The L2x0 cache controllers need to explicitly drain their write buffer
even for Normal Noncacheable memory accesses.
Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

This patch introduces the outer_cache_fns.sync function pointer together
with the OUTER_CACHE_SYNC config option that can be used to drain the
write buffer of the outer cache.
Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

To avoid #include collisions with subsequent patches in the series, this
patch moves the outer_cache definitions to a separate asm/outercache.h
file.
Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

Fix two bugs with the kernel image compression:
1) reset the bss section of the compressed vmlinux
2) clear the high half of the registers for 64 bit early enough
   for the decompression step
Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>

commit 02491447 "memcg: move charges of anonymous
swap" revealed that the 1 byte and 2 byte cmpxchg is currently broken:

arch/s390/include/asm/system.h: Assembler messages:
arch/s390/include/asm/system.h:241: Error: junk at end of line: `(%r5)'
make[1]: *** [mm/page_cgroup.o] Error 1
make[1]: *** Waiting for unfinished jobs....

It turned out that commit 987bcdac ([S390] use
inline assembly contraints available with gcc 3.3.3) broke the inline assembly.
The or operands are now in constraint 3 and 4 instead of 2 and 3.
Signed-off-by: NChristian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>

The intermediate lowcore for CONFIG_SMP is allocated using a call to
__alloc_bootmem() with a goal of 0. That however doesn't guarantee that
the allocated piece of memory is below 2GB.
Instead we should call __alloc_bootmem_low().
Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>

To save the registers for all CPUs a sigp "store status" is done that
stores the registers to address absolute zero. To access storage at
absolute zero, normally the address of the prefix register of the
accessing CPU has to be used. This does not work when large pages are
active (currently only under LPAR). In order to fix that problem,
instead of memcpy memcpy_real is used, which switches to real mode
where prefixing works.
Signed-off-by: NMichael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>

"Input: add KEY_WPS_BUTTON definition" introduced
a generic keycode for WPS input events.
Signed-off-by: NChristian Lamparter <chunkeey@googlemail.com>
Signed-off-by: NNicolas Pitre <nico@marvell.com>

Commit "Input: add KEY_WPS_BUTTON definition"
added a generic keycode for WPS button.
Let's use it, instead of "F1" mapping.
Signed-off-by: NChristian Lamparter <chunkeey@googlemail.com>
Signed-off-by: NNicolas Pitre <nico@marvell.com>

The parent rb_node needs to be initialized to shut up the compiler, even
though we're unlikely to ever hit this issue at run time.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

select_idle_routine() and register_sh_pmu() both needed their annotations
fixed up to silence section mismatch warnings.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

set_pmb_entry() is now only used by a function that is wrapped in #ifdef
CONFIG_PM, so wrap set_pmb_entry() in CONFIG_PM too.
Signed-off-by: NMatt Fleming <matt@console-pimps.org>
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Setting the TI in MMUCR causes all the TLB bits in MMUCR to be
cleared. Unfortunately, the TLB wired bits are also cleared when setting
the TI bit, causing any wired TLB entries to become unwired.

Use local_flush_tlb_all() which implements TLB flushing in a safer
manner by using the memory-mapped TLB registers. As each CPU has its own
PMB the modifications in pmb_init() only affect the local CPU, so only
flush the local CPU's TLB.
Signed-off-by: NMatt Fleming <matt@console-pimps.org>
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

flush_tlb_page() can be used to flush TLB entries that map executable
pages. Therefore, we need to ensure that the ITLB is also flushed in
local_flush_tlb_page().
Signed-off-by: NMatt Fleming <matt@console-pimps.org>
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

interruptible_sleep_on() is referenced for use in the mid_sched macro
which is not used anywhere.  Remove reference and macro as well as the
comment which appears to belong with them.
Signed-off-by: NAndreas Bombe <aeb@debian.org>
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Signed-off-by: NKuninori Morimoto <morimoto.kuninori@renesas.com>
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Signed-off-by: NKuninori Morimoto <morimoto.kuninori@renesas.com>
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

i2c_put_adapter is needed after i2c_get_adapter
Signed-off-by: NKuninori Morimoto <morimoto.kuninori@renesas.com>
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Commit 3f6da390
(perf: Rework and fix the arch CPU-hotplug hooks) broke suspend to
RAM on my HP nx6325 (and most likely on other AMD-based boxes too)
by allowing amd_pmu_cpu_offline() to be executed for CPUs that are
going offline as part of the suspend process.  The problem is that
cpuhw->amd_nb may be NULL already, so the function should make sure
it's not NULL before accessing the object pointed to by it.
Signed-off-by: NRafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

This fixes a warning when booting 2.6.34-rc2:

[   26.619814] ------------[ cut here ]------------
[   26.624604] WARNING: at fs/proc/generic.c:316 __xlate_proc_name+0xac/0xc0()
[   26.631555] name 'on/off button'
[   26.634753] Modules linked in:
Signed-off-by: NDaniel Mack <daniel@caiaq.de>
Cc: Sven Neumann <s.neumann@raumfeld.com>
Signed-off-by: NEric Miao <eric.y.miao@gmail.com>

Remove duplicated #include('s) in
 arch/arm/mach-pxa/raumfeld.c
Signed-off-by: NHuang Weiyi <weiyi.huang@gmail.com>
Signed-off-by: NEric Miao <eric.y.miao@gmail.com>

The function locomo_m62332_senddata sends a three byte i2c message to
a M62332 DAC. This entire function is guarded with a spin_lock_irqsave
at the start of the function and a spin_unlock_irqrestore at the end.

As each byte is transferred, the i2c ACK from the DAC is checked.
Currently, if the ACK is missing the function simply returns without
the unlock. It also leaves the i2c bus in an invalid state since the
last byte transferred did not have a "stop" condition and leave the
bus idle.

Fix this by adding an exit path using goto.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: NEric Miao <eric.y.miao@gmail.com>

The locomo spi registers are all defined in locomo.h as offsets
from the first spi register LOCOMO_SPI (0x60), which is itself
an offset from the locomo base address.  To correctly access
these registers LOCOMO_SPI must always be included in the
address calculation.

There are two places in locomo.c where this is not done.  The
first one, in locomo_suspend, actually results in a write to
LOCOMO_ST instead of LOCOMO_SPICT.  The second is in __locomo_probe
and results in a write to LOCOMO_MCSX2 instead of LOCOMO_SPIIE.

Fix these by including LOCOMO_SPI in the calculation.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: NEric Miao <eric.y.miao@gmail.com>

sharpsl_pm.c actually depends on max1111 driver being built-in when
not using legacy ssp code.
Reported-by: NJonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: NEric Miao <eric.y.miao@gmail.com>

Reported-by: NJonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: NEric Miao <eric.y.miao@gmail.com>

Signed-off-by: NJonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: NEric Miao <eric.y.miao@gmail.com>

Due to commit:

    5de813b6  ARM: Eliminate decompressor -Dstatic= PIC hack

The data section will be discarded for the decompressor, thus move the
static variables into BSS section by initializing them at run time.
Reported-by: NJonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: NEric Miao <eric.y.miao@gmail.com>

Due to commit:

    5de813b6  ARM: Eliminate decompressor -Dstatic= PIC hack

The data section will be discarded for the decompressor, thus move the
static variables into BSS section by initializing them at run time.
Signed-off-by: NJonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: NEric Miao <eric.y.miao@gmail.com>

Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

One to many close parens.

In file included from arch/arm/include/asm/page.h:202,
                 from include/linux/mm_types.h:15,
                 from include/linux/sched.h:63,
                 from arch/arm/kernel/asm-offsets.c:13:
arch/arm/include/asm/memory.h: In function 'virt_to_bus':
arch/arm/include/asm/memory.h:214: error: expected ';' before ')' token
arch/arm/include/asm/memory.h:214: error: expected statement before ')' token
arch/arm/include/asm/memory.h: In function 'bus_to_virt':
arch/arm/include/asm/memory.h:219: error: expected ';' before ')' token
arch/arm/include/asm/memory.h:219: error: expected statement before ')' token
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

The description says:

 Cause IO segments sent to a device for DMA to be merged virtually
 by the IOMMU when they happen to have been allocated contiguously.
 This doesn't add pressure to the IOMMU allocator. However, some
 drivers don't support getting large merged segments coming back
 from *_map_sg().

 Most drivers don't have this problem; it is safe to say Y here.

It's out of date. Long ago, drivers didn't have a way to tell IOMMUs
about their segment length limit (that is, the maximum segment length
that they can handle). So IOMMUs merged as many segments as possible
and gave too large segments to drivers.

dma_get_max_seg_size() was introduced to solve the above
problem. Device drives can use the API to tell IOMMU about the maximum
segment length that they can handle. In addition, the default limit
(64K) should be safe for everyone.

So this config option seems to be unnecessary.

Note that this config option just enables users to disable the virtual
merging by default. Users can still disable the virtual merging by the
boot parameter.
Signed-off-by: NFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>

powerpc initializes swiotlb before parsing the kernel boot options so
swiotlb options (e.g. specifying the swiotlb buffer size) are ignored.

Any time before freeing bootmem works for swiotlb so this patch moves
powerpc's swiotlb initialization after parsing the kernel boot
options, mem_init (as x86 does).
Signed-off-by: NFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Tested-by: NBecky Bruce <beckyb@kernel.crashing.org>
Tested-by: NAlbert Herranz <albert_herranz@yahoo.es>
Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>

When printk() is disabled (CONFIG_PRINTK) at menu item
 General setup
 -> Configure standard kernel features (for small systems)
    -> Enable support for printk
then there should be no printk() calls at all.
Signed-off-by: NMárton Németh <nm127@freemail.hu>
Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>

The powerpc implementations of syscall_get_error and
syscall_set_return_value should use CCR0:S0 (0x10000000) for testing
and setting syscall error status.  Fortunately these APIs don't seem
to be used at the moment.
Signed-off-by: NNathan Lynch <ntl@pobox.com>
Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>

The commit c186caca leads to the
following errors with CONFIG_ALPHA_{TSUNAMI, TITAN, RAWHIDE, MARVEL}:
/home/fujita/git/linux-2.6/include/asm-generic/dma-mapping-common.h: In
function `dma_map_sg_attrs':
/home/fujita/git/linux-2.6/include/asm-generic/dma-mapping-common.h:49:
error: implicit declaration of function `for_each_sg'
/home/fujita/git/linux-2.6/include/asm-generic/dma-mapping-common.h:50:
error: syntax error before "kmemcheck_mark_initialized"
Signed-off-by: NFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Reported-by: NMichael Cree <mcree@orcon.net.nz>
Signed-off-by: NMatt Turner <mattst88@gmail.com>

Signed-off-by: NFrans Pop <elendil@planet.nl>
Cc: linux-alpha@vger.kernel.org
Signed-off-by: NMatt Turner <mattst88@gmail.com>

Replace open-coded rate limiting logic with __ratelimit().
Signed-off-by: NAkinobu Mita <akinobu.mita@gmail.com>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: linux-alpha@vger.kernel.org
Signed-off-by: NMatt Turner <mattst88@gmail.com>

mpc52xx_gpt_wdt_setup is defined as 0, which causes the following build
failure with gcc 4.5, since it's built with -Werror.

arch/powerpc/platforms/52xx/mpc52xx_gpt.c:761:3: error: statement with no effect

Changing it to a static inline fixes the problem.
Reported-by: NJeff Mahoney <jeffm@suse.com>
Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>

perf_arch_fetch_caller_regs() is exported for the overriden x86
version, but not for the generic weak version.

As a general rule, weak functions should not have their symbol
exported in the same file they are defined.

So let's export it on trace_event_perf.c as it is used by trace
events only.

This fixes:

	ERROR: ".perf_arch_fetch_caller_regs" [fs/xfs/xfs.ko] undefined!
	ERROR: ".perf_arch_fetch_caller_regs" [arch/powerpc/platforms/cell/spufs/spufs.ko] undefined!

-v2: And also only build it if trace events are enabled.
-v3: Fix changelog mistake
Reported-by: NStephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: NFrederic Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1268697902-9518-1-git-send-regression-fweisbec@gmail.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

We shouldn't be always setting 'M' in the TLB entry since its reasonable
for somethings to be mapped non-coherent.  The PTE should have 'M' set
properly.
Signed-off-by: NKumar Gala <galak@kernel.crashing.org>