This only bothers with the TLB entry flush in the case of the initial
page write exception, as it is unecessary in the case of the load/store
exceptions.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

This adds a bit of rework to have the TLB protection violations skip the
TLB miss fastpath and go directly in to do_page_fault(), as these require
slow path handling.

Based on an earlier patch by SUGIOKA Toshinobu.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

This optimizes for the cases when a CPU does not yet have a valid ASID
context associated with it, as in this case there is no work for any of
flush_cache_mm()/flush_cache_page()/flush_cache_range() to do. Based on
the the MIPS implementation.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Now with all of the prep work out of the way, kill off the SH-5 variants
and use the SH-4 version directly. This also takes advantage of the
unrolling that was previously done for the new version.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

This plugs in some register alignment helpers for the shared flushers,
allowing them to also be used on SH-5. The main rationale here is that
in the SH-5 case we have a variable ABI, where the pointer size may not
equal the register width. This register extension is taken care of by
the SH-5 code already today, and is otherwise unused on the SH-4 code.
This combines the two and allows us to kill off the SH-5 implementation.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

This does a bit of unrolling for the SH-4 region flushers.

Based on an earlier patch by SUGIOKA Toshinobu.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

This splits out the SH-4 __flush_xxx_region() functions and defines them
as weak symbols. This allows us to provide optimized versions without
having to ifdef cache-sh4.c to death.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

This can use the now generic clear_page() implementation, which is backed
by the sh64 optimized memset routine. This also fixes up the case where
PAGE_SIZE != 4kB.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

This consolidates all of the NEFF-based sign extension for SH-5.
In the future the other SH code will need to make use of this as well,
so make it generic in preparation for more 32/64 consolidation.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

This provides a __flush_anon_page() that handles both the aliasing and
non-aliasing cases. This fixes up some crashes with heavy
get_user_pages() users.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

kunmap_coherent() doesn't do anything with its arguments, so just kill
them off.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

kmap_coherent() has gotten too big to leave as an inline, so we
bring it out-of-line.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

This plugs in a BUG_ON() in kmap_coherent() for PG_dcache_dirty pages
to catch when things go horribly wrong. Copied from the MIPS
implementation.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

The TLB miss fast-path presently calls in to update_mmu_cache() to
set up the entry, and does so with a NULL vma. Check for vma validity
in the __update_tlb() ptrace checks.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

This splits out a separate __update_cache()/__update_tlb() for
update_mmu_cache() to wrap in to. This lets us share the common
__update_cache() bits while keeping special __update_tlb() handling
broken out.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Now that the SH-4 page clear/copy ops are generic, they can be used for
all platforms with CONFIG_MMU=y. SH-5 remains the odd one out, but it too
will gradually be converted over to using this interface.

SH-3 platforms which do not contain aliases will see no impact from this
change, while aliasing SH-3 platforms will get the same interface as
SH-4.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Now that this only contains the __clear_user() function, rename it
accordingly.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

This wires up clear_user_highpage() on SH-4 and subsequently converts the
SH7705 32kB cache mode over to using it. Now that the SH-4 implementation
handles all of the dcache purging directly in the aliasing case, there is
no need to do this in the default clear_page() implementation.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

This inverts the delayed dcache flush a bit to be more in line with other
platforms. At the same time this also gives us the ability to do some
more optimizations and cleanup. Now that the update_mmu_cache() callsite
only tests for the bit, the implementation can gradually be split out and
made generic, rather than relying on special implementations for each of
the peculiar CPU types.

SH7705 in 32kB mode and SH-4 still need slightly different handling, but
this is something that can remain isolated in the varying page copy/clear
routines. On top of that, SH-X3 is dcache coherent, so there is no need
to bother with any of these tests in the PTEAEX version of
update_mmu_cache(), so we kill that off too.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Allocate one of the unused PTE bits for _PAGE_SPECIAL directly. This is
prep work for fast gup and the zero page revival.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

This builds on the bzip2/lzma zImage support change and wires it up for
uImages. Based on the blackfin implementation.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

* git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fixes:
  vmlinux.lds.h: restructure BSS linker script macros
  kconfig: initialize the screen before using curses(3) functions
  kconfig: variable argument lists needs `stdarg.h'
  kbuild, deb-pkg: fix install scripts for posix sh

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs:
  9p: Fix incorrect parameters to v9fs_file_readn.
  9p: Possible regression in p9_client_stat
  9p: default 9p transport module fix

* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6:
  cifs: free nativeFileSystem field before allocating a new one
  [CIFS] Distinguish posix opens and mkdirs from legacy mkdirs in stats

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/vapier/blackfin: (21 commits)
  Blackfin: define HARDIRQ_BITS again for now
  arch/blackfin: Add kmalloc NULL tests
  Blackfin: add CPLB entries for Core B on-chip L1 SRAM regions
  Blackfin: work around anomaly 05000189
  Blackfin: drop per-cpu loops_per_jiffy tracking
  Blackfin: fix bugs in GPIO resume code
  Blackfin: bf537-stamp: fix irq decl for AD7142
  Blackfin: fix handling of IPEND in interrupt context save
  Blackfin: drop duplicate runtime checking of anomaly 05000448
  Blackfin: fix incomplete renaming of the bfin-twi-lcd driver
  Blackfin: fix wrong CTS inversion
  Blackfin: update handling of anomaly 364 (wrong rev id in BF527-0.1)
  Blackfin: fix early_dma_memcpy() handling of busy channels
  Blackfin: handle BF561 Core B memory regions better when SMP=n
  Blackfin: fix miscompilation in lshrdi3
  Blackfin: fix silent crash when no uClinux MTD filesystem exists
  Blackfin: restore exception banner when dumping crash info
  Blackfin: work around anomaly 05000281
  Blackfin: update anomaly lists to match latest sheets/usage
  Blackfin: drop dead flash_probe call
  ...

Standard data flow for MMC/SD/SDIO cards requires that the mvsdio
controller be set for big endian operation.  This is causing problems
with buffers which length is not a multiple of 4 bytes as the last
partial word doesn't get shifted all the way and stored properly in
memory.  Let's compensate for this.
Signed-off-by: NNicolas Pitre <nico@marvell.com>
CC: stable@kernel.org
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

The Blackfin serial headers were inverting the CTS value leading to wrong
handling of the CTS line which broke CTS/RTS handling completely.
Signed-off-by: NSonic Zhang <sonic.zhang@analog.com>
Signed-off-by: NMike Frysinger <vapier@gentoo.org>
Signed-off-by: NAlan Cox <alan@linux.intel.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

This function does not have an error return and returning an error is
instead interpreted as having a lot of pending bytes.

Reported by Jeff Harris who provided a list of some of the remaining
offenders.
Signed-off-by: NAlan Cox <alan@linux.intel.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

If spin_lock_irqsave is called twice in a row with the same second
argument, the interrupt state at the point of the second call overwrites
the value saved by the first call.  Indeed, the second call does not
need to save the interrupt state, so it is changed to a simple
spin_lock.

The semantic match that finds this problem is as follows:
(http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@@
expression lock1,lock2;
expression flags;
@@

*spin_lock_irqsave(lock1,flags)
... when != flags
*spin_lock_irqsave(lock2,flags)
// </smpl>
Signed-off-by: NJulia Lawall <julia@diku.dk>
Signed-off-by: NAlan Cox <alan@linux.intel.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

The buffer for the consoles are unconditionally allocated at con_init()
time, which miss the creation of the vcs(a) devices.

Since 2.6.30 (commit 4995f8ef, 'vcs:
hook sysfs devices into object lifetime instead of "binding"' to be
exact) these devices are no longer created at open() and removed on
close(), but controlled by the lifetime of the buffers.
Reported-by: NGerardo Exequiel Pozzi <vmlinuz386@yahoo.com.ar>
Tested-by: NGerardo Exequiel Pozzi <vmlinuz386@yahoo.com.ar>
Cc: stable@kernel.org
Signed-off-by: NKay Sievers <kay.sievers@vrfy.org>
Signed-off-by: NAlan Cox <alan@linux.intel.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

...otherwise, we'll leak this memory if we have to reconnect (e.g. after
network failure).
Signed-off-by: NJeff Layton <jlayton@redhat.com>
CC: Stable <stable@kernel.org>
Signed-off-by: NSteve French <sfrench@us.ibm.com>

Updated to use the fixed BSS linker script macros from this
thread:

	http://www.spinics.net/lists/kernel/msg913238.htmlSigned-off-by: NTim Abbott <tabbott@ksplice.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: linux-sh@vger.kernel.org
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Convert the r8a66597-hcd driver to use the on_chip flag
from platform data to enable on chip behaviour instead
of relying on CONFIG_SUPERH_ON_CHIP_R8A66597 ugliness.

This makes the code cleaner and also allows us to support
both external and internal r8a66597 with the same kernel.

It also makes the Kconfig part more future proof since
we with this patch can add support for new processors
with on-chip r8a66597 without modifying the Kconfig.
Signed-off-by: NMagnus Damm <damm@igel.co.jp>
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Convert the r8a66597-hcd driver to dev_pm_ops. This makes
the driver a good PM citizen and removes a warning printout.
Signed-off-by: NMagnus Damm <damm@igel.co.jp>
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

This patch adds hwblk support for the sh7723 processor.
Signed-off-by: NMagnus Damm <damm@igel.co.jp>
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Extend the SuperH hwblk code to support more than one counter.
Contains ground work for the future Runtime PM implementation.
Signed-off-by: NMagnus Damm <damm@igel.co.jp>
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

* master.kernel.org:/home/rmk/linux-2.6-arm:
  ARM: Realview & Versatile: Fix i2c_board_info definitions
  [ARM] 5608/1: Updated U300 defconfig
  [ARM] 5606/1: Fix ep93xx watchdog driver headers
  [ARM] 5594/1: Correct U300 VIC init PM setting
  [ARM] 5595/1: ep93xx: missing header in dma-m2p.c
  [ARM] Kirkwood: Correct header define
  [ARM] pxa: fix ULPI_{DIR,NXT,STP} MFP defines
  backlight: fix pwm_bl.c to notify platform code when suspending
  [ARM] pxa: use kzalloc() in pxa_init_gpio_chip()
  [ARM] pxa: correct I2CPWR clock for pxa3xx
  pxamci: correct DMA flow control
  ARM: add support for the EET board, based on the i.MX31 pcm037 module
  pcm037: add MT9T031 camera support
  Armadillo 500 add NAND flash device support (resend).
  ARM MXC: Armadillo 500 add NOR flash device support (resend).
  mx31: remove duplicated #include