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119876 Commits

Author SHA1 Message Date
Andrew Morton 71c5576fbd revert "percpu counter: clean up percpu_counter_sum_and_set()"
Revert

    commit 1f7c14c62c
    Author: Mingming Cao <cmm@us.ibm.com>
    Date:   Thu Oct 9 12:50:59 2008 -0400

        percpu counter: clean up percpu_counter_sum_and_set()

Before this patch we had the following:

percpu_counter_sum(): return the percpu_counter's value

percpu_counter_sum_and_set(): return the percpu_counter's value, copying
that value into the central value and zeroing the per-cpu counters before
returning.

After this patch, percpu_counter_sum_and_set() has gone, and
percpu_counter_sum() gets the old percpu_counter_sum_and_set()
functionality.

Problem is, as Eric points out, the old percpu_counter_sum_and_set()
functionality was racy and wrong.  It zeroes out counters on "other" cpus,
without holding any locks which will prevent races agaist updates from
those other CPUS.

This patch reverts 1f7c14c62c.  This means
that percpu_counter_sum_and_set() still has the race, but
percpu_counter_sum() does not.

Note that this is not a simple revert - ext4 has since started using
percpu_counter_sum() for its dirty_blocks counter as well.

Note that this revert patch changes percpu_counter_sum() semantics.

Before the patch, a call to percpu_counter_sum() will bring the counter's
central counter mostly up-to-date, so a following percpu_counter_read()
will return a close value.

After this patch, a call to percpu_counter_sum() will leave the counter's
central accumulator unaltered, so a subsequent call to
percpu_counter_read() can now return a significantly inaccurate result.

If there is any code in the tree which was introduced after
e8ced39d5e was merged, and which depends
upon the new percpu_counter_sum() semantics, that code will break.

Reported-by: Eric Dumazet <dada1@cosmosbay.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mingming Cao <cmm@us.ibm.com>
Cc: <linux-ext4@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-12-10 08:01:52 -08:00
Eric Dumazet fd3d664fef percpu_counter: fix CPU unplug race in percpu_counter_destroy()
We should first delete the counter from percpu_counters list
before freeing memory, or a percpu_counter_hotcpu_callback()
could dereference a NULL pointer.

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Acked-by: David S. Miller <davem@davemloft.net>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mingming Cao <cmm@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-12-10 08:01:52 -08:00
Alessandro Zummo fe102c71a6 rtc: fix missing id_table in rtc-ds1672 and rtc-max6900 drivers
Add missing id_table to the drivers in subject.  Patch is against the
latest git.  It should go in with 2.6.28 if possible, the drivers won't
work without the id_table bits.

Signed-off-by: Alessandro Zummo <a.zummo@towertech.it>
Reported-by: Imre Kaloz <kaloz@openwrt.org>
Tested-by: Imre Kaloz <kaloz@openwrt.org>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-12-10 08:01:52 -08:00
Tom Zanussi fbb5b7ae4b relayfs: fix infinite loop with splice()
Running kmemtraced, which uses splice() on relayfs, causes a hard lock on
x86-64 SMP.  As described by Tom Zanussi:

  It looks like you hit the same problem as described here:

  commit 8191ecd1d1

      splice: fix infinite loop in generic_file_splice_read()

  relay uses the same loop but it never got noticed or fixed.

Cc: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Tested-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Tom Zanussi <tzanussi@gmail.com>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-12-10 08:01:52 -08:00
Balbir Singh 361371201b uml: boot broken due to buffer overrun
mconsole_init() passed 256 bytes as length in os_create_unix_socket, while
the sizeof UNIX_PATH_MAX is 108. This patch fixes that problem and avoids
a big overrun bug reported on UML bootup.

sockaddr_un.sun_path is UNIX_PATH_MAX long which causes the problem.
Reported-by: Vikas K Managutte <vikki.km@gmail.com>
Reported-by: Sarvesh Kumar Lal Das <skldas@gmail.com>
Signed-off-by: Balbir Singh <balbir@linux.vnet.ibm.com>
Reviewed-by: Pekka Enberg <penberg@cs.helsinki.fi>
Reviewed-by: WANG Cong <wangcong@zeuux.org>
Cc: Jeff Dike <jdike@addtoit.com>
Cc: <stable@kernel.org>		[please check with Jeff]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-12-10 08:01:52 -08:00
Andrew Morton 69fc208be5 mm/backing-dev.c: remove recently-added WARN_ON()
On second thoughts, this is just going to disturb people while telling us
things which we already knew.

Cc: Peter Korsgaard <jacmet@sunsite.dk>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Kay Sievers <kay.sievers@vrfy.org>
Cc: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-12-10 08:01:52 -08:00
Herbert Xu 6a0fcbb4da crypto: api - Disallow cryptomgr as a module if algorithms are built-in
If we have at least one algorithm built-in then it no longer makes
sense to have the testing framework, and hence cryptomgr to be a
module.  It should be either on or off, i.e., built-in or disabled.

This just happens to stop a potential runaway modprobe loop that
seems to trigger on at least one distro.

With fixes from Evgeniy Polyakov.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-12-10 23:29:44 +11:00
Stefan Richter 1d1dc5e83f firewire: fw-ohci: fix IOMMU resource exhaustion
There is a DMA map/ unmap imbalance whenever a block write request
packet is sent and then dequeued with ohci_cancel_packet.  The latter
may happen frequently if the AR resp tasklet is executed before the AT
req tasklet for the same transaction.

Add the missing dma_unmap_single.  This fixes
https://bugzilla.redhat.com/show_bug.cgi?id=475156

Reported-by: Emmanuel Kowalski
Tested-by: Emmanuel Kowalski
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2008-12-10 12:45:34 +01:00
Roland McGrath 85f334666a tracehook: exec double-reporting fix
The patch 6341c39 "tracehook: exec" introduced a small regression in
2.6.27 regarding binfmt_misc exec event reporting.  Since the reporting
is now done in the common search_binary_handler() function, an exec
of a misc binary will result in two (or possibly multiple) exec events
being reported, instead of just a single one, because the misc handler
contains a recursive call to search_binary_handler.

To add to the confusion, if PTRACE_O_TRACEEXEC is not active, the multiple
SIGTRAP signals will in fact cause only a single ptrace intercept, as the
signals are not queued.  However, if PTRACE_O_TRACEEXEC is on, the debugger
will actually see multiple ptrace intercepts (PTRACE_EVENT_EXEC).

The test program included below demonstrates the problem.

This change fixes the bug by calling tracehook_report_exec() only in the
outermost search_binary_handler() call (bprm->recursion_depth == 0).

The additional change to restore bprm->recursion_depth after each binfmt
load_binary call is actually superfluous for this bug, since we test the
value saved on entry to search_binary_handler().  But it keeps the use of
of the depth count to its most obvious expected meaning.  Depending on what
binfmt handlers do in certain cases, there could have been false-positive
tests for recursion limits before this change.

    /* Test program using PTRACE_O_TRACEEXEC.
       This forks and exec's the first argument with the rest of the arguments,
       while ptrace'ing.  It expects to see one PTRACE_EVENT_EXEC stop and
       then a successful exit, with no other signals or events in between.

       Test for kernel doing two PTRACE_EVENT_EXEC stops for a binfmt_misc exec:

       $ gcc -g traceexec.c -o traceexec
       $ sudo sh -c 'echo :test:M::foobar::/bin/cat: > /proc/sys/fs/binfmt_misc/register'
       $ echo 'foobar test' > ./foobar
       $ chmod +x ./foobar
       $ ./traceexec ./foobar; echo $?
       ==> good <==
       foobar test
       0
       $
       ==> bad <==
       foobar test
       unexpected status 0x4057f != 0
       3
       $

    */

    #include <stdio.h>
    #include <sys/types.h>
    #include <sys/wait.h>
    #include <sys/ptrace.h>
    #include <unistd.h>
    #include <signal.h>
    #include <stdlib.h>

    static void
    wait_for (pid_t child, int expect)
    {
      int status;
      pid_t p = wait (&status);
      if (p != child)
	{
	  perror ("wait");
	  exit (2);
	}
      if (status != expect)
	{
	  fprintf (stderr, "unexpected status %#x != %#x\n", status, expect);
	  exit (3);
	}
    }

    int
    main (int argc, char **argv)
    {
      pid_t child = fork ();

      if (child < 0)
	{
	  perror ("fork");
	  return 127;
	}
      else if (child == 0)
	{
	  ptrace (PTRACE_TRACEME);
	  raise (SIGUSR1);
	  execv (argv[1], &argv[1]);
	  perror ("execve");
	  _exit (127);
	}

      wait_for (child, W_STOPCODE (SIGUSR1));

      if (ptrace (PTRACE_SETOPTIONS, child,
		  0L, (void *) (long) PTRACE_O_TRACEEXEC) != 0)
	{
	  perror ("PTRACE_SETOPTIONS");
	  return 4;
	}

      if (ptrace (PTRACE_CONT, child, 0L, 0L) != 0)
	{
	  perror ("PTRACE_CONT");
	  return 5;
	}

      wait_for (child, W_STOPCODE (SIGTRAP | (PTRACE_EVENT_EXEC << 8)));

      if (ptrace (PTRACE_CONT, child, 0L, 0L) != 0)
	{
	  perror ("PTRACE_CONT");
	  return 6;
	}

      wait_for (child, W_EXITCODE (0, 0));

      return 0;
    }

Reported-by: Arnd Bergmann <arnd@arndb.de>
CC: Ulrich Weigand <ulrich.weigand@de.ibm.com>
Signed-off-by: Roland McGrath <roland@redhat.com>
2008-12-09 19:36:38 -08:00
Thomas Renninger 2a42d9dba7 PCIe: ASPM: Break out of endless loop waiting for PCI config bits to switch
Makes a Compaq 6735s boot reliably again.  It used to hang in the loop
on some boots.  Give the link one second to train, otherwise break out
of the loop and reset the previously set clock bits.

Cc: stable@vger.kernel.org
Signed-off-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Matthew Garrett <mjg59@srcf.ucam.org>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-12-09 14:59:24 -08:00
Alex Chiang 3b5dd45e94 PCI: stop leaking 'slot_name' in pci_create_slot
In pci_create_slot(), the local variable 'slot_name' is allocated by
make_slot_name(), but never freed. We never use it after passing it to
the kobject core, so we should free it upon function exit.

Cc: stable@kernel.org
Signed-off-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-12-09 14:36:03 -08:00
Ralf Baechle 98873f53be MIPS: Better than nothing implementation of PCI mmap to fix X.
Certain X11 servers such as the SIS server will only work if PCI mmap is
implemented.  This patch implements PCI mmap but to be on the same side
so close to a release it only supports uncached mappings so performance
will not be optimal for some uses such as framebuffers.

Thanks to Zhang Le <r0bertz@gentoo.org> for the original report and
testing.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-12-09 21:55:43 +00:00
John Keller ff740fb021 [IA64] SN: prevent IRQ retargetting in request_irq()
With the introduction of the generic affinity autoselector,
irq_select_affinity(), IRQs are now being retargetted,
using a default mask, via the request_irq() path.
This results in all IRQs targetted at CPU 0.

SN Altix assigns affinity in the SN PROM, and does not
expect that to be changed as part of request_irq().

Set the IRQ_AFFINITY_SET flag to prevent
request_irq() from resetting affinity.

Signed-off-by: John Keller <jpk@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2008-12-09 10:57:18 -08:00
Nigel Cunningham ec9a13cdbf ieee1394: node manager causes up to ~3.25s delay in freezing tasks
The firewire nodemanager function "nodemgr_host_thread" contains a loop
that calls try_to_freeze near the top of the loop, but then delays for
up to 3.25 seconds (plus time to do work) before getting back to the top
of the loop. When starting a cycle post-boot, this doesn't seem to bite,
but it is causing a noticeable delay at boot time, when freezing
processes prior to starting to read the image.

The following patch adds invocation of try_to_freeze to the subloops
that are used in the body of this function. With these additions, the
time to freeze when starting to resume at boot time is virtually zero.
I'm no expert on firewire, and so don't know that we shouldn't check
the return value and jump back to the top of the loop or such like after
being frozen, but I submit it for your consideration.

Signed-off-by: Nigel Cunningham <nigel@tuxonice.net>

The delay until nodemgr freezes was up to 0.25s (plus time for node
probes) in Linux 2.6.27 and older and up to 3.25s (plus ~) since Linux
2.6.28-rc1, hence much more noticeable.

try_to_freeze() without any jump is correct.  The surrounding code in
the respective loops will catch whether another bus reset happens during
the freeze and handle it.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2008-12-09 19:34:33 +01:00
Brian King 9a2bd244e1 sched: CPU remove deadlock fix
Impact: fix possible deadlock in CPU hot-remove path

This patch fixes a possible deadlock scenario in the CPU remove path.
migration_call grabs rq->lock, then wakes up everything on rq->migration_queue
with the lock held. Then one of the tasks on the migration queue ends up
calling tg_shares_up which then also tries to acquire the same rq->lock.

[c000000058eab2e0] c000000000502078 ._spin_lock_irqsave+0x98/0xf0
[c000000058eab370] c00000000008011c .tg_shares_up+0x10c/0x20c
[c000000058eab430] c00000000007867c .walk_tg_tree+0xc4/0xfc
[c000000058eab4d0] c0000000000840c8 .try_to_wake_up+0xb0/0x3c4
[c000000058eab590] c0000000000799a0 .__wake_up_common+0x6c/0xe0
[c000000058eab640] c00000000007ada4 .complete+0x54/0x80
[c000000058eab6e0] c000000000509fa8 .migration_call+0x5fc/0x6f8
[c000000058eab7c0] c000000000504074 .notifier_call_chain+0x68/0xe0
[c000000058eab860] c000000000506568 ._cpu_down+0x2b0/0x3f4
[c000000058eaba60] c000000000506750 .cpu_down+0xa4/0x108
[c000000058eabb10] c000000000507e54 .store_online+0x44/0xa8
[c000000058eabba0] c000000000396260 .sysdev_store+0x3c/0x50
[c000000058eabc10] c0000000001a39b8 .sysfs_write_file+0x124/0x18c
[c000000058eabcd0] c00000000013061c .vfs_write+0xd0/0x1bc
[c000000058eabd70] c0000000001308a4 .sys_write+0x68/0x114
[c000000058eabe30] c0000000000086b4 syscall_exit+0x0/0x40

Signed-off-by: Brian King <brking@linux.vnet.ibm.com>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-09 19:27:03 +01:00
Tony Luck 3c0db899bf [IA64] Fix section mismatch ioc3uart_init()/ioc3uart_submodule
s/ioc3uart_submodule/ioc3uart_ops/ makes the section mismatch
check happy.

Signed-off-by: Tony Luck <tony.luck@intel.com>
2008-12-09 10:08:51 -08:00
Robin Holt ecdbc6906e [IA64] Clear up section mismatch for ioc4_ide_attach_one.
The generic_defconfig has three section mismatches.  This clears up
ioc4_ide_attach_one().

Signed-off-by: Robin Holt <holt@sgi.com>
Signed-off-by: Mike Reid <mdr@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2008-12-09 10:08:48 -08:00
Robin Holt 8704ad8552 [IA64] Clear up section mismatch with arch_unregister_cpu()
The generic_defconfig has three section mismatches.  This clears
arch_unregister_cpu()

Signed-off-by: Robin Holt <holt@sgi.com>
Signed-off-by: Jack Steiner <steiner@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2008-12-09 10:08:44 -08:00
Robin Holt 6882edc04f [IA64] Clear up section mismatch for sn_check_wars.
The generic_defconfig has three section mismatches.  This clears up
sn_check_wars().

Signed-off-by: Robin Holt <holt@sgi.com>
Signed-off-by: Jack Steiner <steiner@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2008-12-09 10:08:39 -08:00
Robin Holt 9877e7b855 [IA64] Updated the generic_defconfig to work with the 2.6.28-rc7 kernel.
The AUTOFS=y and AUTOFS4=y causes problems with some distros versions of
automount.  I turned both of those to =m and then followed the default
prompts for everything else.  I did notice that CONFIG_PNP_DEBUG got
changed to CONFIG_PNP_DEBUG_MESSAGES and the default was a =y so I turned
that back to a =n.

Signed-off-by: Robin Holt <holt@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2008-12-09 10:07:48 -08:00
Jack Steiner 023a407f1c [IA64] Fix GRU compile error w/o CONFIG_HUGETLB_PAGE
Eliminate compile error when compiling without CONFIG_HUGETLB_PAGE.

Signed-off-by: Jack Steiner <steiner@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2008-12-09 10:06:43 -08:00
Julia Lawall 6afc9be1de [IA64] eliminate NULL test and memset after alloc_bootmem
As noted by Akinobu Mita in patch b1fceac2b9,
alloc_bootmem and related functions never return NULL and always return a
zeroed region of memory.  Thus a NULL test or memset after calls to these
functions is unnecessary.

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2008-12-09 10:05:13 -08:00
Alexey Dobriyan fc10212583 [IA64] remove BUILD_BUG_ON from paravirt_getreg()
CC      arch/ia64/kernel/asm-offsets.s
In file included from include/linux/bitops.h:17,
                 from include/linux/kernel.h:15,
                 from include/linux/sched.h:52,
                 from arch/ia64/kernel/asm-offsets.c:9:
arch/ia64/include/asm/bitops.h: In function 'set_bit':
arch/ia64/include/asm/bitops.h:47: error: implicit declaration of function 'BUILD_BUG_ON'

Obvious inclusion of kernel.h doesn't fix it, because of circular dependencies
involving fls.h and log2(). Fixing the latter requires some serious header surgery,
it seems, so just remove BUILD_BUG_ON for now.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2008-12-09 10:01:26 -08:00
Linus Torvalds 437f2f91d6 Merge master.kernel.org:/home/rmk/linux-2.6-arm
* master.kernel.org:/home/rmk/linux-2.6-arm:
  [ARM] Fix alignment fault handling for ARMv6 and later CPUs
  [ARM] 5340/1: fix stack placement after noexecstack changes
  [ARM] 5339/1: fix __fls() on ARM
  [ARM] Orion: fix bug in pcie configuration cycle function field mask
  [ARM] omap: fix a pile of issues
2008-12-09 08:29:31 -08:00
Linus Torvalds 4d9c6a21be Merge git://git.infradead.org/mtd-2.6
* git://git.infradead.org/mtd-2.6:
  [MTD] [NAND] fix OOPS accessing flash operations over STM flash on PXA
  [MTD] [NAND] drivers/mtd/nand/pasemi_nand.c: Add missing pci_dev_put
  [MTD] [NAND] fsl_upm: fix build problem with 2.6.28-rc2
  [MTD] physmap: fix memory leak on physmap_flash_remove by using devres
  [MTD] m25p80: chip erase != block erase != sector erase
  [MTD] m25p80: fix detection of m25p16 flashes
  [MTD] m25p80: fix detection of SPI parts
  [MTD] [NAND] OMAP: OneNAND: header file relocation (part 2)
  [MTD] [NAND] OMAP: OneNAND: header file relocation
2008-12-09 08:28:36 -08:00
Linus Torvalds b749e3f8d7 Merge branch 'audit.b59' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit-current
* 'audit.b59' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit-current:
  [PATCH] fix broken timestamps in AVC generated by kernel threads
  [patch 1/1] audit: remove excess kernel-doc
  [PATCH] asm/generic: fix bug - kernel fails to build when enable some common audit code on Blackfin
  [PATCH] return records for fork() both to child and parent
  [PATCH] Audit: make audit=0 actually turn off audit
2008-12-09 08:28:13 -08:00
Linus Torvalds 6f8e5850df Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev
* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev:
  ata: Fix experimental tags
  pata_ninja32: update ID table
  pata_sis: Remove bogus cable match
  ATA: piix, fix pointer deref on suspend
  pata_hpt366: fix clock detection
2008-12-09 08:27:57 -08:00
Linus Torvalds 21283f056f Merge branch 'drm-fixes' of 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/i915: Disable the GM965 MSI errata workaround.
  drm/i915: Don't return error in evict_everything when we get to the end.
  drm/radeon: don't actually enable the IRQ regs until irq is enabled
2008-12-09 08:27:39 -08:00
Linus Torvalds cdf0c7de29 Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc:
  powerpc/virtex5: Fix Virtex5 machine check handling
2008-12-09 08:26:43 -08:00
Benjamin Herrenschmidt f3179748a1 radeonfb: Disable new color expand acceleration unless explicitely enabled
This new color expansion acceleration for radeonfb appears to trigger
problems with X on VT switch and suspend/resume on some machines. It
might be a problem in the VT layer or in X, but I haven't quite found
it yet, so in the meantime, this disables the acceleration by default,
reverting to 2.6.27 state. It can be enabled using the "accel_cexp"
module parameter or fbdev argument.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-12-09 08:24:38 -08:00
Al Viro 48887e63d6 [PATCH] fix broken timestamps in AVC generated by kernel threads
Timestamp in audit_context is valid only if ->in_syscall is set.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2008-12-09 02:27:41 -05:00
Randy Dunlap 7f0ed77d24 [patch 1/1] audit: remove excess kernel-doc
Delete excess kernel-doc notation in kernel/auditsc.c:

Warning(linux-2.6.27-git10//kernel/auditsc.c:1481): Excess function parameter or struct member 'tsk' description in 'audit_syscall_entry'
Warning(linux-2.6.27-git10//kernel/auditsc.c:1564): Excess function parameter or struct member 'tsk' description in 'audit_syscall_exit'

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Eric Paris <eparis@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2008-12-09 02:27:40 -05:00
Mike Frysinger 0b0c940a91 [PATCH] asm/generic: fix bug - kernel fails to build when enable some common audit code on Blackfin
If you enable some common audit code, the kernel fails to build.

In file included from lib/audit.c:17:
include/asm-generic/audit_write.h:3: error: '__NR_swapon' undeclared here (not in a function)
make[1]: *** [lib/audit.o] Error 1
make: *** [lib] Error 2

So do not use __NR_swapon if it isnt defined for a port.

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2008-12-09 02:27:39 -05:00
Al Viro a64e64944f [PATCH] return records for fork() both to child and parent
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2008-12-09 02:27:38 -05:00
Eric Paris a3f07114e3 [PATCH] Audit: make audit=0 actually turn off audit
Currently audit=0 on the kernel command line does absolutely nothing.
Audit always loads and always uses its resources such as creating the
kernel netlink socket.  This patch causes audit=0 to actually disable
audit.  Audit will use no resources and starting the userspace auditd
daemon will not cause the kernel audit system to activate.

Signed-off-by: Eric Paris <eparis@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2008-12-09 02:27:37 -05:00
Alan Cox e3389cbc65 ata: Fix experimental tags
Various tags are now way out of date

Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-12-09 00:44:29 -05:00
Alan Cox b604958a98 pata_ninja32: update ID table
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-12-09 00:44:19 -05:00
Alan Cox e33ba2c6c6 pata_sis: Remove bogus cable match
Some systems report SIS 5513 as both vendor/id and subvendor/id
string. In that case we can't distinguish the system by the id
svid/sdid and in fact the entry here breaks some boxes. At some
point we need to find another way to detect the Targa Visionary 1000,
until then this trades a hang for some users with lower performance
for others.

Closes: #12092

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-12-09 00:44:11 -05:00
Jiri Slaby 9ac6212660 ATA: piix, fix pointer deref on suspend
Hi,

I've found this issue in the mmotm 2008-12-02-17-08.

--

Commit
ata_piix: add borked Tecra M4 to broken suspend list
introduced DMI variables checking, but they can be null, so that
we possibly dereference null.

Check if they are null and avoid checks in that case.

Solves:
BUG: unable to handle kernel NULL pointer dereference at 0000000000000000
IP: [<ffffffff8043da97>] piix_pci_device_suspend+0x117/0x230

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Cc: Jeff Garzik <jgarzik@redhat.com>
Cc: Alexandru Romanescu <a_romanescu@yahoo.co.uk>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-12-09 00:43:54 -05:00
Tejun Heo 2456eb819b pata_hpt366: fix clock detection
pata_hpt366 had its clock detection wrong and detected 25Mhz as 40Mhz
and vice-versa.  Fix it.

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-12-09 00:43:40 -05:00
Keith Packard b60678a75d drm/i915: Disable the GM965 MSI errata workaround.
Since applying the fix suggested by the errata (disabling MSI), we've had
issues with interrupts being stuck on despite IIR being 0 on GM965 hardware.
Most reporters of the issue have confirmed that turning MSI back on fixes
things, and given the difficulties experienced in getting reliable MSI working
on Linux, it's believable that the errata was about software issues and not
actual hardware issues.

Signed-off-by: Dave Airlie <airlied@redhat.com>
2008-12-09 15:37:24 +10:00
Owain Ainsworth 15c35334c9 drm/i915: Don't return error in evict_everything when we get to the end.
Returning -ENOMEM errored all the way out of execbuf, so the rendering never
occurred.

Signed-off-by: Dave Airlie <airlied@redhat.com>
2008-12-09 15:37:17 +10:00
Dave Airlie fae7043c65 drm/radeon: don't actually enable the IRQ regs until irq is enabled
vblank can try and enable the IRQ registers before we've set the interrupt
handler up.

Signed-off-by: Dave Airlie <airlied@redhat.com>
2008-12-09 15:30:50 +10:00
Paul Mackerras ab44f4627e Merge branch 'merge' of master.kernel.org:/pub/scm/linux/kernel/git/galak/powerpc into merge 2008-12-09 14:58:37 +11:00
Linus Torvalds f7a8db89c1 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6:
  tproxy: fixe a possible read from an invalid location in the socket match
  zd1211rw: use unaligned safe memcmp() in-place of compare_ether_addr()
  mac80211: use unaligned safe memcmp() in-place of compare_ether_addr()
  ipw2200: fix netif_*_queue() removal regression
  iwlwifi: clean key table in iwl_clear_stations_table function
  tcp: tcp_vegas ssthresh bug fix
  can: omit received RTR frames for single ID filter lists
  ATM: CVE-2008-5079: duplicate listen() on socket corrupts the vcc table
  netx-eth: initialize per device spinlock
  tcp: make urg+gso work for real this time
  enc28j60: Fix sporadic packet loss (corrected again)
  hysdn: fix writing outside the field on 64 bits
  b1isa: fix b1isa_exit() to really remove registered capi controllers
  can: Fix CAN_(EFF|RTR)_FLAG handling in can_filter
  Phonet: do not dump addresses from other namespaces
  netlabel: Fix a potential NULL pointer dereference
  bnx2: Add workaround to handle missed MSI.
  xfrm: Fix kernel panic when flush and dump SPD entries
2008-12-08 19:52:43 -08:00
Linus Torvalds 6f84b4dbe9 Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86: fix default_spin_lock_flags() prototype
  AMD IOMMU: __unmap_single: check for bad_dma_address instead of 0
  AMD IOMMU: fix WARN_ON in dma_ops unmap path
  AMD IOMMU: fix typo in comment
  AMD IOMMU: fix loop counter in free_pagetable function
  AMD IOMMU: fix iommu_map_page function
2008-12-08 19:50:26 -08:00
Linus Torvalds 7f336bf1e5 Merge git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6:
  ide: build-fix for CONFIG_BLK_DEV_IDEDMA_PMAC=n
  Revert "ide: respect current DMA setting during resume"
2008-12-08 19:50:09 -08:00
J. Bruce Fields a4f4d6df53 EXPORTFS: handle NULL returns from fh_to_dentry()/fh_to_parent()
While 440037287c "[PATCH] switch all filesystems over to
d_obtain_alias" removed some cases where fh_to_dentry() and
fh_to_parent() could return NULL, there are still a few NULL returns
left in individual filesystems.  Thus it was a mistake for that commit
to remove the handling of NULL returns in the callers.

Revert those parts of 440037287c which removed the NULL handling.

(We could, alternatively, modify all implementations to return -ESTALE
instead of NULL, but that proves to require fixing a number of
filesystems, and in some cases it's arguably more natural to return
NULL.)

Thanks to David for original patch and Linus, Christoph, and Hugh for
review.

Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Cc: David Howells <dhowells@redhat.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-12-08 19:49:32 -08:00
Bartlomiej Zolnierkiewicz 5384657479 ide: build-fix for CONFIG_BLK_DEV_IDEDMA_PMAC=n
IDE pmac host driver build fails with CONFIG_BLK_DEV_IDEDMA_PMAC=n
as reported by Kamalesh:

> drivers/ide/pmac.c: In function 'pmac_ide_set_pio_mode':
> drivers/ide/pmac.c:527: error: implicit declaration of function 'kauai_lookup_timing'
> drivers/ide/pmac.c:527: error: 'shasta_pio_timings' undeclared (first use in this function)
> drivers/ide/pmac.c:527: error: (Each undeclared identifier is reported only once
> drivers/ide/pmac.c:527: error: for each function it appears in.)
> drivers/ide/pmac.c:534: error: 'kauai_pio_timings' undeclared (first use in this function)
> drivers/ide/pmac.c: In function 'pmac_ide_do_resume':
> drivers/ide/pmac.c:914: error: 'IDE_WAKEUP_DELAY' undeclared (first use in this function)
> drivers/ide/pmac.c: At top level:
> drivers/ide/pmac.c:1007: error: 'pmac_ide_init_dma' undeclared here (not in a function)
> drivers/ide/pmac.c: In function 'pmac_ide_setup_device':
> drivers/ide/pmac.c:1107: error: 'IDE_WAKEUP_DELAY' undeclared (first use in this function)
> drivers/ide/pmac.c: In function 'pmac_ide_macio_attach':
> drivers/ide/pmac.c:1209: error: 'pmac_ide_hwif_t' has no member named 'dma_regs'
> drivers/ide/pmac.c:1210: error: 'pmac_ide_hwif_t' has no member named 'dma_regs'
> make[2]: *** [drivers/ide/pmac.o] Error 1

Fix it by removing the superfluous config option.

Reported-and-tested-by: Kamalesh Babulal <kamalesh@linux.vnet.ibm.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-12-08 17:52:05 +01:00
Bartlomiej Zolnierkiewicz 1a659880ee Revert "ide: respect current DMA setting during resume"
This reverts commit e9eb838830 since
it could break resume (thanks to Paul Collins for the report).

I'll look into sorting this out properly for 2.6.29
but for 2.6.28 it is the best to just revert my patch.

Reported-by: Paul Collins <paul@burly.ondioline.org>
Cc: rjw@sisk.pl
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-12-08 17:42:35 +01:00