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Anton Vorontsov [Thu, 25 Dec 2008 14:15:11 +0000 (17:15 +0300)]
USB: fsl_qe_udc: Fix muram corruption by disabled endpoints
Before freeing an endpoint's muram memory, we should stop all activity
of the endpoint, otherwise the QE UDC controller might do nasty things
with the muram memory that isn't belong to that endpoint anymore.
The qe_ep_reset() effectively flushes the hardware fifos, finishes all
late transaction and thus prevents the corruption.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Acked-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Anton Vorontsov [Thu, 25 Dec 2008 14:15:09 +0000 (17:15 +0300)]
USB: fsl_qe_udc: Fix disconnects reporting during bus reset
Freescale QE UDC controllers can't report the "port change" states,
so the only way to handle disconnects is to process bus reset
interrupts. The bus reset can take some time, that is, few irqs.
Gadgets may print the disconnection events, and this causes few
repetitive messages in the kernel log.
This patch fixes the issue by using the usb_state machine, if the
usb controller has been already reset, just quit the reset irq
early.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Acked-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Anton Vorontsov [Thu, 25 Dec 2008 14:15:07 +0000 (17:15 +0300)]
USB: fsl_qe_udc: Fix QE USB controller initialization
qe_udc_reg_init() leaves the USB controller enabled before muram memory
initialized. Sometimes the uninitialized muram memory confuses the
controller, and it start sending the busy interrupts.
Fix this by disabling the controller, it will be enabled later by
the gadget driver, at bind time.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Anton Vorontsov [Thu, 25 Dec 2008 14:15:05 +0000 (17:15 +0300)]
USB: fsl_qe_udc: Fix recursive locking bug in ch9getstatus()
The call chain is this:
qe_udc_irq() <- grabs the udc->lock spinlock
rx_irq()
qe_ep0_rx()
ep0_setup_handle()
setup_received_handle()
ch9getstatus()
qe_ep_queue() <- tries to grab the udc->lock again
It seems unsafe to temporarily drop the lock in the ch9getstatus(),
so to fix that bug the lock-less __qe_ep_queue() function
implemented and used by the ch9getstatus().
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Acked-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Anton Vorontsov [Thu, 25 Dec 2008 14:15:02 +0000 (17:15 +0300)]
USB: fsl_qe_udc: Fix oops on QE UDC probe failure
In case of probing errors the driver kfrees the udc_controller, but it
doesn't set the pointer to NULL.
When usb_gadget_register_driver is called, it checks for udc_controller
!= NULL, the check passes and the driver accesses nonexistent memory.
Fix this by setting udc_controller to NULL in case of errors.
While at it, also implement irq_of_parse_and_map()'s failure and cleanup
cases.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Acked-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Linus Torvalds [Mon, 9 Feb 2009 16:57:29 +0000 (08:57 -0800)]
i915: Fix more size_t format string warnings
The DRI people seem to have a hard time getting these right (see also
commit
aeb565dfc3ac4c8b47c5049085b4c7bfb2c7d5d7).
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Mon, 9 Feb 2009 16:52:28 +0000 (08:52 -0800)]
Merge branch 'drm-fixes' of git://git./linux/kernel/git/airlied/drm-2.6
* 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6:
drm/i915: select framebuffer support automatically
drm/i915: add get_vblank_counter function for GM45
drm/i915: capture last_vblank count at IRQ uninstall time too
drm/i915: Unlock mutex on i915_gem_fault() error path
drm/i915: Quiet the message on get/setparam ioctl with an unknown value.
drm/i915: skip LVDS initialization on Apple Mac Mini
drm/i915: sync SDVO code with stable userland modesetting driver
drm/i915: Unref the object after failing to set tiling mode.
drm/i915: add fence register management to execbuf
drm/i915: Return error from i915_gem_object_get_fence_reg() when failing.
drm/i915: Set up an MTRR covering the GTT at driver load.
drm/i915: Skip SDVO/HDMI init when the chipset tells us it's not present.
drm/i915: Suppress GEM teardown on X Server exit in KMS mode.
drm/radeon: fix ioremap conflict with AGP mappings
i915: fix unneeded locking in i915 LVDS get modes code.
Linus Torvalds [Mon, 9 Feb 2009 16:52:02 +0000 (08:52 -0800)]
Merge git://git./linux/kernel/git/herbert/crypto-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
crypto: scatterwalk - Avoid flush_dcache_page on slab pages
crypto: shash - Fix tfm destruction
crypto: api - Fix zeroing on free
crypto: shash - Fix module refcount
crypto: api - Fix algorithm test race that broke aead initialisation
David Howells [Mon, 9 Feb 2009 16:47:36 +0000 (16:47 +0000)]
FRV: in_interrupt() requires #inclusion of linux/hardirq.h not asm/hardirq.h now
in_interrupt() requires #inclusion of linux/hardirq.h not asm/hardirq.h now.
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Kyle McMartin [Sun, 8 Feb 2009 22:39:58 +0000 (17:39 -0500)]
x86: spinlocks: define dummy __raw_spin_is_contended
Architectures other than mips and x86 are not using ticket spinlocks.
Therefore, the contention on the lock is meaningless, since there is
nobody known to be waiting on it (arguably /fairly/ unfair locks).
Dummy it out to return 0 on other architectures.
Signed-off-by: Kyle McMartin <kyle@redhat.com>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Herbert Xu [Mon, 9 Feb 2009 03:22:14 +0000 (14:22 +1100)]
crypto: scatterwalk - Avoid flush_dcache_page on slab pages
It's illegal to call flush_dcache_page on slab pages on a number
of architectures. So this patch avoids doing so if PageSlab is
true.
In future we can move the flush_dcache_page call to those page
cache users that actually need it.
Reported-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Hugh Dickins [Sun, 8 Feb 2009 20:56:58 +0000 (20:56 +0000)]
mm: fix error case in mlock downgrade reversion
Commit
27421e211a39784694b597dbf35848b88363c248, Manually revert
"mlock: downgrade mmap sem while populating mlocked regions", has
introduced its own regression: __mlock_vma_pages_range() may report
an error (for example, -EFAULT from trying to lock down pages from
beyond EOF), but mlock_vma_pages_range() must hide that from its
callers as before.
Reported-by: Sami Farin <safari-kernel@safari.iki.fi>
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Sun, 8 Feb 2009 20:37:20 +0000 (12:37 -0800)]
Linux 2.6.29-rc4
Linus Torvalds [Sun, 8 Feb 2009 20:35:26 +0000 (12:35 -0800)]
Merge git://git./linux/kernel/git/arjan/linux-2.6-async-update
* git://git.kernel.org/pub/scm/linux/kernel/git/arjan/linux-2.6-async-update:
async: use list_move_tail
async: Rename _special -> _domain for clarity.
async: Add some documentation.
async: Handle kthread_run() return codes.
async: Fix running list handling.
Benjamin Herrenschmidt [Thu, 5 Feb 2009 01:06:52 +0000 (12:06 +1100)]
radeonfb: Fix resume from D3Cold on some platforms
For historical reason, this driver used its own saving/restoring
of the PCI config space, and used the state of it on resume as
an indication as to whether it needed to re-POST the chip or not.
This methods breaks with the later core changes since the core will
have restored things for us.
This patch fixes it by removing that custom code, using standard
core methods to save/restore state, and testing for the need to
re-POST by comparing the content of a few key PLL registers.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Benjamin Herrenschmidt [Thu, 5 Feb 2009 01:06:51 +0000 (12:06 +1100)]
aty128fb: Properly save PCI state before changing PCI PM level
This fixes aty128fb to properly save the PCI config space -before- it
potentially switches the PM state of the chip. This avoids a
warning with the new PM core and is the right thing to do anyway.
I also replaced the hand-coded switch to D2 with a call to the
genericc pci_set_power_state() and removed the code that switches it
back to D0 since the generic code is doing that for us nowadays.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Benjamin Herrenschmidt [Thu, 5 Feb 2009 01:06:50 +0000 (12:06 +1100)]
atyfb: Properly save PCI state before changing PCI PM level
This fixes atyfb to properly save the PCI config space -before- it
potentially switches the PM state of the chip. This avoids a
warning with the new PM core and is the right thing to do anyway.
I also slightly cleaned up the code that checks whether we are
running on a PowerMac to do a runtime check instead of a compile
check only, and replaced a deprecated number with the proper
symbolic constant.
Finally, I removed the useless switch to D0 from resume since
the core does it for us.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Stefan Richter [Mon, 2 Feb 2009 12:24:34 +0000 (13:24 +0100)]
async: use list_move_tail
list.h provides a dedicated primitive for
"list_del followed by list_add_tail"... list_move_tail.
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Cornelia Huck [Tue, 20 Jan 2009 14:31:31 +0000 (15:31 +0100)]
async: Rename _special -> _domain for clarity.
Rename the async_*_special() functions to async_*_domain(), which
describes the purpose of these functions much better.
[Broke up long lines to silence checkpatch]
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Cornelia Huck [Mon, 19 Jan 2009 12:45:33 +0000 (13:45 +0100)]
async: Add some documentation.
Add some kerneldoc to the async interface.
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Cornelia Huck [Mon, 19 Jan 2009 12:45:31 +0000 (13:45 +0100)]
async: Handle kthread_run() return codes.
If we fail to create the manager thread, fall back to non-fastboot.
If we fail to create an async thread, try again after waiting for
a bit.
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Cornelia Huck [Mon, 19 Jan 2009 12:45:28 +0000 (13:45 +0100)]
async: Fix running list handling.
async_schedule() should pass in async_running as the running
list, and run_one_entry() should put the entry to be run on
the provided running list instead of always on the generic one.
Reported-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Ingo Molnar [Thu, 5 Feb 2009 15:03:34 +0000 (16:03 +0100)]
drm/i915: select framebuffer support automatically
Migration helper.
The i915 driver recently added a 'depends on FB' rule to its
Kconfig entry - which silently turns off DRM_I915 if someone
has a working config but no CONFIG_FB selected, and upgrades
to the latest upstream kernel.
Norbert Preining reported this problem:
Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=12599
Subject : dri /dev node disappeared with 2.6.29-rc1
So change it to "select FB", which auto-selects framebuffer
support. This way the driver keeps working, regardless of
whether FB was enabled before or not.
Kconfig select's of interactive options can be problematic to
dependencies and can cause build breakages - but in this case
it's safe because it's a leaf entry with no dependencies of its
own.
( There is some minor circular dependency fallout as FB_I810
and FB_INTEL also used 'depends on FB' constructs - update
those to "select FB" too. )
Reported-by: Norbert Preining <preining@logic.at>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Dave Airlie <airlied@linux.ie>
Jesse Barnes [Fri, 6 Feb 2009 18:22:41 +0000 (10:22 -0800)]
drm/i915: add get_vblank_counter function for GM45
As discussed in the long thread about vblank related timeouts, it turns out
GM45 has different frame count registers than previous chips. This patch
adds support for them, which prevents us from waiting on really stale
sequence values in drm_wait_vblank (which rather than returning immediately
ends up timing out or getting interrupted).
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Dave Airlie <airlied@linux.ie>
Jesse Barnes [Fri, 6 Feb 2009 21:04:49 +0000 (13:04 -0800)]
drm/i915: capture last_vblank count at IRQ uninstall time too
In
dc1336ff4fe08ae7cfe8301bfd7f0b2cfd31d20a (set vblank enable flag correctly
across IRQ uninstall), we made sure drivers that uninstall their interrupt
handler set the vblank enabled flag correctly, so that when interrupts are
re-enabled, vblank interrupts & counts work as expected. However I missed the
last_vblank field: it needs to be updated as well, otherwise, at the next
drm_update_vblank_count we'll end up comparing a current count to a stale
one (the last one captured by the disable function), which may trigger the
wraparound handling, leading to a jumpy counter and hangs in drm_wait_vblank.
The jumpy counter can prevent the DRM_WAIT_ON from returning success if the
difference between the current count and the requested count is greater than
2^23, leading to timeouts or hangs, if the ioctl is restarted in a loop (as
is the case in libdrm < 2.4.4).
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Acked-by: Michel Dänzer <michel@daenzer.net>
Tested-by: Timo Aaltonen <tjaalton@cc.hut.fi>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Chris Wilson [Wed, 4 Feb 2009 14:15:10 +0000 (14:15 +0000)]
drm/i915: Unlock mutex on i915_gem_fault() error path
If we failed to allocate a new fence register we would return
VM_FAULT_SIGBUS without relinquishing the lock.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@linux.ie>
Eric Anholt [Tue, 3 Feb 2009 20:10:21 +0000 (12:10 -0800)]
drm/i915: Quiet the message on get/setparam ioctl with an unknown value.
Getting an unknown get/setparam used to be more significant back when they
didn't change much. However, now that we're in the git world we're using
them instead of a monotonic version number to signal feature availability,
so clients ask about unknown params on older kernels more often.
Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@linux.ie>
Paul Collins [Wed, 4 Feb 2009 10:05:41 +0000 (23:05 +1300)]
drm/i915: skip LVDS initialization on Apple Mac Mini
The Apple Mac Mini falsely reports LVDS. Use DMI to check whether we
are running on a Mac Mini, and skip LVDS initialization if that proves
to be the case.
Signed-off-by: Paul Collins <paul@ondioline.org>
Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@linux.ie>
Jesse Barnes [Mon, 2 Feb 2009 23:11:52 +0000 (15:11 -0800)]
drm/i915: sync SDVO code with stable userland modesetting driver
Pull in an update from the 2D driver (hopefully the last one, future work
should be done here and pulled back into xf86-video-intel as needed).
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@linux.ie>
Chris Wilson [Fri, 30 Jan 2009 21:10:22 +0000 (21:10 +0000)]
drm/i915: Unref the object after failing to set tiling mode.
Cleanup the object reference on the error paths.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@linux.ie>
Jesse Barnes [Tue, 27 Jan 2009 01:10:45 +0000 (17:10 -0800)]
drm/i915: add fence register management to execbuf
Adds code to set up fence registers at execbuf time on pre-965 chips as
necessary. Also fixes up a few bugs in the pre-965 tile register support
(get_order != ffs). The number of fences available to the kernel defaults
to the hw limit minus 3 (for legacy X front/back/depth), but a new parameter
allows userspace to override that as needed.
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@linux.ie>
Eric Anholt [Tue, 27 Jan 2009 18:33:49 +0000 (10:33 -0800)]
drm/i915: Return error from i915_gem_object_get_fence_reg() when failing.
Previously, the caller would continue along without knowing that the
function failed, resulting in potential mis-rendering. Right now vm_fault
just returns SIGBUS in that case, and we may need to disable signal handling
to avoid that happening.
Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@linux.ie>
Eric Anholt [Fri, 23 Jan 2009 20:57:47 +0000 (12:57 -0800)]
drm/i915: Set up an MTRR covering the GTT at driver load.
We'd love to just be using PAT, but even on chips with PAT it gets disabled
sometimes due to an errata. It would probably be better to have pat_enabled
exported and only bother with this when !pat_enabled.
Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@linux.ie>
Eric Anholt [Thu, 22 Jan 2009 21:01:02 +0000 (13:01 -0800)]
drm/i915: Skip SDVO/HDMI init when the chipset tells us it's not present.
This saves startup time from probing SDVO, and saves setting up HDMI outputs
on G4X devices that don't have them.
Signed-off-by: Dave Airlie <airlied@linux.ie>
Eric Anholt [Thu, 22 Jan 2009 17:56:58 +0000 (09:56 -0800)]
drm/i915: Suppress GEM teardown on X Server exit in KMS mode.
Fixes hangs when starting X for the second time.
Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@linux.ie>
Dave Airlie [Sat, 7 Feb 2009 01:15:41 +0000 (11:15 +1000)]
drm/radeon: fix ioremap conflict with AGP mappings
this solves a regression from
http://bugzilla.kernel.org/show_bug.cgi?id=12441
Reported-by: Daniel Vetter <daniel@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Linus Torvalds [Sat, 7 Feb 2009 18:46:30 +0000 (10:46 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/jbarnes/pci-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6:
PCI PM: make the PM core more careful with drivers using the new PM framework
PCI PM: Read power state from device after trying to change it on resume
PCI PM: Do not disable and enable bridges during suspend-resume
PCI: PCIe portdrv: Simplify suspend and resume
PCI PM: Fix saving of device state in pci_legacy_suspend
PCI PM: Check if the state has been saved before trying to restore it
PCI PM: Fix handling of devices without drivers
PCI: return error on failure to read PCI ROMs
PCI: properly clean up ASPM link state on device remove
Rusty Russell [Sat, 7 Feb 2009 07:45:56 +0000 (18:15 +1030)]
module: remove over-zealous check in __module_get()
Impact: fix spurious BUG_ON() triggered under load
module_refcount() isn't reliable outside stop_machine(), as demonstrated
by Karsten Keil <kkeil@suse.de>, networking can trigger it under load
(an inc on one cpu and dec on another while module_refcount() is tallying
can give false results, for example).
Almost noone should be using __module_get, but that's another issue.
Cc: Karsten Keil <kkeil@suse.de>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Sat, 7 Feb 2009 16:30:20 +0000 (08:30 -0800)]
Merge branch 'release' of git://git./linux/kernel/git/lenb/linux-acpi-2.6
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: (30 commits)
ACPI: Kconfig text - Fix the ACPI_CONTAINER module name according to the real module name.
eeepc-laptop: fix oops when changing backlight brightness during eeepc-laptop init
ACPICA: Fix table entry truncation calculation
ACPI: Enable bit 11 in _PDC to advertise hw coord
ACPI: struct device - replace bus_id with dev_name(), dev_set_name()
ACPI: add missing KERN_* constants to printks
ACPI: dock: Don't eval _STA on every show_docked sysfs read
ACPI: disable ACPI cleanly when bad RSDP found
ACPI: delete CPU_IDLE=n code
ACPI: cpufreq: Remove deprecated /proc/acpi/processor/../performance proc entries
ACPI: make some IO ports off-limits to AML
ACPICA: add debug dump of BIOS _OSI strings
ACPI: proc_dir_entry 'video/VGA' already registered
ACPI: Skip the first two elements in the _BCL package
ACPI: remove BM_RLD access from idle entry path
ACPI: remove locking from PM1x_STS register reads
eeepc-laptop: use netlink interface
eeepc-laptop: Implement rfkill hotplugging in eeepc-laptop
eeepc-laptop: Check return values from rfkill_register
eeepc-laptop: Add support for extended hotkeys
...
Len Brown [Sat, 7 Feb 2009 06:34:56 +0000 (01:34 -0500)]
Merge branches 'release', 'asus', 'bugzilla-12450', 'cpuidle', 'debug', 'ec', 'misc', 'printk' and 'processor' into release
Thierry Vignaud [Sat, 7 Feb 2009 06:12:19 +0000 (01:12 -0500)]
ACPI: Kconfig text - Fix the ACPI_CONTAINER module name according to the real module name.
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
Darren Salt [Sat, 7 Feb 2009 06:02:07 +0000 (01:02 -0500)]
eeepc-laptop: fix oops when changing backlight brightness during eeepc-laptop init
I got the following oops while changing the backlight brightness during
startup. When it happens, it prevents use of the hotkeys, Fn-Fx, and the
lid button.
It's a clear use-before-init, as I verified by testing with an
appropriately-placed "else printk".
BUG: unable to handle kernel NULL pointer dereference at
00000000
*pde =
00000000
Oops: 0002 [#1] PREEMPT SMP
Pid: 160, comm: kacpi_notify Not tainted (2.6.28.1-eee901 #4) 901
EIP: 0060:[<
c0264e68>] [<
c0264e68>] eeepc_hotk_notify+26/da
EFLAGS:
00010246 CPU: 1
Using defaults from ksymoops -t elf32-i386 -a i386
EAX:
00000009 EBX:
00000000 ECX:
00000009 EDX:
f70dbf64
ESI:
00000029 EDI:
f7335188 EBP:
c02112c9 ESP:
f70dbf80
DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
f70731e0 f73acd50 c02164ac f7335180 f70aa040 c02112e6 f733518c c012b62f
f70aa044 f70aa040 c012bdba f70aa04c 00000000 c012be6e 00000000 f70bdf80
c012e198 f70dbfc4 f70dbfc4 f70aa040 c012bdba 00000000 c012e0c9 c012e091
Call Trace:
[<
c02164ac>] ? acpi_ev_notify_dispatch+4c/55
[<
c02112e6>] ? acpi_os_execute_deferred+1d/25
[<
c012b62f>] ? run_workqueue+71/f1
[<
c012bdba>] ? worker_thread+0/bf
[<
c012be6e>] ? worker_thread+b4/bf
[<
c012e198>] ? autoremove_wake_function+0/2b
[<
c012bdba>] ? worker_thread+0/bf
[<
c012e0c9>] ? kthread+38/5f
[<
c012e091>] ? kthread+0/5f
[<
c0103abf>] ? kernel_thread_helper+7/10
Code: 00 00 00 00 c3 83 3d 60 5c 50 c0 00 56 89 d6 53 0f 84 c4 00 00 00 8d 42
e0 83 f8 0f 77 0f 8b 1d 68 5c 50 c0 89 d8 e8 a9 fa ff ff <89> 03 8b 1d 60 5c
50 c0 89 f2 83 e2 7f 0f b7 4c 53 10 8d 41 01
Signed-off-by: Darren Salt <linux@youmustbejoking.demon.co.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
Myron Stowe [Fri, 30 Jan 2009 22:44:53 +0000 (15:44 -0700)]
ACPICA: Fix table entry truncation calculation
During early boot, ACPI RSDT/XSDT table entries are gathered into the
'initial_tables[]' array. This array is currently statically defined (see
./drivers/acpi/tables.c). When there are more table entries than can be
held in the 'initial_tables[]' array, the message "Truncating N table
entries!" is output. As currently implemented, this message will always
erroneously calculate N as 0.
This patch fixes the calculation that determines how many table entries
will be missing (truncated).
This modification may be used under either the GPL or the BSD-style
license used for Intel ACPI CA code.
Signed-off-by: Myron Stowe <myron.stowe@hp.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
Pallipadi, Venkatesh [Mon, 2 Feb 2009 19:57:18 +0000 (11:57 -0800)]
ACPI: Enable bit 11 in _PDC to advertise hw coord
Bit 11 in intel PDC definitions is meant for OS capability to handle
hardware coordination of P-states. In Linux we have always supported
hwardware coordination of P-states. Just let the BIOSes know that we
support it, by setting this bit.
Some BIOSes use this bit to choose between hardware or software coordination
and without this change below, BIOSes switch to software coordination, which
is not very optimal in terms of power consumption and extra wakeups from idle.
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Kay Sievers [Sun, 25 Jan 2009 22:40:56 +0000 (23:40 +0100)]
ACPI: struct device - replace bus_id with dev_name(), dev_set_name()
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
Frank Seidel [Wed, 4 Feb 2009 16:03:07 +0000 (17:03 +0100)]
ACPI: add missing KERN_* constants to printks
According to kerneljanitors todo list all printk calls (beginning
a new line) should have an according KERN_* constant.
Those are the missing peaces here for the acpi subsystem.
Signed-off-by: Frank Seidel <frank@f-seidel.de>
Signed-off-by: Len Brown <len.brown@intel.com>
Holger Macht [Tue, 20 Jan 2009 11:18:24 +0000 (12:18 +0100)]
ACPI: dock: Don't eval _STA on every show_docked sysfs read
Some devices trigger a DEVICE_CHECK on every evalutation of _STA. This
can also be seen in commit
8b59560a3baf2e7c24e0fb92ea5d09eca92805db
(ACPI: dock: avoid check _STA method). If an undock is processed, the
dock driver sends a uevent and userspace might read the show_docked
property in sysfs. This causes an evaluation of _STA of the particular
device which causes the dock driver to immediately dock again.
In any case, evaluation of _STA (show_docked) does not necessarily mean
that we are docked, so check with the internal device structure.
http://bugzilla.kernel.org/show_bug.cgi?id=12360
Signed-off-by: Holger Macht <hmacht@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
Linus Torvalds [Sat, 7 Feb 2009 02:52:55 +0000 (18:52 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/jmorris/security-testing-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6:
CRED: Fix SUID exec regression
Linus Torvalds [Sat, 7 Feb 2009 02:37:22 +0000 (18:37 -0800)]
Merge git://git./linux/kernel/git/mason/btrfs-unstable
* git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable: (37 commits)
Btrfs: Make sure dir is non-null before doing S_ISGID checks
Btrfs: Fix memory leak in cache_drop_leaf_ref
Btrfs: don't return congestion in write_cache_pages as often
Btrfs: Only prep for btree deletion balances when nodes are mostly empty
Btrfs: fix btrfs_unlock_up_safe to walk the entire path
Btrfs: change btrfs_del_leaf to drop locks earlier
Btrfs: Change btrfs_truncate_inode_items to stop when it hits the inode
Btrfs: Don't try to compress pages past i_size
Btrfs: join the transaction in __btrfs_setxattr
Btrfs: Handle SGID bit when creating inodes
Btrfs: Make btrfs_drop_snapshot work in larger and more efficient chunks
Btrfs: Change btree locking to use explicit blocking points
Btrfs: hash_lock is no longer needed
Btrfs: disable leak debugging checks in extent_io.c
Btrfs: sort references by byte number during btrfs_inc_ref
Btrfs: async threads should try harder to find work
Btrfs: selinux support
Btrfs: make btrfs acls selectable
Btrfs: Catch missed bios in the async bio submission thread
Btrfs: fix readdir on 32 bit machines
...
Tyler Hicks [Sat, 7 Feb 2009 00:06:51 +0000 (18:06 -0600)]
eCryptfs: Regression in unencrypted filename symlinks
The addition of filename encryption caused a regression in unencrypted
filename symlink support. ecryptfs_copy_filename() is used when dealing
with unencrypted filenames and it reported that the new, copied filename
was a character longer than it should have been.
This caused the return value of readlink() to count the NULL byte of the
symlink target. Most applications don't care about the extra NULL byte,
but a version control system (bzr) helped in discovering the bug.
Signed-off-by: Tyler Hicks <tyhicks@linux.vnet.ibm.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Sat, 7 Feb 2009 02:36:02 +0000 (18:36 -0800)]
Merge branch 'x86/fixes' of git://git./linux/kernel/git/frob/linux-2.6-roland
* 'x86/fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/frob/linux-2.6-roland:
x86-64: fix int $0x80 -ENOSYS return
Roland McGrath [Sat, 7 Feb 2009 02:15:18 +0000 (18:15 -0800)]
x86-64: fix int $0x80 -ENOSYS return
One of my past fixes to this code introduced a different new bug.
When using 32-bit "int $0x80" entry for a bogus syscall number,
the return value is not correctly set to -ENOSYS. This only happens
when neither syscall-audit nor syscall tracing is enabled (i.e., never
seen if auditd ever started). Test program:
/* gcc -o int80-badsys -m32 -g int80-badsys.c
Run on x86-64 kernel.
Note to reproduce the bug you need auditd never to have started. */
#include <errno.h>
#include <stdio.h>
int
main (void)
{
long res;
asm ("int $0x80" : "=a" (res) : "0" (99999));
printf ("bad syscall returns %ld\n", res);
return res != -ENOSYS;
}
The fix makes the int $0x80 path match the sysenter and syscall paths.
Reported-by: Dmitry V. Levin <ldv@altlinux.org>
Signed-off-by: Roland McGrath <roland@redhat.com>
Linus Torvalds [Sat, 7 Feb 2009 02:10:04 +0000 (18:10 -0800)]
Merge branch 'to-linus' of git://git./linux/kernel/git/frob/linux-2.6-roland
* 'to-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/frob/linux-2.6-roland:
elf core dump: fix get_user use
Roland McGrath [Sat, 7 Feb 2009 01:34:07 +0000 (17:34 -0800)]
elf core dump: fix get_user use
The elf_core_dump() code does its work with set_fs(KERNEL_DS) in force,
so vma_dump_size() needs to switch back with set_fs(USER_DS) to safely
use get_user() for a normal user-space address.
Checking for VM_READ optimizes out the case where get_user() would fail
anyway. The vm_file check here was already superfluous given the control
flow earlier in the function, so that is a cleanup/optimization unrelated
to other changes but an obvious and trivial one.
Reported-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Roland McGrath <roland@redhat.com>
David Howells [Fri, 6 Feb 2009 11:45:46 +0000 (11:45 +0000)]
CRED: Fix SUID exec regression
The patch:
commit
a6f76f23d297f70e2a6b3ec607f7aeeea9e37e8d
CRED: Make execve() take advantage of copy-on-write credentials
moved the place in which the 'safeness' of a SUID/SGID exec was performed to
before de_thread() was called. This means that LSM_UNSAFE_SHARE is now
calculated incorrectly. This flag is set if any of the usage counts for
fs_struct, files_struct and sighand_struct are greater than 1 at the time the
determination is made. All of which are true for threads created by the
pthread library.
However, since we wish to make the security calculation before irrevocably
damaging the process so that we can return it an error code in the case where
we decide we want to reject the exec request on this basis, we have to make the
determination before calling de_thread().
So, instead, we count up the number of threads (CLONE_THREAD) that are sharing
our fs_struct (CLONE_FS), files_struct (CLONE_FILES) and sighand_structs
(CLONE_SIGHAND/CLONE_THREAD) with us. These will be killed by de_thread() and
so can be discounted by check_unsafe_exec().
We do have to be careful because CLONE_THREAD does not imply FS or FILES.
We _assume_ that there will be no extra references to these structs held by the
threads we're going to kill.
This can be tested with the attached pair of programs. Build the two programs
using the Makefile supplied, and run ./test1 as a non-root user. If
successful, you should see something like:
[dhowells@andromeda tmp]$ ./test1
--TEST1--
uid=4043, euid=4043 suid=4043
exec ./test2
--TEST2--
uid=4043, euid=0 suid=0
SUCCESS - Correct effective user ID
and if unsuccessful, something like:
[dhowells@andromeda tmp]$ ./test1
--TEST1--
uid=4043, euid=4043 suid=4043
exec ./test2
--TEST2--
uid=4043, euid=4043 suid=4043
ERROR - Incorrect effective user ID!
The non-root user ID you see will depend on the user you run as.
[test1.c]
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <pthread.h>
static void *thread_func(void *arg)
{
while (1) {}
}
int main(int argc, char **argv)
{
pthread_t tid;
uid_t uid, euid, suid;
printf("--TEST1--\n");
getresuid(&uid, &euid, &suid);
printf("uid=%d, euid=%d suid=%d\n", uid, euid, suid);
if (pthread_create(&tid, NULL, thread_func, NULL) < 0) {
perror("pthread_create");
exit(1);
}
printf("exec ./test2\n");
execlp("./test2", "test2", NULL);
perror("./test2");
_exit(1);
}
[test2.c]
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
int main(int argc, char **argv)
{
uid_t uid, euid, suid;
getresuid(&uid, &euid, &suid);
printf("--TEST2--\n");
printf("uid=%d, euid=%d suid=%d\n", uid, euid, suid);
if (euid != 0) {
fprintf(stderr, "ERROR - Incorrect effective user ID!\n");
exit(1);
}
printf("SUCCESS - Correct effective user ID\n");
exit(0);
}
[Makefile]
CFLAGS = -D_GNU_SOURCE -Wall -Werror -Wunused
all: test1 test2
test1: test1.c
gcc $(CFLAGS) -o test1 test1.c -lpthread
test2: test2.c
gcc $(CFLAGS) -o test2 test2.c
sudo chown root.root test2
sudo chmod +s test2
Reported-by: David Smith <dsmith@redhat.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: David Smith <dsmith@redhat.com>
Signed-off-by: James Morris <jmorris@namei.org>
Dave Kleikamp [Fri, 6 Feb 2009 20:59:26 +0000 (14:59 -0600)]
vfs: Don't call attach_nobh_buffers() with an empty list
This is a modification of a patch by Bill Pemberton <wfp5p@virginia.edu>
nobh_write_end() could call attach_nobh_buffers() with head == NULL.
This would result in a trap when attach_nobh_buffers() attempted to
access bh->b_this_page.
This can be illustrated by running the writev01 testcase from LTP on jfs.
This error was introduced by commit
5b41e74a "vfs: fix data leak in
nobh_write_end()". That patch did not take into account that if
PageMappedToDisk() is true upon entry to nobh_write_begin(), then no
buffers will be allocated for the page. In that case, we won't have to
worry about a failed write leaving unitialized data in the page.
Of course, head != NULL implies !page_has_buffers(page), so no need to
test both.
Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
Cc: Bill Pemberton <wfp5p@virginia.edu>
Cc: Dmitri Monakhov <dmonakhov@openvz.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Fri, 6 Feb 2009 19:14:23 +0000 (11:14 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/tiwai/sound-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
ALSA: hda - Add missing COEF initialization for ALC887
ALSA: hda - Add missing initialization for ALC272
sound: usb-audio: handle wMaxPacketSize for FIXED_ENDPOINT devices
ALSA: hda - Fix misc workqueue issues
ALSA: hda - Add quirk for FSC Amilo Xi2550
Len Brown [Fri, 6 Feb 2009 19:00:56 +0000 (14:00 -0500)]
ACPI: disable ACPI cleanly when bad RSDP found
When ACPI is disabled in the BIOS of this VIA C3 box,
it invalidates the RSDP, which Linux notices:
ACPI Error (tbxfroot-0218): A valid RSDP was not found [
20080926]
Bug Linux neglected to disable ACPI at that stage,
and later scribbled on smp_found_config:
ACPI: No APIC-table, disabling MPS
But this box doesn't run well in legacy PIC mode,
it needed IOAPIC mode to perform correctly:
http://lkml.org/lkml/2009/2/5/39
So exit ACPI mode cleanly when we first detect
that it is hopeless.
Signed-off-by: Len Brown <len.brown@intel.com>
Len Brown [Fri, 6 Feb 2009 17:24:17 +0000 (12:24 -0500)]
ACPI: delete CPU_IDLE=n code
CPU_IDLE=y has been default for ACPI=y since Nov-2007,
and has shipped in many distributions since then.
Here we delete the CPU_IDLE=n ACPI idle code, since
nobody should be using it, and we don't want to
maintain two versions.
Signed-off-by: Len Brown <len.brown@intel.com>
Linus Torvalds [Fri, 6 Feb 2009 16:48:16 +0000 (08:48 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/ieee1394/linux1394-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6:
ieee1394: dv1394: move deprecation message from module init to file open
firewire: core: Remove card from list of cards when enable fails
Uwe Kleine-König [Fri, 6 Feb 2009 13:53:18 +0000 (14:53 +0100)]
Add Sascha Hauer to .mailmap
This fixes the shortlog attribution e.g. for
106757b38fff
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Uwe Kleine-König [Fri, 6 Feb 2009 13:53:19 +0000 (14:53 +0100)]
add another mailmap entry for Uwe Kleine-König
I created commit
7971db5a4b4176ad5df590fce07a962c643a2740 on a machine
where I forgot to set user.name and user.email before. The default
values were not optimal.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Li Zefan [Fri, 6 Feb 2009 08:17:19 +0000 (08:17 +0000)]
fork.c: fix NULL pointer dereference when nr_threads == threads-max
I happened to forked lots of processes, and hit NULL pointer dereference.
It is because in copy_process() after checking max_threads, 0 is returned
but not -EAGAIN.
The bug is introduced by "CRED: Detach the credentials from task_struct"
(commit
f1752eec6145c97163dbce62d17cf5d928e28a27).
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: James Morris <jmorris@namei.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Chris Mason [Fri, 6 Feb 2009 16:35:57 +0000 (11:35 -0500)]
Btrfs: Make sure dir is non-null before doing S_ISGID checks
The S_ISGID check in btrfs_new_inode caused an oops during subvol creation
because sometimes the dir is null.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Linus Torvalds [Fri, 6 Feb 2009 15:41:10 +0000 (07:41 -0800)]
Merge branch 'for-linus' of git://neil.brown.name/md
* 'for-linus' of git://neil.brown.name/md:
md: Ensure an md array never has too many devices.
md: Fix a bug in linear.c causing which_dev() to return the wrong device.
md: Allow read error in a single drive raid1 to be passed up.
Stefan Richter [Tue, 3 Feb 2009 16:54:31 +0000 (17:54 +0100)]
ieee1394: dv1394: move deprecation message from module init to file open
On many Linux installations, the dv1394 driver will be auto-loaded
whenever an AV/C device (e.g. camcorder or audio device) is plugged in.
An irritating message would then appear in the kernel log.
Defer this message to until a dv1394 character device file is actually
used by a program. Also include the program name in the message and
update the message slightly.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Takashi Iwai [Fri, 6 Feb 2009 13:25:13 +0000 (14:25 +0100)]
Merge branch 'fix/usb-audio' into for-linus
Takashi Iwai [Fri, 6 Feb 2009 13:25:04 +0000 (14:25 +0100)]
Merge branch 'fix/hda' into for-linus
Takashi Iwai [Fri, 6 Feb 2009 11:46:59 +0000 (12:46 +0100)]
ALSA: hda - Add missing COEF initialization for ALC887
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Iwai [Fri, 6 Feb 2009 11:45:52 +0000 (12:45 +0100)]
ALSA: hda - Add missing initialization for ALC272
ALC272 needs EAPD for speaker outputs as well as other similar ALC
codecs.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Clemens Ladisch [Fri, 6 Feb 2009 07:13:07 +0000 (08:13 +0100)]
sound: usb-audio: handle wMaxPacketSize for FIXED_ENDPOINT devices
For audio devices that do not have proper audio descriptors (e.g.,
Edirol UA-20), we use hardcoded parameters from our quirks list.
However, we must still read the maximum packet size from the standard
endpoint descriptor; otherwise, we might use packets that are too big
and therefore rejected by the USB core.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Cc: <stable@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
NeilBrown [Fri, 6 Feb 2009 07:02:46 +0000 (18:02 +1100)]
md: Ensure an md array never has too many devices.
Each different metadata format supported by md supports a
different maximum number of devices.
We really should be enforcing this maximum in the kernel, but
we aren't quite doing that properly.
We currently only enforce it at the 'hot_add' point, which is an
older interface which is not used by current userspace.
We need to also enforce it at 'add_new_disk' time for active arrays
and at 'do_md_run' time when starting a new array.
So move the test from 'hot_add' into 'bind_rdev_to_array' which is
called from both 'hot_add' and 'add_new_disk, and add a new
test in 'analyse_sbs' which is called from 'do_md_run'.
This bug (or missing feature) has been around "forever" and so
the patch is suitable for any -stable that is currently maintained.
Cc: stable@kernel.org
Signed-off-by: NeilBrown <neilb@suse.de>
Andre Noll [Fri, 6 Feb 2009 04:10:52 +0000 (15:10 +1100)]
md: Fix a bug in linear.c causing which_dev() to return the wrong device.
ab5bd5cbc8d4b868378d062eed3d4240930fbb86 introduced the following
bug in linear software raid for large arrays on 32 bit machines:
which_dev() computes the device holding a given sector by shifting
down the sector number to a 32 bit range, dividing by the array
spacing and looking up the resulting index in the hash table of
the array.
Because the computed index might be slightly too small, a loop at
the end of which_dev() increases the index until the given sector
actually falls into the range of the device associated with that index.
The changes of the above mentioned commit caused this loop to check
whether the _index_ rather than the sector number is small enough,
effectively bypassing the loop and thus possibly returning the wrong
device.
As reported by Simon Kirby, this leads to errors such as
linear_make_request: Sector
2340486136 out of bounds on dev sdi:
156301312 sectors, offset
2109870464
Fix this bug by introducing a local variable for the index so that
the variable containing the passed sector is left unchanged.
Cc: stable@kernel.org
Signed-off-by: Andre Noll <maan@systemlinux.org>
Signed-off-by: NeilBrown <neilb@suse.de>
NeilBrown [Fri, 6 Feb 2009 04:06:47 +0000 (15:06 +1100)]
md: Allow read error in a single drive raid1 to be passed up.
If a raid1 only has a single working device and gets a read error,
we choose to simply return that error up to the filesystem (or whatever)
rather than failing the whole array.
However the codes doesn't quite do that. We attempt a readbalance
which allocates the same drive, so we retry the read - indefinitely.
Instead: If read_balance in the error case chooses the same drive that just
failed, treat it as a failure and don't retry.
Signed-off-by: NeilBrown <neilb@suse.de>
Masami Hiramatsu [Thu, 5 Feb 2009 22:12:39 +0000 (17:12 -0500)]
prevent kprobes from catching spurious page faults
Prevent kprobes from catching spurious faults which will cause infinite
recursive page-fault and memory corruption by stack overflow.
Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com>
Cc: <stable@kernel.org> [2.6.28.x]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Al Viro [Fri, 6 Feb 2009 00:32:27 +0000 (00:32 +0000)]
braino in sg_ioctl_trans()
... and yes, gcc is insane enough to eat that without complaint.
We probably want sparse to scream on those...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Fri, 6 Feb 2009 00:12:38 +0000 (16:12 -0800)]
Merge branch 'upstream-linus' of git://git./linux/kernel/git/mfasheh/ocfs2
* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mfasheh/ocfs2:
Revert "configfs: Silence lockdep on mkdir(), rmdir() and configfs_depend_item()"
Linus Torvalds [Fri, 6 Feb 2009 00:11:54 +0000 (16:11 -0800)]
Merge branch 'sh/for-2.6.29' of git://git./linux/kernel/git/lethal/sh-2.6
* 'sh/for-2.6.29' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6:
sh: Fix up T-bit error handling in SH-4A mutex fastpath.
sh: Fix up spurious syscall restarting.
sh: fcnvds fix with denormalized numbers on SH-4 FPU.
sh: Only reserve memory under CONFIG_ZERO_PAGE_OFFSET when it != 0.
sh: Handle calling csum_partial with misaligned data
sh: ap325rxa: Enable ov772x in defconfig.
sh: ap325rxa: Add ov772x support.
sh: ap325rxa: control camera power toggling.
sh: mach-migor: Enable ov772x and tw9910 in defconfig.
Linus Torvalds [Fri, 6 Feb 2009 00:11:32 +0000 (16:11 -0800)]
Merge git://git./linux/kernel/git/davem/net-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6:
Revert "tcp: Always set urgent pointer if it's beyond snd_nxt"
ipv6: Copy cork options in ip6_append_data
udp: Fix UDP short packet false positive
gianfar: Fix potential soft reset race
gianfar: Fix BD_LENGTH_MASK definition
cxgb3: Fix lro switch
iwlwifi: save PCI state before suspend, restore after resume
iwlwifi: clean key table in iwl_clear_stations_table
David S. Miller [Thu, 5 Feb 2009 23:38:31 +0000 (15:38 -0800)]
Revert "tcp: Always set urgent pointer if it's beyond snd_nxt"
This reverts commit
64ff3b938ec6782e6585a83d5459b98b0c3f6eb8.
Jeff Chua reports that it breaks rlogin for him.
Signed-off-by: David S. Miller <davem@davemloft.net>
Herbert Xu [Thu, 5 Feb 2009 23:15:50 +0000 (15:15 -0800)]
ipv6: Copy cork options in ip6_append_data
As the options passed to ip6_append_data may be ephemeral, we need
to duplicate it for corking. This patch applies the simplest fix
which is to memdup all the relevant bits.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Thu, 5 Feb 2009 23:08:11 +0000 (15:08 -0800)]
Merge branch 'master' of git://git./linux/kernel/git/linville/wireless-2.6
Jesper Dangaard Brouer [Thu, 5 Feb 2009 23:05:45 +0000 (15:05 -0800)]
udp: Fix UDP short packet false positive
The UDP header pointer assignment must happen after calling
pskb_may_pull(). As pskb_may_pull() can potentially alter the SKB
buffer.
This was exposted by running multicast traffic through the NIU driver,
as it won't prepull the protocol headers into the linear area on
receive.
Signed-off-by: Jesper Dangaard Brouer <hawk@comx.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Alexey Dobriyan [Thu, 5 Feb 2009 21:30:05 +0000 (00:30 +0300)]
seq_file: fix big-enough lseek() + read()
lseek() further than length of the file will leave stale ->index
(second-to-last during iteration). Next seq_read() will not notice
that ->f_pos is big enough to return 0, but will print last item
as if ->f_pos is pointing to it.
Introduced in commit
cb510b8172602a66467f3551b4be1911f5a7c8c2
aka "seq_file: more atomicity in traverse()".
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Eric Biederman [Wed, 4 Feb 2009 23:12:25 +0000 (15:12 -0800)]
seq_file: move traverse so it can be used from seq_read
In 2.6.25 some /proc files were converted to use the seq_file
infrastructure. But seq_files do not correctly support pread(), which
broke some usersapce applications.
To handle pread correctly we can't assume that f_pos is where we left it
in seq_read. So move traverse() so that we can eventually use it in
seq_read and do thus some day support pread().
Signed-off-by: Eric Biederman <ebiederm@xmission.com>
Cc: Paul Turner <pjt@google.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Dean Nelson [Wed, 4 Feb 2009 23:12:24 +0000 (15:12 -0800)]
sgi-xp: fix writing past the end of kzalloc()'d space
A missing type cast results in writing way beyond the end of a kzalloc()'d
memory segment resulting in slab corruption. But it seems like the better
solution is to define ->recv_msg_slots as a 'void *' rather than a
'struct xpc_notify_mq_msg_uv *' and add the type cast.
Signed-off-by: Dean Nelson <dcn@sgi.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Alexey Dobriyan [Wed, 4 Feb 2009 23:12:21 +0000 (15:12 -0800)]
alpha: fixup BUG macro
Do usual do {} while (0) dance, otherwise
fs/gfs2/util.c:99: error: expected expression before 'else'
drivers/scsi/lpfc/lpfc_sli.c:363: error: expected expression before 'else'
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Acked-by: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Richard Henderson <rth@twiddle.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Dan Carpenter [Wed, 4 Feb 2009 23:12:20 +0000 (15:12 -0800)]
sx.c: fix missed unlock_kernel() on error path in sx_fw_ioctl()
If we return directly with -EPERM then lock_kernel() is still held.
This was found with a code checker (http://repo.or.cz/w/smatch.git/).
[akpm@linux-foundation.org: fix another such path - missed func_exit()]
Signed-off-by: Dan Carpenter <error27@gmail.com>
Cc: <R.E.Wolff@BitWizard.nl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Randy Dunlap [Wed, 4 Feb 2009 23:12:20 +0000 (15:12 -0800)]
atyfb: fix CONFIG_ namespace violations
Fix namespace violations by changing non-kconfig CONFIG_ names to CNFG_*.
Fixes breakage in staging/, which adds a real CONFIG_PANEL.
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Manish Katiyar [Wed, 4 Feb 2009 23:12:19 +0000 (15:12 -0800)]
rtc-ds1390: fix compilation warnings in drivers/rtc/rtc-ds1390.c
drivers/rtc/rtc-ds1390.c:125: warning: unused variable 'rtc'
Signed-off-by: Manish Katiyar <mkatiyar@gmail.com>
Signed-off-by: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Mike Rapoport [Wed, 4 Feb 2009 23:12:18 +0000 (15:12 -0800)]
drivers/video/backlight: rename da903x to da903x_bl
Currently both da903x backlight and voltage reulator drivers have the
same name. Rename the backlight driver to allow use of both drivers as
modules.
Signed-off-by: Mike Rapoport <mike@compulab.co.il>
Acked-by: Eric Miao <eric.miao@marvell.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Hans-Christian Egtvedt [Wed, 4 Feb 2009 23:12:17 +0000 (15:12 -0800)]
atmel-ssc: fix misuse of dev_dbg when requested ssc instance is not found
The ssc pointer is not valid when the id is not found in the list.
Convert the message from a debug one into an error message and avoid
dereferencing the bad pointer.
Signed-off-by: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com>
Cc: Kay Sievers <kay.sievers@vrfy.org>
Cc: Huang Weiyi <weiyi.huang@gmail.com>
Acked-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Carsten Otte [Wed, 4 Feb 2009 23:12:16 +0000 (15:12 -0800)]
do_wp_page: fix regression with execute in place
Fix do_wp_page for VM_MIXEDMAP mappings.
In the case where pfn_valid returns 0 for a pfn at the beginning of
do_wp_page and the mapping is not shared writable, the code branches to
label `gotten:' with old_page == NULL.
In case the vma is locked (vma->vm_flags & VM_LOCKED), lock_page,
clear_page_mlock, and unlock_page try to access the old_page.
This patch checks whether old_page is valid before it is dereferenced.
The regression was introduced by "mlock: mlocked pages are unevictable"
(commit
b291f000393f5a0b679012b39d79fbc85c018233).
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Cc: Nick Piggin <npiggin@suse.de>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: <stable@kernel.org> [2.6.28.x]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Johannes Weiner [Wed, 4 Feb 2009 23:12:14 +0000 (15:12 -0800)]
wait: prevent exclusive waiter starvation
With exclusive waiters, every process woken up through the wait queue must
ensure that the next waiter down the line is woken when it has finished.
Interruptible waiters don't do that when aborting due to a signal. And if
an aborting waiter is concurrently woken up through the waitqueue, noone
will ever wake up the next waiter.
This has been observed with __wait_on_bit_lock() used by
lock_page_killable(): the first contender on the queue was aborting when
the actual lock holder woke it up concurrently. The aborted contender
didn't acquire the lock and therefor never did an unlock followed by
waking up the next waiter.
Add abort_exclusive_wait() which removes the process' wait descriptor from
the waitqueue, iff still queued, or wakes up the next waiter otherwise.
It does so under the waitqueue lock. Racing with a wake up means the
aborting process is either already woken (removed from the queue) and will
wake up the next waiter, or it will remove itself from the queue and the
concurrent wake up will apply to the next waiter after it.
Use abort_exclusive_wait() in __wait_event_interruptible_exclusive() and
__wait_on_bit_lock() when they were interrupted by other means than a wake
up through the queue.
[akpm@linux-foundation.org: coding-style fixes]
Reported-by: Chris Mason <chris.mason@oracle.com>
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Mentored-by: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Matthew Wilcox <matthew@wil.cx>
Cc: Chuck Lever <cel@citi.umich.edu>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: <stable@kernel.org> ["after some testing"]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Randy Dunlap [Wed, 4 Feb 2009 23:12:13 +0000 (15:12 -0800)]
maintainers: general@lists.openfabrics.org is moderated
I got the "list is moderated message," so add it here.
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Roland Dreier <rolandd@cisco.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Martin Kebert [Wed, 4 Feb 2009 23:12:12 +0000 (15:12 -0800)]
lis3lv02d: add axes knowledge for HP 6710
Add support for the HP laptops of model 6710x for having correctly setup
axes.
Signed-off-by: Martin Kebert <gkmarty@gmail.com>
Signed-off-by: Eric Piel <eric.piel@tremplin-utc.net>
Acked-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Pavel Herrmann [Wed, 4 Feb 2009 23:12:11 +0000 (15:12 -0800)]
lis3lv02d: add axes knowledge for HP 6730
Add support for the HP laptops of model 6730x for having correctly setup
axes.
Signed-off-by: Pavel Herrmann <morpheus.ibis@gmail.com>
Signed-off-by: Eric Piel <eric.piel@tremplin-utc.net>
Acked-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Eric Piel [Wed, 4 Feb 2009 23:12:11 +0000 (15:12 -0800)]
lis3lv02d: add axes knowledge for HP 6530
Add support for the HP laptops of model 6530x for having correctly setup
axes.
Reported-by: Jerome Poulin <jeromepoulin@gmail.com>
Signed-off-by: Eric Piel <eric.piel@tremplin-utc.net>
Acked-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Jiri Tersel [Wed, 4 Feb 2009 23:12:09 +0000 (15:12 -0800)]
lis3lv02d: add axes knowledge for HP 6510b
According to dmesg my laptop model HP 6510b is not being recognized by this
driver. After I have modified "lis3lv02d.c" axes in Neverball are OK.
Signed-off-by: Jiri Tersel <tersel@mail.muni.cz>
Signed-off-by: Eric Piel <eric.piel@tremplin-utc.net>
Acked-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Andrew Morton [Wed, 4 Feb 2009 23:12:07 +0000 (15:12 -0800)]
hp-wmi: fix error path in hp_wmi_bios_setup()
The error-path code can call rfkill_unregister() with a pointer which does
not contain the result of a call to rfkill_register(). It goes BUG().
Addresses http://bugzilla.kernel.org/show_bug.cgi?id=12560.
Cc: Frans Pop <elendil@planet.nl>
Cc: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Len Brown <lenb@kernel.org>
Acked-by: Matthew Garrett <mjg@redhat.com>
Reported-by: Helge Deller <deller@gmx.de>
Testted-by: Helge Deller <deller@gmx.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>