten E board clean-up
ARM: OMAP1: Use I2C bus registration helper for omap1
ARM: OMAP1: Remove omap_sram_idle()
ARM: OMAP1: PM fixes for OMAP1
ARM: OMAP1: Use MMC multislot structures for Siemens SX1 board
ARM: OMAP1: Make omap1 use MMC multislot structures
ARM: OMAP1: Change the comments to C style
ARM: OMAP1: Make omap1 boards to use omap_nand_platform_data
ARM: OMAP: Add helper module for board specific I2C bus registration
ARM: OMAP: Add dmtimer support for OMAP3
ARM: OMAP: Pre-3430 clean-up for dmtimer.c
ARM: OMAP: Add DMA support for chaining and 3430
ARM: OMAP: Add 24xx GPIO debounce support
ARM: OMAP: Get rid of unnecessary ifdefs in GPIO code
...
Matthew Wilcox