Commit graph

18873 commits

Author SHA1 Message Date
Catalin Marinas
0ec8e7aa8f ARM: 7416/1: LPAE: Remove unused L_PTE_(BUFFERABLE|CACHEABLE) macros
These have already been removed from the classic MMU in favour of
L_PTE_MT_* macros.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-05-12 14:38:21 +01:00
Nicolas Pitre
dc457078d4 ARM: 7415/1: vfp: convert printk's to pr_*'s
This is mainly to get rid of the "vfp_pm_suspend: saving vfp state"
message flooding the kernel message ring by default.

Signed-off-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-05-11 22:21:33 +01:00
Russell King
1fdc08abfa ARM: decompressor: avoid speculative prefetch from non-RAM areas
We setup identity MMU mappings across the entire 4GB of space, which
are permissionless because the domain is set to manager.

This unfortunately allows ARMv6 and later CPUs to speculatively
prefetch from the entire address space, which can cause undesirable
side effects if those regions contain devices.

As we setup the mappings with read/write permission, we can switch
the domain to client mode, and then use the XN bit for ARMv6 and
above to control speculative prefetch to non-RAM areas.

Reported-by: R Sricharan <r.sricharan@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-05-10 09:48:34 +01:00
Marc Zyngier
bd0493eaaf ARM: 7413/1: move read_{boot,persistent}_clock to the architecture level
At the moment, read_persistent_clock is implemented at the
platform level, which makes it impossible to compile these
platforms in a single kernel.

Implement these two functions at the architecture level, and
provide a thin registration interface for both read_boot_clock
and read_persistent_clock. The two affected platforms (OMAP and
Tegra) are converted at the same time.

Reported-by: Jeff Ohlstein <johlstei@codeaurora.org>
Tested-by: Stephen Warren <swarren@wwwdotorg.org>
Tested-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-05-06 11:09:21 +01:00
Nicolas Pitre
f67860a76f ARM: 7363/1: DEBUG_LL: limit early mapping to the minimum
There is just no point mapping up to 512MB for a serial port.
Using a single 1MB entry is way sufficient for all users.
This will create less interference for the following debugging patch.

Signed-off-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-05-04 16:56:46 +01:00
Will Deacon
c5102f5935 ARM: 7408/1: cacheflush: return error to userspace when flushing syscall fails
The cacheflush syscall can fail for two reasons:

(1) The arguments are invalid (nonsensical address range or no VMA)

(2) The region generates a translation fault on a VIPT or PIPT cache

This patch allows do_cache_op to return an error code to userspace in
the case of the above. The various coherent_user_range implementations
are modified to return 0 in the case of VIVT caches or -EFAULT in the
case of an abort on v6/v7 cores.

Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-05-02 11:12:49 +01:00
Dima Zavin
435a7ef52d ARM: 7409/1: Do not call flush_cache_user_range with mmap_sem held
We can't be holding the mmap_sem while calling flush_cache_user_range
because the flush can fault. If we fault on a user address, the
page fault handler will try to take mmap_sem again. Since both places
acquire the read lock, most of the time it succeeds. However, if another
thread tries to acquire the write lock on the mmap_sem (e.g. mmap) in
between the call to flush_cache_user_range and the fault, the down_read
in do_page_fault will deadlock.

[will: removed drop of vma parameter as already queued by rmk (7365/1)]

Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Dima Zavin <dima@android.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-05-02 11:12:27 +01:00
Will Deacon
3e0f5a15f5 ARM: 7404/1: cmpxchg64: use atomic64 and local64 routines for cmpxchg64
The cmpxchg64 routines for ARMv6+ CPUs replicate inline assembly that
already exists for atomic64 operations. Furthermore, the cmpxchg64 code
uses the "memory" constraint in the clobber list rather than identifying
the region of memory that is actually modified.

This patch replaces the ARMv6+ cmpxchg64 code with macros that expand to
the atomic64_ and local64_ variants, casting the pointer parameter to
the appropriate container type.

Cc: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-04-28 17:32:44 +01:00
Will Deacon
0bd82adee3 ARM: 7347/1: SCU: use cpu_logical_map for per-CPU low power mode
scu_power_mode changes the power mode for the current CPU, which it
determines from smp_processor_id(). However, this assumes that the
physical CPU number is equal to Linux's logical CPU number and if this
is not true, we will power off the wrong CPU.

This patch uses cpu_logical_map to translate the logical CPU number
into a physical one in scu_power_mode.

Reported-by: Lorenzo Pieralisi <Lorenzo.Pieralisi@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-04-28 17:31:37 +01:00
Wade Farnsworth
0693bf6814 ARM: 7374/1: add TRACEHOOK support
Add calls to tracehook_report_syscall_{entry,exit} and tracehook_signal_handler

Signed-off-by: Steven Walter <stevenrwalter@gmail.com>
Signed-off-by: Wade Farnsworth <wade_farnsworth@mentor.com>
Reviewed-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-04-25 19:49:28 +01:00
Wade Farnsworth
bf2c9f9866 ARM: 7373/1: add support for the generic syscall.h interface
Supplying the asm-generic/syscall.h interface is a
pre-requisite for HAVE_ARCH_TRACEHOOK

Signed-off-by: Steven Walter <stevenrwalter@gmail.com>
Signed-off-by: Wade Farnsworth <wade_farnsworth@mentor.com>
Reviewed-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-04-25 19:49:27 +01:00
Jonathan Austin
58834eecde ARM: 7385/1: ThumbEE: Use cpuid macros to read ID_PFR0 for ThumbEE
The ThumbEE probe code uses inline assembly to read ID_PFR0 in order to
detect whether ThumbEE is implemented by the processor.

This patch replaces the inline asm with the read_cpuid_ext macro.

Reviewed-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Jonathan Austin <jonathan.austin@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-04-25 19:49:26 +01:00
Linus Walleij
ce94df9c09 ARM: 7395/1: VIC: use the domain mapping function to assign handlers
This removes the internal functions for assigning IRQ
handlers to each interrupt in favor of using the internal
map iterator in the irq domain code.

Cc: Will Deacon <will.deacon@arm.com>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: Rob Herring <rob.herring@calxeda.com>
Acked-by: Jamie Iles <jamie@jamieiles.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-04-25 12:57:07 +01:00
Linus Walleij
fa943bed68 ARM: 7394/1: VIC: respect list of valid sources
The current IRQ domain implementation in the VIC allocates 32
interrupts for each VIC instance no matter whether the
controller actually use all the IRQs or not. Alter this so
we only allocate a domain up until the last IRQ marked valid.

Cc: Will Deacon <will.deacon@arm.com>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: Rob Herring <rob.herring@calxeda.com>
Acked-by: Jamie Iles <jamie@jamieiles.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-04-25 12:57:07 +01:00
Russell King
98fab064d3 ARM: Remove unnecessary selection of TICK_ONESHOT
In 3872c48b (tick: Document TICK_ONESHOT config option) Thomas describes
the circumstances under which TICK_ONESHOT should be selected.  This is
an internal time keeping configuration symbol which should not be
selected by platform or arch code.  So remove our select statements for
it.

This kills these warnings in OMAP builds:

kernel/time/tick-sched.c:47: warning: 'tick_do_update_jiffies64' defined but not used
kernel/time/tick-sched.c:89: warning: 'tick_init_jiffy_update' defined but not used

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-04-25 12:53:10 +01:00
Stephen Boyd
37e74beb8a ARM: 7388/1: Kconfig: Remove duplicate IRQ Kconfig entries
These kconfig entries are already defined in kernel/irq/Kconfig
so select them instead of redefining them.

Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-04-19 19:33:23 +01:00
Dima Zavin
4542b6a0fa ARM: 7365/1: drop unused parameter from flush_cache_user_range
vma isn't used and flush_cache_user_range isn't a standard macro that
is used on several archs with the same prototype. In fact only unicore32
has a macro with the same name (with an identical implementation and no
in-tree users).

This is a part of a patch proposed by Dima Zavin (with Message-id:
1272439931-12795-1-git-send-email-dima@android.com) that didn't get
accepted.

Cc: Dima Zavin <dima@android.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-04-19 19:32:50 +01:00
Linus Torvalds
9a8e5d4112 Merge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm
Pull ARM fixes from Russell King:
 "Nothing too disasterous, the biggest thing being the removal of the
  regulator support for vcore in the AMBA driver; only one SoC was using
  this and it got broken during the last merge window, which then
  started causing problems for other people.  Mutual agreement was
  reached for it to be removed."

* 'fixes' of git://git.linaro.org/people/rmk/linux-arm:
  ARM: 7386/1: jump_label: fixup for rename to static_key
  ARM: 7384/1: ThumbEE: Disable userspace TEEHBR access for !CONFIG_ARM_THUMBEE
  ARM: 7382/1: mm: truncate memory banks to fit in 4GB space for classic MMU
  ARM: 7359/2: smp_twd: Only wait for reprogramming on active cpus
  ARM: 7383/1: nommu: populate vectors page from paging_init
  ARM: 7381/1: nommu: fix typo in mm/Kconfig
  ARM: 7380/1: DT: do not add a zero-sized memory property
  ARM: 7379/1: DT: fix atags_to_fdt() second call site
  ARM: 7366/3: amba: Remove AMBA level regulator support
  ARM: 7377/1: vic: re-read status register before dispatching each IRQ handler
  ARM: 7368/1: fault.c: correct how the tsk->[maj|min]_flt gets incremented
2012-04-15 17:35:19 -07:00
Rabin Vincent
708e5978df ARM: 7386/1: jump_label: fixup for rename to static_key
c5905afb0 ("static keys: Introduce 'struct static_key'...") renamed
struct jump_label_key to struct static_key.  Fixup ARM for this to
eliminate these build warnings:

  include/linux/jump_label.h:113:2:
  warning: passing argument 1 of 'arch_static_branch' from incompatible pointer type
  include/asm/jump_label.h:17:82:
  note: expected 'struct jump_label_key *' but argument is of type 'struct static_key *'

Signed-off-by: Rabin Vincent <rabin@rab.in>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-04-15 22:00:31 +01:00
Jonathan Austin
078c04545b ARM: 7384/1: ThumbEE: Disable userspace TEEHBR access for !CONFIG_ARM_THUMBEE
Currently when ThumbEE is not enabled (!CONFIG_ARM_THUMBEE) the ThumbEE
register states are not saved/restored at context switch. The default state
of the ThumbEE Ctrl register (TEECR) allows userspace accesses to the
ThumbEE Base Handler register (TEEHBR). This can cause unexpected behaviour
when people use ThumbEE on !CONFIG_ARM_THUMBEE kernels, as well as allowing
covert communication - eg between userspace tasks running inside chroot
jails.

This patch sets up TEECR in order to prevent user-space access to TEEHBR
when !CONFIG_ARM_THUMBEE. In this case, tasks are sent SIGILL if they try to
access TEEHBR.

Cc: stable@vger.kernel.org
Reviewed-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Jonathan Austin <jonathan.austin@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-04-15 22:00:31 +01:00
Will Deacon
e5ab858008 ARM: 7382/1: mm: truncate memory banks to fit in 4GB space for classic MMU
If a bank of memory spanning the 4GB boundary is added on a !CONFIG_LPAE
kernel then we will hang early during boot since the memory bank will
have wrapped around to zero.

This patch truncates memory banks for !LPAE configurations when the end
address is not representable in 32 bits.

Acked-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-04-15 22:00:30 +01:00
Linus Walleij
9f85550347 ARM: 7359/2: smp_twd: Only wait for reprogramming on active cpus
During booting of cpu1, there is a short window where cpu1
is online, but not active where cpu1 is occupied by waiting
to become active. If cpu0 then decides to schedule something
on cpu1 and wait for it to complete, before cpu0 has set
cpu1 active, we have a deadlock.

Typically it's this CPU frequency transition that happens at
this time, so let's just not wait for it to happen, it will
happen whenever the CPU eventually comes online instead.

Cc: Peter Zijlstra <peterz@infradead.org>
Cc: stable@kernel.org
Signed-off-by: Jonas Aaberg <jonas.aberg@stericsson.com>
Reviewed-by: Rickard Andersson <rickard.andersson@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-04-15 22:00:29 +01:00
Olof Johansson
961a238c38 Merge branch 'v3.4-samsung-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into fixes
* 'v3.4-samsung-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
  ARM: EXYNOS: Fix Kconfig dependencies for device tree enabled machine files
  ARM: EXYNOS: Remove broken config values for touchscren for NURI board
  ARM: EXYNOS: set fix xusbxti clock for NURI and Universal210 boards
  ARM: EXYNOS: fix regulator name for NURI board
  ARM: SAMSUNG: make SAMSUNG_PM_DEBUG select DEBUG_LL
  ARM: EXYNOS: Add PDMA and MDMA physical base address defines
  ARM: S5PV210: Fix compiler warning in dma.c file
  ARM: EXYNOS: Fix compile error in exynos5250-cpufreq.c
  ARM: EXYNOS: Add missing definition for IRQ_I2S0
  ARM: S5PV210: fix unused LDO supply field from wm8994_pdata
2012-04-14 17:50:45 -07:00
Kevin Hilman
47d9e44d1d ARM: OMAP: clock: cleanup CPUfreq leftovers, fix build errors
Now that we have OPP layer, and OMAP CPUfreq driver is using it, we no
longer need/use the clock framework code for filling up CPUfreq
tables.  Remove it.

Removing this code also eliminates build errors when CPU_FREQ_TABLE
support is not enabled.

Thanks to Russell King for pointing out the parts I missed under
plat-omap in the original version and also pointing out the build
errors when CPUFREQ_TABLE support was not enabled.

Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Kevin Hilman <khilman@ti.com>
Acked-by: Paul Walmsley <paul@pwsan.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
2012-04-14 17:49:07 -07:00
Rob Herring
eb03f28002 ARM: dts: remove blank interrupt-parent properties
These were incorrectly introduced and can cause problems for of_irq_init.

The correct way to define a root controller is no interrupt-parent set at
all or the interrupt-parent is set to the root controller itself when
inherited from a parent node.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Tested-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
2012-04-14 17:46:46 -07:00
Sachin Kamat
5ad14306a3 ARM: EXYNOS: Fix Kconfig dependencies for device tree enabled machine files
Add config dependency for Exynos4 and Exynos5 device tree enabled machine
files on config options ARCH_EXYNOS4 and ARCH_EXYNOS5 respectively.
Enabling machine support without proper ARCH support enabled is incorrect.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2012-04-14 07:53:51 -07:00
Marek Szyprowski
5262c54331 ARM: EXYNOS: Remove broken config values for touchscren for NURI board
The atmel_mxt_ts driver has been extended to support more 'configuration
objects' in commit 81c88a711 ("Input: atmel_mxt_ts - update object list"),
what broke the configuration values for NURI board. These values are
optional anyway, so remove them to get the driver working correctly.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2012-04-14 07:42:26 -07:00
Marek Szyprowski
3d3231b1c9 ARM: EXYNOS: set fix xusbxti clock for NURI and Universal210 boards
On some versions of NURI and UniversalC210 boards, camera clocks are
routed directly to xusbxti clock source. This patch sets the correct
value for this clock to let usb and camera sensors to work correctly and
avoid division by zero on driver's probe.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2012-04-14 07:42:25 -07:00
Marek Szyprowski
f441f8a0a1 ARM: EXYNOS: fix regulator name for NURI board
Regulator names should not contain slash to avoid issues with debugfs.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2012-04-14 07:42:25 -07:00
Maurus Cuelenaere
3cd21f6162 ARM: SAMSUNG: make SAMSUNG_PM_DEBUG select DEBUG_LL
When selecting SAMSUNG_PM_DEBUG, it complains about a missing printascii()
function if you do not select DEBUG_LL, so make the former select the latter.

Signed-off-by: Maurus Cuelenaere <mcuelenaere@gmail.com>
Acked-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2012-04-14 07:42:24 -07:00
David Brown
af33eadc73 ARM: msm: Fix section mismatches in proc_comm.c
The change
    commit 4416e9eb0b
    Author: Gregory Bean <gbean@codeaurora.org>
    Date:   Wed Jul 28 10:22:12 2010 -0700

        arm: msm: Fix section mismatch in smd.c.

fixes a section mismatch between the board file and the smd driver's
probe function, however, it misses the additional mismatches between
the probe function and some routines it calls.  Fix these up as well.

Signed-off-by: David Brown <davidb@codeaurora.org>
2012-04-13 10:23:17 -07:00
Daniel Walker
204241c27c arm: msm: trout: fix compile failure
Fixes the following warnings,

arch/arm/mach-msm/board-trout.c: In function 'trout_init':
arch/arm/mach-msm/board-trout.c:71: error: 'system_rev' undeclared (first use in this function)
arch/arm/mach-msm/board-trout.c:71: error: (Each undeclared identifier is reported only once
arch/arm/mach-msm/board-trout.c:71: error: for each function it appears in.)

and

arch/arm/mach-msm/board-trout-panel.c: In function 'trout_init_panel':
arch/arm/mach-msm/board-trout-panel.c:267: error: 'system_rev' undeclared (first use in this function)
arch/arm/mach-msm/board-trout-panel.c:267: error: (Each undeclared identifier is reported only once
arch/arm/mach-msm/board-trout-panel.c:267: error: for each function it appears in.)

This came in with the following commit 9f97da78bf
which removes asm/system.h

Signed-off-by: Daniel Walker <dwalker@fifo99.com>
cc: David Howells <dhowells@redhat.com>
cc: Bryan Huntsman <bryanh@codeaurora.org>
cc: linux-arm-msm@vger.kernel.org
cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: David Brown <davidb@codeaurora.org>
2012-04-13 10:23:16 -07:00
Daniel Walker
1c07ae43bb arm: msm: halibut: remove unneeded fixup
This old fixup causes a build failure, so I remove it just like in
trout.

Signed-off-by: Daniel Walker <dwalker@fifo99.com>
Signed-off-by: David Brown <davidb@codeaurora.org>
2012-04-13 10:23:16 -07:00
Will Deacon
6b8e5c912f ARM: 7383/1: nommu: populate vectors page from paging_init
Commit 94e5a85b ("ARM: earlier initialization of vectors page") made it
the responsibility of paging_init to initialise the vectors page.

This patch adds a call to early_trap_init for the !CONFIG_MMU case,
placing the vectors at CONFIG_VECTORS_BASE.

Cc: Jonathan Austin <jonathan.austin@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-04-13 14:05:42 +01:00
Will Deacon
9b7333a9c1 ARM: 7381/1: nommu: fix typo in mm/Kconfig
The description for the CPU_HIGH_VECTOR Kconfig option for nommu builds
doesn't make any sense.

This patch fixes up the trivial grammatical error.

Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-04-13 14:05:41 +01:00
Marc Zyngier
a106b21a35 ARM: 7380/1: DT: do not add a zero-sized memory property
Some bootloaders are broken enough to expose an ATAG_MEM with
a null size. Converting such tag to a memory node leads to
an unbootable system.

Skip over zero sized ATAG_MEM to avoid this situation.

Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-04-13 14:05:41 +01:00
Marc Zyngier
9c5fd9e85f ARM: 7379/1: DT: fix atags_to_fdt() second call site
atags_to_fdt() returns 1 when it fails to find a valid FDT signature.
The CONFIG_ARM_ATAG_DTB_COMPAT code is supposed to retry with another
location, but only does so when the initial call doesn't fail.

Fix this by using the correct condition in the assembly code.

Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Cc: stable@vger.kernel.org
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-04-13 14:05:41 +01:00
Thomas Abraham
60806225cd ARM: EXYNOS: Add PDMA and MDMA physical base address defines
Add PDMA and MDMA physical base address macros which is
require for EXYNOS5 of_dev_auxdata setup.

Signed-off-by: Thomas Abraham <thomas.ab@samsung.com>
[kgene.kim@samsung.com: changed dma channel fo mdma1]
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2012-04-10 08:41:35 -07:00
Sachin Kamat
6e7beb7ec8 ARM: S5PV210: Fix compiler warning in dma.c file
Fixes the following warning:

warning: 'dma_dmamask' defined but not used [-Wunused-variable]

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2012-04-10 08:40:19 -07:00
Will Deacon
34af657916 ARM: 7377/1: vic: re-read status register before dispatching each IRQ handler
handle_IRQ may briefly cause interrupts to be re-enabled during soft IRQ
processing on the exit path, leading to nested handling of VIC interrupts.

Since the current code does not re-read the VIC_IRQ_STATUS register, this
can lead to multiple invocations of the same interrupt handler and
spurious interrupts to be reported.

This patch changes the VIC interrupt dispatching code to re-read the
status register each time, avoiding duplicate invocations of the same
handler.

Acked-and-Tested-by: H Hartley Sweeten <hsweeten@visionengravers.com>

Reviewed-by: Jamie Iles <jamie@jamieiles.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-04-10 09:27:42 +01:00
Kautuk Consul
dff2aa7af8 ARM: 7368/1: fault.c: correct how the tsk->[maj|min]_flt gets incremented
commit 8878a539ff was done by me
to make the page fault handler retryable as well as interruptible.

Due to this commit, there is a mistake in the way in which
tsk->[maj|min]_flt counter gets incremented for VM_FAULT_ERROR:
If VM_FAULT_ERROR is returned in the fault flags by handle_mm_fault,
then either maj_flt or min_flt will get incremented. This is wrong
as in the case of a VM_FAULT_ERROR we need to be skip ahead to the
error handling code in do_page_fault.

Added a check after the call to __do_page_fault() to check for
(fault & VM_FAULT_ERROR).

Signed-off-by: Kautuk Consul <consul.kautuk@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-04-10 09:27:42 +01:00
Jonghwan Choi
32db797f10 ARM: EXYNOS: Fix compile error in exynos5250-cpufreq.c
This patch is omitted in v2 patch of Jaecheol Lee.

drivers/cpufreq/exynos5250-cpufreq.c: In function 'set_clkdiv':
drivers/cpufreq/exynos5250-cpufreq.c:144: error: 'EXYNOS5_CLKDIV_STATCPU0' undeclared (first use in this function)
drivers/cpufreq/exynos5250-cpufreq.c:144: error: (Each undeclared identifier is reported only once
drivers/cpufreq/exynos5250-cpufreq.c:144: error: for each function it appears in.)
drivers/cpufreq/exynos5250-cpufreq.c:150: error: 'EXYNOS5_CLKDIV_CPU1' undeclared (first use in this function)
drivers/cpufreq/exynos5250-cpufreq.c:152: error: 'EXYNOS5_CLKDIV_STATCPU1' undeclared (first use in this function)
drivers/cpufreq/exynos5250-cpufreq.c: In function 'set_apll':
drivers/cpufreq/exynos5250-cpufreq.c:166: error: 'EXYNOS5_CLKMUX_STATCPU' undeclared (first use in this function)
drivers/cpufreq/exynos5250-cpufreq.c:173: error: 'EXYNOS5_APLL_LOCK' undeclared (first use in this function)
drivers/cpufreq/exynos5250-cpufreq.c: In function 'exynos5250_cpufreq_init':
drivers/cpufreq/exynos5250-cpufreq.c:312: error: 'EXYNOS5_CLKDIV_CPU1' undeclared (first use in this function)

Cc: Jaecheol Lee <jc.lee@samsung.com>
Signed-off-by: Jonghwan Choi <jhbird.choi@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2012-04-08 17:14:53 -07:00
Tushar Behera
0d923490f7 ARM: EXYNOS: Add missing definition for IRQ_I2S0
This fixes following build error when sound support is selected
on EXYNOS4 platform.

sound/soc/samsung/idma.c: In function ‘idma_close’:
sound/soc/samsung/idma.c:327:11: error: ‘IRQ_I2S0’ undeclared (first use in this function)

Signed-off-by: Tushar Behera <tushar.behera@linaro.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2012-04-08 17:14:52 -07:00
Kukjin Kim
7049932920 ARM: S5PV210: fix unused LDO supply field from wm8994_pdata
According to commit 719a4240("mfd: Remove unused LDO supply field
from WM8994 pdata"), the LDO supply field should be removed from
the initializer.

Cc: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2012-04-08 17:14:52 -07:00
Linus Torvalds
314489bd4c ARM: SoC fixes for 3.4-rc2
A bunch of fixes for regressions (and a few other problems) in 3.4-rc1:
 
 * Fix for regression of mach/io.h cleanup on platforms with PCI or PCMCIA
   (adding back the include file on those for now)
 * AT91 fixes for usb and spi
 * smsc911x ethernet fixes for i.MX
 * smsc911x fixes for OMAP
 * gpio fixes for Tegra
 * A handful of build error and warning fixes for various platforms
 * cpufreq kconfig dependencies, build and lowlevel debug fixes for
   Samsung platforms
 
 In other words, more or less the regular collection of -rc1/2 type
 material. A few of them, in particular the smsc911x for OMAP series, aren't
 technically regressions for 3.4, but they're valid fixes and we're still
 relatively early in the rc cycle so it seems appropriate to include them.
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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 Olof Johansson:
 "A bunch of fixes for regressions (and a few other problems) in
  3.4-rc1:

 - Fix for regression of mach/io.h cleanup on platforms with PCI or
   PCMCIA (adding back the include file on those for now)
 - AT91 fixes for usb and spi
 - smsc911x ethernet fixes for i.MX
 - smsc911x fixes for OMAP
 - gpio fixes for Tegra
 - A handful of build error and warning fixes for various platforms
 - cpufreq kconfig dependencies, build and lowlevel debug fixes for
   Samsung platforms

  In other words, more or less the regular collection of -rc1/2 type
  material.  A few of them, in particular the smsc911x for OMAP series,
  aren't technically regressions for 3.4, but they're valid fixes and
  we're still relatively early in the rc cycle so it seems appropriate
  to include them."

* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (60 commits)
  ARM: fix __io macro for PCMCIA
  ARM: EXYNOS: Fix compiler warning in dma.c file
  ARM: EXYNOS: fix ISO C90 warning
  ARM: OMAP2+: hwmod: Fix wrong SYSC_TYPE1_XXX_MASK bit definitions
  ARM: OMAP2+: hwmod: Make omap_hwmod_softreset wait for reset status
  ARM: OMAP2+: hwmod: Restore sysc after a reset
  ARM: OMAP2+: omap_hwmod: Allow io_ring wakeup configuration for all modules
  ARM: OMAP3: clock data: fill in some missing clockdomains
  ARM: OMAP4: clock data: Force a DPLL clkdm/pwrdm ON before a relock
  ARM: OMAP4: clock data: fix mult and div mask for USB_DPLL
  ARM: OMAP2+: powerdomain: Wait for powerdomain transition in pwrdm_state_switch()
  gpio: tegra: Iterate over the correct number of banks
  gpio: tegra: fix register address calculations for Tegra30
  EXYNOS: fix dependency for EXYNOS_CPUFREQ
  ARM: at91: dt: remove unit-address part for memory nodes
  ARM: at91: fix check of valid GPIO for SPI and USB
  USB: ehci-atmel: add needed of.h header file
  ARM: at91/NAND DT bindings: add comments
  ARM: at91/at91sam9x5.dtsi: fix NAND ale/cle in DT file
  USB: ohci-at91: trivial return code name change
  ...
2012-04-05 22:13:39 -07:00
Olof Johansson
a8f5b6e5ef OMAP clock, powerdomain, clockdomain, and hwmod fixes intended for the
early v3.4-rc series.  Also contains an HSMMC integration refinement
 of an earlier hardware bug workaround.
 
 ARM: OMAP3: clock data: fill in some missing clockdomains
 ARM: OMAP4: clock data: Force a DPLL clkdm/pwrdm ON before a relock
 ARM: OMAP4: clock data: fix mult and div mask for USB_DPLL
 ARM: OMAP2+: powerdomain: Wait for powerdomain transition in pwrdm_state_switch()
 ARM: OMAP AM3517/3505: clock data: change EMAC clocks aliases
 ARM: OMAP2+: hwmod: Fix wrong SYSC_TYPE1_XXX_MASK bit definitions
 ARM: OMAP2+: hwmod: Make omap_hwmod_softreset wait for reset status
 ARM: OMAP2+: hwmod: Restore sysc after a reset
 ARM: OMAP: clock: fix race in disable all clocks
 ARM: OMAP4: hwmod data: Add aliases for McBSP fclk clocks
 ARM: OMAP2+: omap_hwmod: Allow io_ring wakeup configuration for all modules
 ARM: OMAP3xxx: clock data: fix DPLL4 CLKSEL masks
 ARM: OMAP3xxx: HSMMC: avoid erratum workaround when transceiver is attached
 ARM: OMAP44xx: clockdomain data: correct the emu_sys_clkdm CLKTRCTRL data
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Merge tag 'omap-fixes-a2-for-3.4rc' of git://git.kernel.org/pub/scm/linux/kernel/git/pjw/omap-pending into fixes

From Paul Walmsley:

OMAP clock, powerdomain, clockdomain, and hwmod fixes intended for the
early v3.4-rc series.  Also contains an HSMMC integration refinement
of an earlier hardware bug workaround.

* tag 'omap-fixes-a2-for-3.4rc' of git://git.kernel.org/pub/scm/linux/kernel/git/pjw/omap-pending:
  ARM: OMAP2+: hwmod: Fix wrong SYSC_TYPE1_XXX_MASK bit definitions
  ARM: OMAP2+: hwmod: Make omap_hwmod_softreset wait for reset status
  ARM: OMAP2+: hwmod: Restore sysc after a reset
  ARM: OMAP2+: omap_hwmod: Allow io_ring wakeup configuration for all modules
  ARM: OMAP3: clock data: fill in some missing clockdomains
  ARM: OMAP4: clock data: Force a DPLL clkdm/pwrdm ON before a relock
  ARM: OMAP4: clock data: fix mult and div mask for USB_DPLL
  ARM: OMAP2+: powerdomain: Wait for powerdomain transition in pwrdm_state_switch()
  ARM: OMAP AM3517/3505: clock data: change EMAC clocks aliases
  ARM: OMAP: clock: fix race in disable all clocks
  ARM: OMAP4: hwmod data: Add aliases for McBSP fclk clocks
  ARM: OMAP3xxx: clock data: fix DPLL4 CLKSEL masks
  ARM: OMAP3xxx: HSMMC: avoid erratum workaround when transceiver is attached
  ARM: OMAP44xx: clockdomain data: correct the emu_sys_clkdm CLKTRCTRL data
2012-04-05 17:09:45 -07:00
Linus Torvalds
5d32c88f0b Merge branch 'akpm' (Andrew's patch-bomb)
Merge batch of fixes from Andrew Morton:
 "The simple_open() cleanup was held back while I wanted for laggards to
  merge things.

  I still need to send a few checkpoint/restore patches.  I've been
  wobbly about merging them because I'm wobbly about the overall
  prospects for success of the project.  But after speaking with Pavel
  at the LSF conference, it sounds like they're further toward
  completion than I feared - apparently davem is at the "has stopped
  complaining" stage regarding the net changes.  So I need to go back
  and re-review those patchs and their (lengthy) discussion."

* emailed from Andrew Morton <akpm@linux-foundation.org>: (16 patches)
  memcg swap: use mem_cgroup_uncharge_swap fix
  backlight: add driver for DA9052/53 PMIC v1
  C6X: use set_current_blocked() and block_sigmask()
  MAINTAINERS: add entry for sparse checker
  MAINTAINERS: fix REMOTEPROC F: typo
  alpha: use set_current_blocked() and block_sigmask()
  simple_open: automatically convert to simple_open()
  scripts/coccinelle/api/simple_open.cocci: semantic patch for simple_open()
  libfs: add simple_open()
  hugetlbfs: remove unregister_filesystem() when initializing module
  drivers/rtc/rtc-88pm860x.c: fix rtc irq enable callback
  fs/xattr.c:setxattr(): improve handling of allocation failures
  fs/xattr.c:listxattr(): fall back to vmalloc() if kmalloc() failed
  fs/xattr.c: suppress page allocation failure warnings from sys_listxattr()
  sysrq: use SEND_SIG_FORCED instead of force_sig()
  proc: fix mount -t proc -o AAA
2012-04-05 15:30:34 -07:00
Stephen Boyd
234e340582 simple_open: automatically convert to simple_open()
Many users of debugfs copy the implementation of default_open() when
they want to support a custom read/write function op.  This leads to a
proliferation of the default_open() implementation across the entire
tree.

Now that the common implementation has been consolidated into libfs we
can replace all the users of this function with simple_open().

This replacement was done with the following semantic patch:

<smpl>
@ open @
identifier open_f != simple_open;
identifier i, f;
@@
-int open_f(struct inode *i, struct file *f)
-{
(
-if (i->i_private)
-f->private_data = i->i_private;
|
-f->private_data = i->i_private;
)
-return 0;
-}

@ has_open depends on open @
identifier fops;
identifier open.open_f;
@@
struct file_operations fops = {
...
-.open = open_f,
+.open = simple_open,
...
};
</smpl>

[akpm@linux-foundation.org: checkpatch fixes]
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Julia Lawall <Julia.Lawall@lip6.fr>
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>
2012-04-05 15:25:50 -07:00
Rob Herring
1ac02d7958 ARM: fix __io macro for PCMCIA
With commit c334bc1 (ARM: make mach/io.h include optional), PCMCIA was
broken. PCMCIA depends on __io() returning a valid i/o address, and most
ARM platforms require IO_SPACE_LIMIT be set to 0xffffffff for PCMCIA. This
needs a better fix with a fixed i/o address mapping, but for now we just
restore things to the previous behavior.

This fixes at91, omap1, pxa and sa11xx. pxa needs io.h if PCI is enabled,
but PCMCIA is not. sa11xx already has IO_SPACE_LIMIT set to 0xffffffff,
so it doesn't need an io.h.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Cc: Joachim Eastwood <joachim.eastwood@jotron.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Andrew Victor <linux@maxim.org.za>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com>
Tested-by: Paul Parsons <lost.distance@yahoo.com> (pxa270)
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
2012-04-05 11:29:55 -07:00
Olof Johansson
00bd60fe33 Merge branch 'v3.4-samsung-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into fixes
* 'v3.4-samsung-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
  ARM: EXYNOS: Fix compiler warning in dma.c file
  ARM: EXYNOS: fix ISO C90 warning
  ARM: EXYNOS: use chip_id reg in uncompress to select uart base phys
  ARM: EXYNOS: fix CONFIG_DEBUG_LL
  ARM: S3C24XX: fix missing common.h in mach-s3c24xx/
2012-04-05 10:49:45 -07:00