* '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>

* 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

Fix i2c_board_info definitions - we were defining the 'type' field
of these structures twice since the first argument of I2C_BOARD_INFO
sets this field.  Move the second definition into I2C_BOARD_INFO().
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
Acked-by: NJean Delvare <khali@linux-fr.org>
Acked-by: NBen Dooks <ben-linux@fluff.org>

* 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6:
  drm: Move a dereference below a NULL test
  fb/intelfb: conflict with DRM_I915 and hide by default
  drm/ttm: fix misplaced parentheses
  drm/via: Fix vblank IRQ on VIA hardware.
  drm: drm_gem, check kzalloc retval
  drm: drm_debugfs, check kmalloc retval
  drm/radeon: add some missing pci ids

* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/fyu/linux-2.6:
  Revert "Neither asm/types.h nor linux/types.h is required for arch/ia64/include/asm/fpu.h"
  Add dma_debug_init() for ia64
  Fix ia64 compilation IS_ERR and PTE_ERR errors.

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6:
  x86/pci: insert ioapic resource before assigning unassigned resources

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
  ALSA: riptide -  proper handling of pci_register_driver for joystick
  sound: usb-audio: add workaround for Blue Microphones devices
  ALSA: hda_intel: more strict alc880_parse_auto_config dig_nid checking
  ASoC: Fix NULL pointer dereference in __pxa2xx_pcm_hw_free

* git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus:
  virtio_net: Sync header with qemu
  virtio-pci: correctly unregister root device on error
  virtio_blk: ioctl return value fix
  virtio_blk: don't bounce highmem requests
  lguest: restrict CPUID to avoid perf counter wrmsr
  lguest: remove unnecessary forward struct declaration
  lguest: fix journey

Merge branch 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

* 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  tracing/function: Fix the return value of ftrace_trace_onoff_callback()

Whoops.. fortunately not many people use this yet.
Signed-off-by: NAlan Cox <alan@linux.intel.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

asm/fpu.h uses the __IA64_UL macro which is declared in asm/types.h, so
this include is really required. Without it, GNU libc fails to build.

This reverts commit 2678c07b.
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>
Acked-by: NFenghua Yu <fenghua.yu@intel.com>

The commit 99162195 was supposed to
add CONFIG_DMA_API_DEBUG support to IA64 however I forgot to add
dma_debug_init().
Signed-off-by: Nfujita <fujita@tulip.osrg.net>
Acked-by: NFenghua Yu <fenghua.yu@intel.com>

When building ia64 kernel with CONFIG_XEN_SYS_HYPERVISOR, compiler reports
errors:

drivers/xen/sys-hypervisor.c: In function ‘uuid_show’:
drivers/xen/sys-hypervisor.c:125: error: implicit declaration of function ‘IS_ERR’
drivers/xen/sys-hypervisor.c:126: error: implicit declaration of function ‘PTR_ERR’

This patch fixes the errors.
Signed-off-by: NFenghua Yu <fenghua.yu@intel.com>
Acked-by: NIsaku Yamahata <yamahata@valinux.co.jp>

Removed the LBD support that isn't of any use right now at least,
then remove remnants of the TCM config flags that somehow crept
in by mistake (not yet merged patch for 2.6.32) and then the usual
defconfig noise from updated menus.
Signed-off-by: NLinus Walleij <linus.walleij@stericsson.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

Fix a number of build errors in the ep93xx watchdog driver due
to missing io.h
Signed-off-by: NRyan Mallon <ryan@bluewatersys.com>
Acked-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

Qemu added support for a few extra RX modes that Linux doesn't
currently make use of.  Sync the headers to maintain consistency.
Signed-off-by: NAlex Williamson <alex.williamson@hp.com>
Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>

If pci_register_driver() fails we're incorrectly unregistering the root
device with device_unregister() rather than root_device_unregister().
Reported-by: NDon Zickus <dzickus@redhat.com>
Signed-off-by: NMark McLoughlin <markmc@redhat.com>
Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>

Block driver ioctl methods must return ENOTTY and not -ENOIOCTLCMD if
they expect the block layer to handle generic ioctls.

This triggered a BLKROSET failure in xfsqa #200.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>

By default a block driver bounces highmem requests, but virtio-blk is
perfectly fine with any request that fit into it's 64 bit addressing scheme,
mapped in the kernel virtual space or not.

Besides improving performance on highmem systems this also makes the
reproducible oops in __bounce_end_io go away (but hiding the real cause).
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>

Avoid the following:
[    0.012093] WARNING: at arch/x86/kernel/apic/apic.c:249 native_apic_write_dummy+0x2f/0x40()

Rather than chase each new cpuid-detected feature, just lie about the highest
valid CPUID so this code is never run.
Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>

While fixing lg.h to drop the fwd declaration, I noticed
there's another one ;)
Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>

fix: "make Guest" was complaining about duplicated G:032
Signed-off-by: NMatias Zabaljauregui <zabaljauregui@gmail.com>
Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>

ftrace_trace_onoff_callback() will return an error even if we do the
right operation, for example:

 # echo _spin_*:traceon:10 > set_ftrace_filter
 -bash: echo: write error: Invalid argument
 # cat set_ftrace_filter
 #### all functions enabled ####
 _spin_trylock_bh:traceon:count=10
 _spin_unlock_irq:traceon:count=10
 _spin_unlock_bh:traceon:count=10
 _spin_lock_irq:traceon:count=10
 _spin_unlock:traceon:count=10
 _spin_trylock:traceon:count=10
 _spin_unlock_irqrestore:traceon:count=10
 _spin_lock_irqsave:traceon:count=10
 _spin_lock_bh:traceon:count=10
 _spin_lock:traceon:count=10

We want to set _spin_*:traceon:10 to set_ftrace_filter, it complains
with "Invalid argument", but the operation is successful.

This is because ftrace_process_regex() returns the number of functions that
matched the pattern. If the number is not 0, this value is returned
by ftrace_regex_write() whereas we want to return the number of bytes
virtually written.
Also the file offset pointer is not updated in this case.

If the number of matched functions is lower than the number of bytes written
by the user, this results to a reprocessing of the string given by the user with
a lower size, leading to a malformed ftrace regex and then a -EINVAL returned.

So, this patch fixes it by returning 0 if no error occured.
The fix also applies on 2.6.30
Signed-off-by: NXiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Reviewed-by: NLi Zefan <lizf@cn.fujitsu.com>
Cc: stable@kernel.org
Signed-off-by: NFrederic Weisbecker <fweisbec@gmail.com>

The default values of HARDIRQ_BITS and PREEMPT_BITS in common code leads to
build failure:

In file included from include/linux/interrupt.h:12,
                from include/linux/kernel_stat.h:8,
                from arch/blackfin/kernel/asm-offsets.c:32:
include/linux/hardirq.h:66:2: error: #error PREEMPT_ACTIVE is too low!

So until that gets resolved, just declare our own default value again.
Signed-off-by: NMike Frysinger <vapier@gentoo.org>

Merge branch 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/peterz/linux-2.6-sched

* 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/peterz/linux-2.6-sched:
  sched: Fix bug in SCHED_IDLE interaction with group scheduling
  sched: Fix rt_rq->pushable_tasks initialization in init_rt_rq()
  sched: Reset sched stats on fork()
  sched_rt: Fix overload bug on rt group scheduling
  sched: Documentation/sched-rt-group: Fix style issues & bump version

Merge branch 'timers-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

* 'timers-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  timer stats: fix quick check optimization

* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
  powerpc: Fix another bug in move of altivec code to vector.S
  powerpc: Fix booke user_disable_single_step()

If a tty in N_TTY mode with echo enabled manages to get itself into a state
where
	- echo characters are pending
	- FASYNC is enabled
	- tty_write_wakeup is called from either
		- a device write path (pty)
		- an IRQ (serial)

then it either deadlocks or explodes taking a mutex in the IRQ path.

On the serial side it is almost impossible to reproduce because you have to
go from a full serial port to a near empty one with echo characters
pending. The pty case happens to have become possible to trigger using
emacs and ptys, the pty changes having created a scenario which shows up
this bug.

The code path is

	n_tty:process_echoes() (takes mutex)
	tty_io:tty_put_char()
	pty:pty_write  (or serial paths)
	tty_wakeup     (from pty_write or serial IRQ)
	n_tty_write_wakeup()
	process_echoes()
	*KABOOM*
Signed-off-by: NAlan Cox <alan@linux.intel.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Don't forget to drop a tty refererence on fail paths in
receive_data().
Signed-off-by: NJiri Slaby <jirislaby@gmail.com>
Signed-off-by: NAlan Cox <alan@linux.intel.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Bootmem is not used for the vt screen buffer anymore as slab is now
available at the time the console is initialized.

Get rid of the now superfluous distinction between slab and bootmem,
it's always slab.

This also fixes a kmalloc leak which Catalin described thusly:

Commit a5f4f52e ("vt: use kzalloc() instead of the bootmem allocator")
replaced the alloc_bootmem() with kzalloc() but didn't set vc_kmalloced to
1 and the memory block is later leaked.  The corresponding kmemleak trace:

unreferenced object 0xdf828000 (size 8192):
  comm "swapper", pid 0, jiffies 4294937296
  backtrace:
    [<c006d473>] __save_stack_trace+0x17/0x1c
    [<c000d869>] log_early+0x55/0x84
    [<c01cfa4b>] kmemleak_alloc+0x33/0x3c
    [<c006c013>] __kmalloc+0xd7/0xe4
    [<c00108c7>] con_init+0xbf/0x1b8
    [<c0010149>] console_init+0x11/0x20
    [<c0008797>] start_kernel+0x137/0x1e4
Signed-off-by: NJohannes Weiner <hannes@cmpxchg.org>
Reviewed-by: NPekka Enberg <penberg@cs.helsinki.fi>
Tested-by: NCatalin Marinas <catalin.marinas@arm.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NAlan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

dcb314@hotmail.com notes that this memset has its args reversed.

It's unneeded anyway, so remove it.

Addresses http://bugzilla.kernel.org/show_bug.cgi?id=13587Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NAlan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>