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git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6
* 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6:
drm/radeon/kms: add LTE/GTE discard + rv515 two sided stencil register.
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This adds some rv350+ register for LTE/GTE discard,
and enables the rv515 two sided stencil register.
It also disables the DEPTHXY_OFFSET register which
can be used to workaround the CS checker.
Moves rs690 to proper place in rs600 and uses correct
table on rs600.
Signed-off-by: Dave Airlie <airlied@redhat.com>
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git://git.kernel.org/pub/scm/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:
IMA: update ima_counts_put
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- As ima_counts_put() may be called after the inode has been freed,
verify that the inode is not NULL, before dereferencing it.
- Maintain the IMA file counters in may_open() properly, decrementing
any counter increments on subsequent errors.
Reported-by: Ciprian Docan <docan@eden.rutgers.edu>
Reported-by: J.R. Okajima <hooanon05@yahoo.co.jp>
Signed-off-by: Mimi Zohar <zohar@us.ibm.com>
Acked-by: Eric Paris <eparis@redhat.com
Signed-off-by: James Morris <jmorris@namei.org>
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* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6:
gianfar: Fix build.
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Reported by Michael Guntsche <mike@it-loops.com>
--------------------
Commit
38bddf04bcfe661fbdab94888c3b72c32f6873b3 gianfar: gfar_remove needs to call unregister_netdev()
breaks the build of the gianfar driver because "dev" is undefined in
this function. To quickly test rc9 I changed this to priv->ndev but I do
not know if this is the correct one.
--------------------
Signed-off-by: David S. Miller <davem@davemloft.net>
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* git://git.kernel.org/pub/scm/linux/kernel/git/davem/ide-2.6:
pcmcia: add CNF-CDROM-ID for ide
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Fixes this report:
http://article.gmane.org/gmane.linux.kernel.pcmcia.devel/2228/
Reported-by: John McGrath <john@john-mcgrath.com>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/anholt/drm-intel
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/anholt/drm-intel:
agp/intel: support for new chip variant of IGDNG mobile
drm/i915: Unref old_obj on get_fence_reg() error path
drm/i915: increase default latency constant (v2 w/comment)
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New variant of IGDNG mobile chip has new host bridge id.
[anholt: Note that this new PCI ID doesn't impact the DRM, which doesn't
care about the PCI ID of the bridge]
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
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Remember to release the local reference if we fail to wait on
the rendering.
(Also whilst in the vicinity add some whitespace so that the phasing of
the operations is clearer.)
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Eric Anholt <eric@anholt.net>
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Some i915/i945 platforms have a fairly high memory latency in certain
situations, so increase our constant a bit to avoid FIFO underruns.
The effect should be positive on other platforms as well; we'll have a
bit more insurance against a busy memory subsystem due to the extra
FIFO entries.
Fixes fdo bug #23368. Needed for 2.6.31.
Tested-by: Sven Arvidsson <sa@whiz.se>
Tested-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Eric Anholt <eric@anholt.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6:
firewire: sbp2: fix freeing of unallocated memory
firewire: ohci: fix Ricoh R5C832, video reception
firewire: ohci: fix Agere FW643 and multiple cameras
firewire: core: fix crash in iso resource management
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If a target writes invalid status (typically status of a command that
already timed out), firewire-sbp2 attempts to put away an ORB that
doesn't exist. https://bugzilla.redhat.com/show_bug.cgi?id=519772
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
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In dual-buffer DMA mode, no video frames are ever received from R5C832
by libdc1394. Fallback to packet-per-buffer DMA works reliably.
http://thread.gmane.org/gmane.linux.kernel.firewire.devel/13393/focus=13476
Reported-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
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An Agere FW643 OHCI 1.1 card works fine for video reception from one
camera but fails early if receiving from two cameras. After a short
while, no IR IRQ events occur and the context control register does not
react anymore. This happens regardless whether both IR DMA contexts are
dual-buffer or one is dual-buffer and the other packet-per-buffer.
This can be worked around by disabling dual buffer DMA mode entirely.
http://sourceforge.net/mailarchive/message.php?msg_name=4A7C0594.2020208%40gmail.com
(Reported by Samuel Audet.)
In another report (by Jonathan Cameron), an FW643 works OK with two
cameras in dual buffer mode. Whether this is due to different chip
revisions or different usage patterns (different video formats) is not
yet clear. However, as far as the current capabilities of
firewire-core's isochronous I/O interface are concerned, simply
switching off dual-buffer on non-working and working FW643s alike is not
a problem in practice. We only need to revisit this issue if we are
going to enhance the interface, e.g. so that applications can explicitly
choose modes.
Reported-by: Samuel Audet <samuel.audet@gmail.com>
Reported-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
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This fixes a regression due to post 2.6.30 commit "firewire: core: do
not DMA-map stack addresses" 6fdc03709433ccc2005f0f593ae9d9dd04f7b485.
As David Moore noted, a previously correct sizeof() expression became
wrong since the commit changed its argument from an array to a pointer.
This resulted in an oops in ohci_cancel_packet in the shared workqueue
thread's context when an isochronous resource was to be freed.
Reported-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
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This patch fixes a null pointer exception caused by removal of
'ack()' for level interrupts in the Xilinx interrupt driver. A recent
change to the xilinx interrupt controller removed the ack hook for
level irqs.
Signed-off-by: Roderick Colenbrander <thunderbird2k@gmail.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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* git://git.infradead.org/~dwmw2/mtd-2.6.31:
JFFS2: add missing verify buffer allocation/deallocation
mtd: nftl: fix offset alignments
mtd: nftl: write support is broken
mtd: m25p80: fix null pointer dereference bug
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The function jffs2_nor_wbuf_flash_setup() doesn't allocate the verify buffer
if CONFIG_JFFS2_FS_WBUF_VERIFY is defined, so causing a kernel panic when
that macro is enabled and the verify function is called. Similarly the
jffs2_nor_wbuf_flash_cleanup() must free the buffer if
CONFIG_JFFS2_FS_WBUF_VERIFY is enabled.
The following patch fixes the problem.
The following patch applies to 2.6.30 kernel.
Signed-off-by: Massimo Cirillo <maxcir@gmail.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Cc: stable@kernel.org
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Arithmetic conversion in the mask computation makes the upper word
of the second argument passed down to mtd->read_oob(), be always 0
(assuming 'offs' being a 64-bit signed long long type, and
'mtd->writesize' being a 32-bit unsigned int type).
This patch applies over the other one adding masking in nftl_write,
"nftl: write support is broken".
Signed-off-by: Dimitri Gorokhovik <dimitri.gorokhovik@free.fr>
Cc: Tim Gardner <tim.gardner@canonical.com>
Cc: Scott James Remnant <scott@canonical.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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Write support is broken in NFTL. Fix it.
Signed-off-by: <dimitri.gorokhovik@free.fr>
Cc: Tim Gardner <tim.gardner@canonical.com>
Cc: Scott James Remnant <scott@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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This patch fixes the following oops, observed with MTD_PARTITIONS=n:
m25p80 spi32766.0: m25p80 (1024 Kbytes)
Unable to handle kernel paging request for data at address 0x00000008
Faulting instruction address: 0xc03a54b0
Oops: Kernel access of bad area, sig: 11 [#1]
Modules linked in:
NIP: c03a54b0 LR: c03a5494 CTR: c01e98b8
REGS: ef82bb60 TRAP: 0300 Not tainted (2.6.31-rc4-00167-g4733fd3)
MSR: 00029000 <EE,ME,CE> CR: 24022022 XER: 20000000
DEAR: 00000008, ESR: 00000000
TASK = ef82c000[1] 'swapper' THREAD: ef82a000
GPR00: 00000000 ef82bc10 ef82c000 0000002e 00001eb8 ffffffff c01e9824 00000036
GPR08: c054ed40 c0542a08 00001eb8 00004000 22022022 1001a1a0 3ff8fd00 00000000
GPR16: 00000000 00000001 00000000 00000000 ef82bddc c0530000 efbef500 ef8356d0
GPR24: 00000000 ef8356d0 00000000 efbf7a00 c0530ec4 ffffffed efbf5300 c0541f98
NIP [c03a54b0] m25p_probe+0x22c/0x354
LR [c03a5494] m25p_probe+0x210/0x354
Call Trace:
[ef82bc10] [c03a5494] m25p_probe+0x210/0x354 (unreliable)
[ef82bca0] [c024e37c] spi_drv_probe+0x2c/0x3c
[ef82bcb0] [c01f1afc] driver_probe_device+0xa4/0x178
[ef82bcd0] [c01f06e8] bus_for_each_drv+0x6c/0xa8
[ef82bd00] [c01f1a34] device_attach+0x84/0xa8
...
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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* 'for-linus' of git://git.kernel.dk/linux-2.6-block:
block: Allow changing max_sectors_kb above the default 512
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The patch "block: Use accessor functions for queue limits"
(ae03bf639a5027d27270123f5f6e3ee6a412781d) changed queue_max_sectors_store()
to use blk_queue_max_sectors() instead of directly assigning the value.
But blk_queue_max_sectors() differs a bit
1. It sets both max_sectors_kb, and max_hw_sectors_kb
2. Never allows one to change max_sectors_kb above BLK_DEF_MAX_SECTORS. If one
specifies a value greater then max_hw_sectors is set to that value but
max_sectors is set to BLK_DEF_MAX_SECTORS
I am not sure whether blk_queue_max_sectors() should be changed, as it seems
to be that way for a long time. And there may be callers dependent on that
behaviour.
This patch simply reverts to the older way of directly assigning the value to
max_sectors as it was before.
Signed-off-by: Nikanth Karthikesan <knikanth@suse.de>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6
* 'fix/oxygen' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
sound: oxygen: handle cards with missing EEPROM
sound: oxygen: fix MCLK rate for 192 kHz playback
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The card model detection code introduced in 2.6.30 that tries to work
around partially broken EEPROM contents by reading the EEPROM directly
does not handle cards where the EEPROM has been omitted. In this case,
we have to use the default ID to allow the driver to load.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Reported-and-tested-by: Ozan Çağlayan <ozan@pardus.org.tr>
Cc: <stable@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Do not forget to program the MCLK ratio for the I2S output.
Otherwise, the master clock frequency can be too high for
the DACs at sample frequencies above 96 kHz.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Cc: <stable@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6:
tc: Fix unitialized kernel memory leak
pkt_sched: Revert tasklet_hrtimer changes.
net: sk_free() should be allowed right after sk_alloc()
gianfar: gfar_remove needs to call unregister_netdev()
ipw2200: firmware DMA loading rework
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Three bytes of uninitialized kernel memory are currently leaked to user
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Reviewed-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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These are full of unresolved problems, mainly that conversions don't
work 1-1 from hrtimers to tasklet_hrtimers because unlike hrtimers
tasklets can't be killed from softirq context.
And when a qdisc gets reset, that's exactly what we need to do here.
We'll work this out in the net-next-2.6 tree and if warranted we'll
backport that work to -stable.
This reverts the following 3 changesets:
a2cb6a4dd470d7a64255a10b843b0d188416b78f
("pkt_sched: Fix bogon in tasklet_hrtimer changes.")
38acce2d7983632100a9ff3fd20295f6e34074a8
("pkt_sched: Convert CBQ to tasklet_hrtimer.")
ee5f9757ea17759e1ce5503bdae2b07e48e32af9
("pkt_sched: Convert qdisc_watchdog to tasklet_hrtimer")
Signed-off-by: David S. Miller <davem@davemloft.net>
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After commit 2b85a34e911bf483c27cfdd124aeb1605145dc80
(net: No more expensive sock_hold()/sock_put() on each tx)
sk_free() frees socks conditionally and depends
on sk_wmem_alloc being set e.g. in sock_init_data(). But in some
cases sk_free() is called earlier, usually after other alloc errors.
Fix is to move sk_wmem_alloc initialization from sock_init_data()
to sk_alloc() itself.
Signed-off-by: Jarek Poplawski <jarkao2@gmail.com>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch solves the problem that the Oops(BUG_ON) occurs by rmmod.
# rmmod gianfar_driver
------------[ cut here ]------------
Kernel BUG at c01fec48 [verbose debug info unavailable]
Oops: Exception in kernel mode, sig: 5 [#1]
MPC837x MDS
Modules linked in: gianfar_driver(-) usb_storage scsi_wait_scan
NIP: c01fec48 LR: c01febf4 CTR: c01feba8
REGS: dec5bd60 TRAP: 0700 Tainted: G W (2.6.31-rc2)
MSR: 00029032 <EE,ME,CE,IR,DR> CR: 22000424 XER: 20000000
TASK = dec4cac0[1135] 'rmmod' THREAD: dec5a000
GPR00: 00000002 dec5be10 dec4cac0 dfba1820 c035d444 c035d478 ffffffff 00000000
GPR08: 0000002b 00000001 dfba193c 00000001 22000424 10019b34 1ffcb000 00000000
GPR16: 10012008 00000000 bf82ebe0 100017ec bf82ebec bf82ebe8 bf82ebd0 00000880
GPR24: 00000000 bf82ebf0 c03532f0 c03532e4 c036b594 dfba183c dfba1800 dfba1820
NIP [c01fec48] free_netdev+0xa0/0xb8
LR [c01febf4] free_netdev+0x4c/0xb8
Call Trace:
[dec5be10] [c01febf4] free_netdev+0x4c/0xb8 (unreliable)
[dec5be30] [e105f290] gfar_remove+0x50/0x68 [gianfar_driver]
[dec5be40] [c01ec534] of_platform_device_remove+0x30/0x44
[dec5be50] [c0181760] __device_release_driver+0x68/0xc8
[dec5be60] [c0181868] driver_detach+0xa8/0xac
[dec5be80] [c0180814] bus_remove_driver+0x9c/0xd8
[dec5bea0] [c0181efc] driver_unregister+0x60/0x98
[dec5beb0] [c01ec650] of_unregister_driver+0x14/0x24
[dec5bec0] [e10631bc] gfar_exit+0x18/0x4bc [gianfar_driver]
[dec5bed0] [c0047584] sys_delete_module+0x16c/0x228
[dec5bf40] [c00116bc] ret_from_syscall+0x0/0x38
--- Exception: c01 at 0xff3669c
LR = 0x10000f34
Instruction dump:
409e0024 a07e00c0 7c63f050 4be74429 80010024 bba10014 38210020 7c0803a6
4e800020 68000003 3160ffff 7d2b0110 <0f090000> 38000004 387e01f0 901e01d4
---[ end trace 8c595bcd37230a0f ]---
localhost kernel: ------------[ cut here ]------------
Signed-off-by: Toru UCHIYAMA uchiyama.toru@jp.fujitsu.com
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6
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Bartlomiej Zolnierkiewicz reported an atomic order-6 allocation failure
for ipw2200 firmware loading in kernel 2.6.30. High order allocation is
likely to fail and should always be avoided.
The patch fixes this problem by replacing the original order-6
pci_alloc_consistent() with an array of order-1 pages from a pci pool.
This utilized the ipw2200 DMA command blocks (up to 64 slots). The
maximum firmware size support remains the same (64*8K).
This patch fixes bug http://bugzilla.kernel.org/show_bug.cgi?id=14016
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Mel Gorman <mel@csn.ul.ie>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
crypto: skcipher - Fix skcipher_dequeue_givcrypt NULL test
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As struct skcipher_givcrypt_request includes struct crypto_request
at a non-zero offset, testing for NULL after converting the pointer
returned by crypto_dequeue_request does not work. This can result
in IPsec crashes when the queue is depleted.
This patch fixes it by doing the pointer conversion only when the
return value is non-NULL. In particular, we create a new function
__crypto_dequeue_request that does the pointer conversion.
Reported-by: Brad Bosch <bradbosch@comcast.net>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq
* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq:
[CPUFREQ] Re-enable cpufreq suspend and resume code
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Commit 4bc5d3413503 is broken and causes regressions:
(1) cpufreq_driver->resume() and ->suspend() were only called on
__powerpc__, but you could set them on all architectures. In fact,
->resume() was defined and used before the PPC-related commit
42d4dc3f4e1e complained about in 4bc5d3413503.
(2) Therfore, the resume functions in acpi_cpufreq and speedstep-smi
would never be called.
(3) This means speedstep-smi would be unusuable after suspend or resume.
The _real_ problem was calling cpufreq_driver->get() with interrupts
off, but it re-enabling interrupts on some platforms. Why is ->get()
necessary?
Some systems like to change the CPU frequency behind our
back, especially during BIOS-intensive operations like suspend or
resume. If such systems also use a CPU frequency-dependant timing loop,
delays might be off by large factors. Therefore, we need to ascertain
as soon as possible that the CPU frequency is indeed at the speed we
think it is. You can do this two ways: either setting it anew, or trying
to get it. The latter is what was done, the former also has the same IRQ
issue.
So, let's try something different: defer the checking to after interrupts
are re-enabled, by calling cpufreq_update_policy() (via schedule_work()).
Timings may be off until this later stage, so let's watch out for
resume regressions caused by the deferred handling of frequency changes
behind the kernel's back.
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: Dave Jones <davej@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6:
[IA64] fix csum_ipv6_magic()
[IA64] Fix warning in dma-mapping.c
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The 32-bit parameters (len and csum) of csum_ipv6_magic() are passed in 64-bit
registers in2 and in4. The high order 32 bits of the registers were never
cleared, and garbage was sometimes calculated into the checksum.
Fix this by clearing the high order 32 bits of these registers.
Signed-off-by: Jiri Bohac <jbohac@suse.cz>
Signed-off-by: Tony Luck <tony.luck@intel.com>
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arch/ia64/kernel/dma-mapping.c:14: warning: control reaches end of non-void function
arch/ia64/kernel/dma-mapping.c:14: warning: no return statement in function returning non-void
This warning was introduced by commit: 390bd132b2831a2ad0268e84bffbfc0680debfe5
Add dma_debug_init() for ia64
Signed-off-by: Tony Luck <tony.luck@intel.com>
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* 'for-linus' of git://oss.sgi.com/xfs/xfs:
xfs: actually enable the swapext compat handler
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Fix a small typo in the compat ioctl handler that cause the swapext
compat handler to never be called.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Torsten Kaiser <just.for.lkml@googlemail.com>
Tested-by: Torsten Kaiser <just.for.lkml@googlemail.com>
Reviewed-by: Eric Sandeen <sandeen@sandeen.net>
Reviewed-by: Felix Blyakher <felixb@sgi.com>
Signed-off-by: Felix Blyakher <felixb@sgi.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/ryusuke/nilfs2
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ryusuke/nilfs2:
nilfs2: fix preempt count underflow in nilfs_btnode_prepare_change_key
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This will fix the following preempt count underflow reported from
users with the title "[NILFS users] segctord problem" (Message-ID:
<949415.6494.qm@web58808.mail.re1.yahoo.com> and Message-ID:
<debc30fc0908270825v747c1734xa59126623cfd5b05@mail.gmail.com>):
WARNING: at kernel/sched.c:4890 sub_preempt_count+0x95/0xa0()
Hardware name: HP Compaq 6530b (KR980UT#ABC)
Modules linked in: bridge stp llc bnep rfcomm l2cap xfs exportfs nilfs2 cowloop loop vboxnetadp vboxnetflt vboxdrv btusb bluetooth uvcvideo videodev v4l1_compat v4l2_compat_ioctl32 arc4 snd_hda_codec_analog ecb iwlagn iwlcore rfkill lib80211 mac80211 snd_hda_intel snd_hda_codec ehci_hcd uhci_hcd usbcore snd_hwdep snd_pcm tg3 cfg80211 psmouse snd_timer joydev libphy ohci1394 snd_page_alloc hp_accel lis3lv02d ieee1394 led_class i915 drm i2c_algo_bit video backlight output i2c_core dm_crypt dm_mod
Pid: 4197, comm: segctord Not tainted 2.6.30-gentoo-r4-64 #7
Call Trace:
[<ffffffff8023fa05>] ? sub_preempt_count+0x95/0xa0
[<ffffffff802470f8>] warn_slowpath_common+0x78/0xd0
[<ffffffff8024715f>] warn_slowpath_null+0xf/0x20
[<ffffffff8023fa05>] sub_preempt_count+0x95/0xa0
[<ffffffffa04ce4db>] nilfs_btnode_prepare_change_key+0x11b/0x190 [nilfs2]
[<ffffffffa04d01ad>] nilfs_btree_assign_p+0x19d/0x1e0 [nilfs2]
[<ffffffffa04d10ad>] nilfs_btree_assign+0xbd/0x130 [nilfs2]
[<ffffffffa04cead7>] nilfs_bmap_assign+0x47/0x70 [nilfs2]
[<ffffffffa04d9bc6>] nilfs_segctor_do_construct+0x956/0x20f0 [nilfs2]
[<ffffffff805ac8e2>] ? _spin_unlock_irqrestore+0x12/0x40
[<ffffffff803c06e0>] ? __up_write+0xe0/0x150
[<ffffffff80262959>] ? up_write+0x9/0x10
[<ffffffffa04ce9f3>] ? nilfs_bmap_test_and_clear_dirty+0x43/0x60 [nilfs2]
[<ffffffffa04cd627>] ? nilfs_mdt_fetch_dirty+0x27/0x60 [nilfs2]
[<ffffffffa04db5fc>] nilfs_segctor_construct+0x8c/0xd0 [nilfs2]
[<ffffffffa04dc3dc>] nilfs_segctor_thread+0x15c/0x3a0 [nilfs2]
[<ffffffffa04dbe20>] ? nilfs_construction_timeout+0x0/0x10 [nilfs2]
[<ffffffff80252633>] ? add_timer+0x13/0x20
[<ffffffff802370da>] ? __wake_up_common+0x5a/0x90
[<ffffffff8025e960>] ? autoremove_wake_function+0x0/0x40
[<ffffffffa04dc280>] ? nilfs_segctor_thread+0x0/0x3a0 [nilfs2]
[<ffffffffa04dc280>] ? nilfs_segctor_thread+0x0/0x3a0 [nilfs2]
[<ffffffff8025e556>] kthread+0x56/0x90
[<ffffffff8020cdea>] child_rip+0xa/0x20
[<ffffffff8025e500>] ? kthread+0x0/0x90
[<ffffffff8020cde0>] ? child_rip+0x0/0x20
This problem was caused due to a missing radix_tree_preload() call in
the retry path of nilfs_btnode_prepare_change_key() function.
Reported-by: Eric A <eric225125@yahoo.com>
Reported-by: Jerome Poulin <jeromepoulin@gmail.com>
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Tested-by: Jerome Poulin <jeromepoulin@gmail.com>
Cc: stable@kernel.org
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git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu:
percpu: don't assume existence of cpu0
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percpu incorrectly assumed that cpu0 was always there which led to the
following warning and eventual oops on sparc machines w/o cpu0.
WARNING: at mm/percpu.c:651 pcpu_map+0xdc/0x100()
Modules linked in:
Call Trace:
[000000000045eb70] warn_slowpath_common+0x50/0xa0
[000000000045ebdc] warn_slowpath_null+0x1c/0x40
[00000000004d493c] pcpu_map+0xdc/0x100
[00000000004d59a4] pcpu_alloc+0x3e4/0x4e0
[00000000004d5af8] __alloc_percpu+0x18/0x40
[00000000005b112c] __percpu_counter_init+0x4c/0xc0
...
Unable to handle kernel NULL pointer dereference
...
I7: <sysfs_new_dirent+0x30/0x120>
Disabling lock debugging due to kernel taint
Caller[000000000053c1b0]: sysfs_new_dirent+0x30/0x120
Caller[000000000053c7a4]: create_dir+0x24/0xc0
Caller[000000000053c870]: sysfs_create_dir+0x30/0x80
Caller[00000000005990e8]: kobject_add_internal+0xc8/0x200
...
Kernel panic - not syncing: Attempted to kill the idle task!
This patch fixes the problem by backporting parts from devel branch to
make percpu core not depend on the existence of cpu0.
Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: Meelis Roos <mroos@linux.ee>
Cc: David Miller <davem@davemloft.net>
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