Commit Graph

119313 Commits

Author SHA1 Message Date
Trent Piepho
de339c2aa7 phylib: Fix auto-negotiation restart avoidance
A previous patch, 51e2a3846e, made
genphy_config_aneg() not restart aneg by calling genphy_restart_aneg() if
the advertisement hadn't changed.

But, genphy_restart_aneg() doesn't just restart aneg, it may also *enable*
aneg or un-isolate the PHY from the MII (those functions are controlled by
the same register).  The code to avoid calling genphy_restart_aneg() didn't
consider this.

So, modify genphy_config_aneg() to also check if the PHY needs to have aneg
enabled or be un-isolated before deciding not to restart aneg.

This caused a problem with certain Davicom PHYs, as that driver isolates
the PHY (why?) before calling genphy_config_aneg() and expects the PHY to
be un-isolated by that function.

Signed-off-by: Trent Piepho <tpiepho@freescale.com>
Reported-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-19 15:52:41 -08:00
Harvey Harrison
31c221c49f net: jme.c rxdesc.flags is __le16, other missing endian swaps
This is the minimal patch to fix endian mismatches.  These are
probably bugs on big-endian arches, noops on little endian.

jme_rxsum_ok could be improved to directly take a __le16 and
change all of the masks/sets to be in little-endian, but
has not been done here to keep the patch small.

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-19 15:50:59 -08:00
Paulius Zaleckas
9d6ada9f41 phylib: fix phy name example in documentation
All MDIO bus drivers currently name bus with "%x" format.
There is one exception where mv643xx_eth driver is using "%d".
Phy address on the bus uses format "%02x".

Fixing phy name example to match all real life MDIO drivers.

Signed-off-by: Paulius Zaleckas <paulius.zaleckas@teltonika.lt>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-19 15:38:24 -08:00
David S. Miller
b47300168e net: Do not fire linkwatch events until the device is registered.
Several device drivers try to do things like netif_carrier_off()
before register_netdev() is invoked.  This is bogus, but too many
drivers do this to fix them all up in one go.

Reported-by: Folkert van Heusden <folkert@vanheusden.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-19 15:33:54 -08:00
Alexey Dobriyan
566521d637 phonet: fix compilation with gcc-3.4
CC [M]  net/phonet/af_phonet.o
net/phonet/af_phonet.c: In function `pn_socket_create':
net/phonet/af_phonet.c:38: sorry, unimplemented: inlining failed in call to 'phonet_proto_put': function body not available
net/phonet/af_phonet.c:99: sorry, unimplemented: called from here
make[3]: *** [net/phonet/af_phonet.o] Error 1

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-19 14:17:41 -08:00
Alexey Dobriyan
79aefa45b2 ixgbe: fix compilation with gcc-3.4
CC [M]  drivers/net/ixgbe/ixgbe_main.o
drivers/net/ixgbe/ixgbe_main.c: In function `ixgbe_intr':
drivers/net/ixgbe/ixgbe_main.c:1290: sorry, unimplemented: inlining failed in call to 'ixgbe_irq_enable': function body not available
drivers/net/ixgbe/ixgbe_main.c:1312: sorry, unimplemented: called from here
make[4]: *** [drivers/net/ixgbe/ixgbe_main.o] Error 1

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Acked-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-19 14:17:02 -08:00
Sheng Yang
1df8fb3d5f PCI: Fix disable IRQ 0 in pci_reset_function()
Before initialization, dev->irq may be zero. Make sure we don't disable
it at reset time in that case.

Reviewed-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Sheng Yang <sheng@linux.intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-11-19 14:12:29 -08:00
Robert Olsson
bfdbc0acad pktgen: fix multiple queue warning
As number of TX queues in unrelated to number of CPU's we remove this test
and just make sure nxtq never gets exceeded.

Signed-off-by: Robert Olsson <robert.olsson@its.uu.se>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-19 14:09:47 -08:00
Benjamin Thery
c3e388964b net: fix ip_mr_init() error path
Similarly to IPv6 ip6_mr_init() (fixed last week), the order of cleanup
operations in the error/exit section of ip_mr_init() is completely 
inversed. It should be the other way around.
Also a del_timer() is missing in the error path.

I should have guessed last week that this same error existed in ipmr.c
too, as ip6mr.c is largely inspired by ipmr.c.

Signed-off-by: Benjamin Thery <benjamin.thery@bull.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-19 14:07:41 -08:00
FUJITA Tomonori
b4e0f9eb8a intel-iommu: fix compile warnings
Impact: cleanup

I got the following warnings on IA64:

  linux-2.6/drivers/pci/intel-iommu.c: In function 'init_dmars':
  linux-2.6/drivers/pci/intel-iommu.c:1658: warning: format '%Lx' expects type 'long long unsigned int', but argument 2 has type 'u64'
  linux-2.6/drivers/pci/intel-iommu.c:1663: warning: format '%Lx' expects type 'long long unsigned int', but argument 2 has type 'u64'

Another victim of int-ll64.h versus int-l64.h confusion between platforms.

->reg_base_addr has a type of u64 - which can only be printed out
consistently if we cast its type up to LL.

[ Eventually reg_base_addr should be converted to phys_addr_t, for which
  we have the %pR printk helper - but that is out of the scope of late
  -rc's. ]

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-11-19 09:11:13 +01:00
Ingo Molnar
6d5b43a67a Merge branch 'tip/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-trace into tracing/urgent 2008-11-19 09:00:50 +01:00
Steven Rostedt
32464779a1 ftrace: fix dyn ftrace filter selection
Impact: clean up and fix for dyn ftrace filter selection

The previous logic of the dynamic ftrace selection of enabling
or disabling functions was complex and incorrect. This patch simplifies
the code and corrects the usage. This simplification also makes the
code more robust.

Here is the correct logic:

  Given a function that can be traced by dynamic ftrace:

  If the function is not to be traced, disable it if it was enabled.
  (this is if the function is in the set_ftrace_notrace file)

  (filter is on if there exists any functions in set_ftrace_filter file)

  If the filter is on, and we are enabling functions:
    If the function is in set_ftrace_filter, enable it if it is not
      already enabled.
    If the function is not in set_ftrace_filter, disable it if it is not
      already disabled.

  Otherwise, if the filter is off and we are enabling function tracing:
    Enable the function if it is not already enabled.

  Otherwise, if we are disabling function tracing:
    Disable the function if it is not already disabled.

This code now sets or clears the ENABLED flag in the record, and at the
end it will enable the function if the flag is set, or disable the function
if the flag is cleared.

The parameters for the function that does the above logic is also
simplified. Instead of passing in confusing "new" and "old" where
they might be swapped if the "enabled" flag is not set. The old logic
even had one of the above always NULL and had to be filled in. The new
logic simply passes in one parameter called "nop". A "call" is calculated
in the code, and at the end of the logic, when we know we need to either
disable or enable the function, we can then use the "nop" and "call"
properly.

This code is more robust than the previous version.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-11-19 00:19:47 -05:00
Steven Rostedt
8204327831 ftrace: make filtered functions effective on setting
Impact: fix filter selection to apply when set

It can be confusing when the set_filter_functions is set (or cleared)
and the functions being recorded by the dynamic tracer does not
match.

This patch causes the code to be updated if the function tracer is
enabled and the filter is changed.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-11-19 00:18:54 -05:00
Steven Rostedt
f10ed36ec1 ftrace: fix set_ftrace_filter
Impact: fix of output of set_ftrace_filter

The commit "ftrace: do not show freed records in
             available_filter_functions"

Removed a bit too much from the set_ftrace_filter code, where we now see
all functions in the set_ftrace_filter file even when we set a filter.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-11-19 00:17:45 -05:00
Johannes Berg
4018517a1a iwlagn: fix RX skb alignment
So I dug deeper into the DMA problems I had with iwlagn and a kind soul
helped me in that he said something about pci-e alignment and mentioned
the iwl_rx_allocate function to check for crossing 4KB boundaries. Since
there's 8KB A-MPDU support, crossing 4k boundaries didn't seem like
something the device would fail with, but when I looked into the
function for a minute anyway I stumbled over this little gem:

	BUG_ON(rxb->dma_addr & (~DMA_BIT_MASK(36) & 0xff));

Clearly, that is a totally bogus check, one would hope the compiler
removes it entirely. (Think about it)

After fixing it, I obviously ran into it, nothing guarantees the
alignment the way you want it,  because of the way skbs and their
headroom are allocated. I won't explain that here nor double-check that
I'm right, that goes beyond what most of the CC'ed people care about.

So then I came up with the patch below, and so far my system has
survived minutes with 64K pages, when it would previously fail in
seconds. And I haven't seen a single instance of the TX bug either. But
when you see the patch it'll be pretty obvious to you why.

This should fix the following reported kernel bugs:

http://bugzilla.kernel.org/show_bug.cgi?id=11596
http://bugzilla.kernel.org/show_bug.cgi?id=11393
http://bugzilla.kernel.org/show_bug.cgi?id=11983

I haven't checked if there are any elsewhere, but I suppose RHBZ will
have a few instances too...

I'd like to ask anyone who is CC'ed (those are people I know ran into
the bug) to try this patch.

I am convinced that this patch is correct in spirit, but I haven't
understood why, for example, there are so many unmap calls. I'm not
entirely convinced that this is the only bug leading to the TX reply
errors.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-11-18 17:26:26 -05:00
Johannes Berg
8e3bad65a5 mac80211: remove ieee80211_notify_mac
Before ieee80211_notify_mac() was added, it was presented with the
use case of using it to tell mac80211 that the association may
have been lost because the firmware crashed/reset.

Since then, it has also been used by iwlwifi to (slightly) speed
up re-association after resume, a workaround around the fact that
mac80211 has no suspend/resume handling yet. It is also not used
by any other drivers, so clearly it cannot be necessary for "good
enough" suspend/resume.

Unfortunately, the callback suffers from a severe problem: It only
works for station mode. If suspend/resume happens while in IBSS or
any other mode (but station), then the callback is pointless.

Recently, it has created a number of locking issues, first because
it required rtnl locking rather than RCU due to calling sleeping
functions within the critical section, and now because it's called
by iwlwifi from the mac80211 workqueue that may not use the rtnl
because it is flushed under rtnl.
(cf. http://bugzilla.kernel.org/show_bug.cgi?id=12046)

I think, therefore, that we should take a step back, remove it
entirely for now and add the small feature it provided properly.
For suspend and resume we will need to introduce new hooks, and for
the case where the firmware was reset the driver will probably
simply just pretend it has done a suspend/resume cycle to get
mac80211 to reprogram the hardware completely, not just try to
connect to the current AP again in station mode. When doing so, we
will need to take into account locking issues and possibly defer
to schedule_work from within mac80211 for the resume operation,
while the suspend operation must be done directly.

Proper suspend/resume should also not necessarily try to reconnect
to the current AP, the time spent in suspend may have been short
enough to not be disconnected from the AP, mac80211 will detect
that the AP went out of range quickly if it did, and if the
association is lost then the AP will disassoc as soon as a data
frame is sent. We might also take into account WWOL then, and
have mac80211 program the hardware into such a mode where it is
available and requested.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-11-18 17:26:26 -05:00
Johannes Berg
9b44fb89ca libertas_tf: fix skb tail pointer
skb->tail can't be meant here because it's not the same across 32/64 bit
compilations. This means there's no way the current driver can work on
64-bit architectures.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Cc: stable@kernel.org [2.6.27]
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-11-18 17:26:26 -05:00
Hiroshi Shimamoto
20a4a236c7 x86: uaccess_64: fix return value in __copy_from_user()
__copy_from_user() will return invalid value 16 when it fails to
access user space and the size is 10.

Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-11-18 22:28:58 +01:00
Steve Conklin
093bac154c x86: quirk for reboot stalls on a Dell Optiplex 330
Dell Optiplex 330 appears to hang on reboot. This is resolved by adding
a quirk to set bios reboot.

Signed-off-by: Leann Ogasawara <leann.ogasawara@canonical.com>
Signed-off-by: Steve Conklin <steve.conklin@canonical.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-11-18 22:22:29 +01:00
Vegard Nossum
641d2f63cf trace: introduce missing mutex_unlock()
Impact: fix tracing buffer mutex leak in case of allocation failure

This error was spotted by this semantic patch:

  http://www.emn.fr/x-info/coccinelle/mut.html

It looks correct as far as I can tell. Please review.

Signed-off-by: Vegard Nossum <vegard.nossum@gmail.com>
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-11-18 21:37:15 +01:00
Ingo Molnar
5177dc3f2b Merge branch 'linus' into tracing/urgent 2008-11-18 21:37:07 +01:00
Steve French
bfb59820ee [CIFS] fix check for dead tcon in smb_init
This was recently changed to check for need_reconnect, but should
actually be a check for a tidStatus of CifsExiting.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
2008-11-18 16:33:48 +00:00
Mike Frysinger
66359f8490 Parport driver: disable pc-style parport on Blackfin systems
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-18 08:10:08 -08:00
Linus Torvalds
7f0f598a00 Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block
* 'for-linus' of git://git.kernel.dk/linux-2.6-block:
  block: hold extra reference to bio in blk_rq_map_user_iov()
  relay: fix cpu offline problem
  Release old elevator on change elevator
  block: fix boot failure with CONFIG_DEBUG_BLOCK_EXT_DEVT=y and nash
  block/md: fix md autodetection
  block: make add_partition() return pointer to hd_struct
  block: fix add_partition() error path
2008-11-18 08:07:51 -08:00
Arjan van de Ven
a6a0c4ca7e suspend: use WARN not WARN_ON to print the message
By using WARN(), kerneloops.org can collect which component is causing
the delay and make statistics about that. suspend_test_finish() is
currently the number 2 item but unless we can collect who's causing
it we're not going to be able to fix the hot topic ones..

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-18 08:07:36 -08:00
Linus Torvalds
72b51a6b4d Merge branch 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  kernel/profile.c: fix section mismatch warning
  function tracing: fix wrong pos computing when read buffer has been fulfilled
  tracing: fix mmiotrace resizing crash
  ring-buffer: no preempt for sched_clock()
  ring-buffer: buffer record on/off switch
2008-11-18 08:06:35 -08:00
Linus Torvalds
8c60bfb066 Merge branch 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  cpuset: fix regression when failed to generate sched domains
  sched, signals: fix the racy usage of ->signal in account_group_xxx/run_posix_cpu_timers
  sched: fix kernel warning on /proc/sched_debug access
  sched: correct sched-rt-group.txt pathname in init/Kconfig
2008-11-18 08:06:21 -08:00
Linus Torvalds
b6584065ee Merge branch 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  swiotlb: use coherent_dma_mask in alloc_coherent
  MAINTAINERS: remove me as RAID maintainer
2008-11-18 08:06:00 -08:00
Linus Torvalds
376fdd2a5d Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/blackfin-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/blackfin-2.6:
  Blackfin arch: fix a broken define in dma-mapping
  Blackfin arch: fix bug - Turn on DEBUG_DOUBLEFAULT, booting SMP kernel crash
  Blackfin arch: fix bug - shared lib function in L2 failed be called
  Blackfin arch: fix incorrect limit check for bf54x check_gpio
  Blackfin arch: fix bug - Cpufreq assumes clocks in kHz and not Hz.
  Blackfin arch: dont warn when running a kernel on the oldest supported silicon
  Blackfin arch: fix bug - kernel build with write back policy fails to be booted up
  Blackfin arch: fix bug - dmacopy test case fail on all platform
  Blackfin arch: Fix typo when adding CONFIG_DEBUG_VERBOSE
  Blackfin arch: don't copy bss when copying L1
  Blackfin arch: fix bug - Fail to boot jffs2 kernel for BF561 with SMP patch
  Blackfin arch: handle case of d_path() returning error in decode_address()
2008-11-18 08:05:43 -08:00
Linus Torvalds
af94ce063c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/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 - Fix resume of GPIO unsol event for STAC/IDT
  ALSA: hda - Add quirks for HP Pavilion DV models
  ALSA: hda - Fix GPIO initialization in patch_stac92hd71bxx()
  ALSA: hda - Check model type instead of SSID in patch_92hd71bxx()
  ALSA: sound/pci/pcxhr/pcxhr.c: introduce missing kfree and pci_disable_device
  ALSA: hda: STAC_VREF_EVENT value change
  ALSA: hda - Missing NULL check in hda_beep.c
  ALSA: hda - Add digital beep playback switch for STAC/IDT codecs
2008-11-18 08:05:05 -08:00
Julia Lawall
0bb943c7a2 tracing: kernel/trace/trace.c: introduce missing kfree()
Impact: fix memory leak

Error handling code following a kzalloc should free the allocated data.

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

// <smpl>
@r exists@
local idexpression x;
statement S;
expression E;
identifier f,l;
position p1,p2;
expression *ptr != NULL;
@@

(
if ((x@p1 = \(kmalloc\|kzalloc\|kcalloc\)(...)) == NULL) S
|
x@p1 = \(kmalloc\|kzalloc\|kcalloc\)(...);
...
if (x == NULL) S
)
<... when != x
     when != if (...) { <+...x...+> }
x->f = E
...>
(
 return \(0\|<+...x...+>\|ptr\);
|
 return@p2 ...;
)

@script:python@
p1 << r.p1;
p2 << r.p2;
@@

print "* file: %s kmalloc %s return %s" % (p1[0].file,p1[0].line,p2[0].line)
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-11-18 16:59:58 +01:00
Ingo Molnar
73f56c0d35 Merge branch 'iommu-fixes-2.6.28' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/linux-2.6-iommu into x86/urgent 2008-11-18 16:48:49 +01:00
Philipp Kohlbecher
0af40a4b10 x86: more general identifier for Phoenix BIOS
Impact: widen the reach of the low-memory-protect DMI quirk

Phoenix BIOSes variously identify their vendor as "Phoenix Technologies,
LTD" or "Phoenix Technologies LTD" (without the comma.)

This patch makes the identification string in the bad_bios_dmi_table
more general (following a suggestion by Ingo Molnar), so that both
versions are handled.

Again, the patched file compiles cleanly and the patch has been tested
successfully on my machine.

Signed-off-by: Philipp Kohlbecher <xt28@gmx.de>
Cc: <stable@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-11-18 16:11:36 +01:00
Joerg Roedel
8501c45cc3 AMD IOMMU: check for next_bit also in unmapped area
Impact: fix possible use of stale IO/TLB entries

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2008-11-18 15:44:43 +01:00
Joerg Roedel
695b5676c7 AMD IOMMU: fix fullflush comparison length
Impact: fix comparison length for 'fullflush'

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2008-11-18 15:44:42 +01:00
Joerg Roedel
3ce1f93c6d AMD IOMMU: enable device isolation per default
Impact: makes device isolation the default for AMD IOMMU

Some device drivers showed double-free bugs of DMA memory while testing
them with AMD IOMMU. If all devices share the same protection domain
this can lead to data corruption and data loss. Prevent this by putting
each device into its own protection domain per default.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2008-11-18 15:44:31 +01:00
Joerg Roedel
e5e1f606ec AMD IOMMU: add parameter to disable device isolation
Impact: add a new AMD IOMMU kernel command line parameter

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2008-11-18 15:43:23 +01:00
Ingo Molnar
10db4ef7b9 x86, PEBS/DS: fix code flow in ds_request()
this compiler warning:

  arch/x86/kernel/ds.c: In function 'ds_request':
  arch/x86/kernel/ds.c:368: warning: 'context' may be used uninitialized in this function

Shows that the code flow in ds_request() is buggy - it goes into
the unlock+release-context path even when the context is not allocated
yet.

First allocate the context, then do the other checks.

Also, take care with GFP allocations under the ds_lock spinlock.

Cc: <stable@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-11-18 15:34:36 +01:00
Jens Axboe
c26156b253 block: hold extra reference to bio in blk_rq_map_user_iov()
If the size passed in is OK but we end up mapping too many segments,
we call the unmap path directly like from IO completion. But from IO
completion we have an extra reference to the bio, so this error case
goes OOPS when it attempts to free and already free bio.

Fix it by getting an extra reference to the bio before calling the
unmap failure case.

Reported-by: Petr Vandrovec <vandrove@vc.cvut.cz>

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-11-18 15:08:56 +01:00
Lai Jiangshan
98ba4031ab relay: fix cpu offline problem
relay_open() will close allocated buffers when failed.
but if cpu offlined, some buffer will not be closed.
this patch fixed it.

and did cleanup for relay_reset() too.

Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-11-18 15:08:56 +01:00
Zhaolei
68aee07f9b Release old elevator on change elevator
We should release old elevator when change to use a new one.

Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-11-18 15:08:56 +01:00
Zhang, Yanmin
561ec68e4d block: fix boot failure with CONFIG_DEBUG_BLOCK_EXT_DEVT=y and nash
We run into system boot failure with kernel 2.6.28-rc. We found it on a
couple of machines, including T61 notebook, nehalem machine, and another
HPC NX6325 notebook.  All the machines use FedoraCore 8 or FedoraCore 9.
With kernel prior to 2.6.28-rc, system boot doesn't fail.

I debug it and locate the root cause. Pls. see
http://bugzilla.kernel.org/show_bug.cgi?id=11899
https://bugzilla.redhat.com/show_bug.cgi?id=471517

As a matter of fact, there are 2 bugs.

1)root=/dev/sda1, system boot randomly fails. Mostly, boot for 5 times
and fails once. nash has a bug. Some of its functions misuse return
value 0.  Sometimes, 0 means timeout and no uevent available. Sometimes,
0 means nash gets an uevent, but the uevent isn't block-related (for
exmaple, usb). If by coincidence, kernel tells nash that uevents are
available, but kernel also set timeout, nash might stops collecting
other uevents in queue if current uevent isn't block-related.  I work
out a patch for nash to fix it.
http://bugzilla.kernel.org/attachment.cgi?id=18858

2) root=LABEL=/, system always can't boot. initrd init reports
switchroot fails. Here is an executation branch of nash when booting:
    (1) nash read /sys/block/sda/dev; Assume major is 8 (on my desktop)
    (2) nash query /proc/devices with the major number; It found line
	"8 sd";
    (3) nash use 'sd' to search its own probe table to find device (DISK)
	type for the device and add it to its own list;
    (4) Later on, it probes all devices in its list to get filesystem
	labels; scsi register "8 sd" always.

When major is 259, nash fails to find the device(DISK) type. I enables
CONFIG_DEBUG_BLOCK_EXT_DEVT=y when compiling kernel, so 259 is picked up
for device /dev/sda1, which causes nash to fail to find device (DISK)
type.

To fixing issue 2), I create a patch for nash and another patch for
kernel.

http://bugzilla.kernel.org/attachment.cgi?id=18859
http://bugzilla.kernel.org/attachment.cgi?id=18837

Below is the patch for kernel 2.6.28-rc4. It registers blkext, a new
block device in proc/devices.

With 2 patches on nash and 1 patch on kernel, I boot my machines for
dozens of times without failure.

Signed-off-by Zhang Yanmin <yanmin.zhang@linux.intel.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-11-18 15:08:56 +01:00
Tejun Heo
55e8e30c38 block/md: fix md autodetection
Block ext devt conversion missed md_autodetect_dev() call in
rescan_partitions() leaving md autodetect unable to see partitions.
Fix it.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Neil Brown <neilb@suse.de>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-11-18 15:08:56 +01:00
Tejun Heo
ba32929a91 block: make add_partition() return pointer to hd_struct
Make add_partition() return pointer to the new hd_struct on success
and ERR_PTR() value on failure.  This change will be used to fix md
autodetection bug.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Neil Brown <neilb@suse.de>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-11-18 15:08:56 +01:00
Tejun Heo
eb60fa1066 block: fix add_partition() error path
Partition stats structure was not freed on devt allocation failure
path.  Fix it.

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-11-18 15:08:55 +01:00
Takashi Iwai
ef71b1b875 Merge branches 'topic/fix/hda' and 'topic/fix/misc' into for-linus 2008-11-18 13:49:39 +01:00
Takashi Iwai
c5d08bb567 ALSA: hda - Fix resume of GPIO unsol event for STAC/IDT
Use cached write for setting the GPIO unsolicited event mask to be
restored properly at resume.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2008-11-18 10:55:36 +01:00
Takashi Iwai
80bf272468 ALSA: hda - Add quirks for HP Pavilion DV models
Added the quirk entries for HP Pavilion DV5 and DV7 with model=hp-m4.

Reference: Novell bnc#445321, bnc#445161
	https://bugzilla.novell.com/show_bug.cgi?id=445321
	https://bugzilla.novell.com/show_bug.cgi?id=445161

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2008-11-18 10:48:41 +01:00
Mike Frysinger
62273eeb6a Blackfin arch: fix a broken define in dma-mapping
dma_mapping_error is an actual function, so fix broken define with a
real inline stub

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-11-18 17:48:22 +08:00
Graf Yang
4213cb6400 Blackfin arch: fix bug - Turn on DEBUG_DOUBLEFAULT, booting SMP kernel crash
Signed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-11-18 17:48:22 +08:00