Граф коммитов

223382 Коммитов

Автор SHA1 Сообщение Дата
Yan, Zheng 24ae63656a Btrfs: Fix page leak in compressed writeback path
"start + num_bytes >= actual_end" can happen when compressed page writeback races
with file truncation. In that case we need unlock and release pages past the end
of file.

Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2010-12-10 16:29:09 -05:00
Josef Bacik 84cd948cb1 Btrfs: do not BUG if we fail to remove the orphan item for dead snapshots
Not being able to delete an orphan item isn't a horrible thing.  The worst that
happens is the next time around we try and do the orphan cleanup and we can't
find the referenced object and just delete the item and move on.

Signed-off-by: Josef Bacik <josef@redhat.com>
2010-12-10 16:29:04 -05:00
David S. Miller e91db5cd6f Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6 2010-12-10 12:51:02 -08:00
Nicolas Dichtel 5f75a1042f ipv6: fix nl group when advertising a new link
New idev are advertised with NL group RTNLGRP_IPV6_IFADDR, but
should use RTNLGRP_IPV6_IFINFO.
Bug was introduced by commit 8d7a76c9.

Signed-off-by: Wang Xuefu <xuefu.wang@6wind.com>
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Acked-by: Thomas Graf <tgraf@infradead.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-12-10 12:49:36 -08:00
Stephen Hemminger 3700c3c293 connector: add module alias
Since connector can be built as a module and uses netlink socket
to communicate. The module should have an alias to autoload when socket
of NETLINK_CONNECTOR type is requested.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Acked-by: Evgeniy Polyakov <zbr@ioremap.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-12-10 12:27:49 -08:00
Martin Lucina c1249c0aae net: Document the kernel_recvmsg() function
Signed-off-by: Martin Lucina <mato@kotelna.sk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-12-10 11:13:18 -08:00
Rafael J. Wysocki e4fbce740f r8169: Fix runtime power management
I noticed that one of the post-2.6.36 patches broke runtime PM of the
r8169 on my MSI Wind test machine in such a way that the link was not
brought up after reconnecting the network cable.

In the process of debugging the issue I realized that we only should
invoke the runtime PM functions in rtl8169_check_link_status() when
link change is reported and if we do so, the problem goes away.
Moreover, this allows rtl8169_runtime_idle() to be simplified quite
a bit.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Francois Romieu <romieu@fr.zoreil.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-12-10 11:09:18 -08:00
Chuck Lever 5b362ac379 NFS: Fix panic after nfs_umount()
After a few unsuccessful NFS mount attempts in which the client and
server cannot agree on an authentication flavor both support, the
client panics.  nfs_umount() is invoked in the kernel in this case.

Turns out nfs_umount()'s UMNT RPC invocation causes the RPC client to
write off the end of the rpc_clnt's iostat array.  This is because the
mount client's nrprocs field is initialized with the count of defined
procedures (two: MNT and UMNT), rather than the size of the client's
proc array (four).

The fix is to use the same initialization technique used by most other
upper layer clients in the kernel.

Introduced by commit 0b524123, which failed to update nrprocs when
support was added for UMNT in the kernel.

BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=24302
BugLink: http://bugs.launchpad.net/bugs/683938

Reported-by: Stefan Bader <stefan.bader@canonical.com>
Tested-by: Stefan Bader <stefan.bader@canonical.com>
Cc: stable@kernel.org # >= 2.6.32
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-12-10 13:01:50 -05:00
Thomas Bogendoerfer 6934d33556 hso: IP checksuming doesn't work on GE0301 option cards
There is definitly a problem, that some option cards send up broken
IP pakets leading to corrupted IP packets. These corruptions aren't
detected, because the driver claims that the packets are already
checksummed. This change removes the CHECKSUM_UNNECESSARY option
and let IP detect broken data.

Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-12-09 20:42:24 -08:00
Thomas Egerer 78347c8c6b xfrm: Fix xfrm_state_migrate leak
xfrm_state_migrate calls kfree instead of xfrm_state_put to free
a failed state. According to git commit 553f9118 this can cause
memory leaks.

Signed-off-by: Thomas Egerer <thomas.egerer@secunet.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-12-09 20:35:27 -08:00
Neil Horman fb4fa76a1f net: Convert netpoll blocking api in bonding driver to be a counter
A while back I made some changes to enable netpoll in the bonding driver.  Among
them was a per-cpu flag that indicated we were in a path that held locks which
could cause the netpoll path to block in during tx, and as such the tx path
should queue the frame for later use.  This appears to have given rise to a
regression.  If one of those paths on which we hold the per-cpu flag yields the
cpu, its possible for us to come back on a different cpu, leading to us clearing
a different flag than we set.  This results in odd netpoll drops, and BUG
backtraces appearing in the log, as we check to make sure that we only clear set
bits, and only set clear bits.  I had though briefly about changing the
offending paths so that they wouldn't sleep, but looking at my origional work
more closely, it doesn't appear that a per-cpu flag is warranted.  We alrady
gate the checking of this flag on IFF_IN_NETPOLL, so we don't hit this in the
normal tx case anyway.  And practically speaking, the normal use case for
netpoll is to only have one client anyway, so we're not going to erroneously
queue netpoll frames when its actually safe to do so.  As such, lets just
convert that per-cpu flag to an atomic counter.  It fixes the rescheduling bugs,
is equivalent from a performance perspective and actually eliminates some code
in the process.

Tested by the reporter and myself, successfully

Reported-by: Liang Zheng <lzheng@redhat.com>
CC: Jay Vosburgh <fubar@us.ibm.com>
CC: Andy Gospodarek <andy@greyhouse.net>
CC: David S. Miller <davem@davemloft.net>
Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-12-09 20:33:46 -08:00
Kevin Hilman e83df17f17 OMAP2+: PM/serial: fix console semaphore acquire during suspend
commit 0d8e2d0dad (OMAP2+: PM/serial:
hold console semaphore while OMAP UARTs are disabled) added use of the
console semaphore to protect UARTs from being accessed after disabled
during idle, but this causes problems in suspend.

During suspend, the console semaphore is acquired by the console
suspend method (console_suspend()) so the try_acquire_console_sem()
will always fail and suspend will be aborted.

To fix, introduce a check so the console semaphore is only attempted
during idle, and not during suspend.  Also use the same check so that
the console semaphore is not prematurely released during resume.

Thanks to Paul Walmsley for suggesting adding the same check during
resume.

Cc: Paul Walmsley <paul@pwsan.com>
Tested-by: Jean Pihet <j-pihet@ti.com>
Tested-by: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2010-12-09 16:41:29 -08:00
Kevin Hilman 28dd31983f OMAP1: SRAM: fix size for OMAP1611 SoCs
Kernel was failing to boot on omap1611 based OSK boards due to
mis-configured SRAM size.  Existing code was using a hard-coded value
for 250k, which was then rounded down by PAGE_SIZE.  Increasing this to
256k allows kernel to boot on omap1611 SoCs.

Problem reported by and initial fix suggested by Tim Bird.

Thanks to Tony Lindgren for helping diagnose the problem to being
specific to OMAP1611 and not affecting OMAP1610/OMAP1623.

Reported-by: Tim Bird <tim.bird@am.sony.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2010-12-09 16:29:21 -08:00
Christoph Hellwig 05340d4ab2 xfs: log timestamp changes to the source inode in rename
Now that we don't mark VFS inodes dirty anymore for internal
timestamp changes, but rely on the transaction subsystem to push
them out, we need to explicitly log the source inode in rename after
updating it's timestamps to make sure the changes actually get
forced out by sync/fsync or an AIL push.

We already account for the fourth inode in the log reservation, as a
rename of directories needs to update the nlink field, so just
adding the xfs_trans_log_inode call is enough.

This fixes the xfsqa 065 regression introduced by:

	"xfs: don't use vfs writeback for pure metadata modifications"

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Alex Elder <aelder@sgi.com>
2010-12-09 17:07:02 -06:00
Alexey Starikovskiy a5dc4f898c ACPI: EC: Add another dmi match entry for MSI hardware
http://bugzilla.kernel.org/show_bug.cgi?id=15418

Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
cc: stable@kernel.org
Signed-off-by: Len Brown <len.brown@intel.com>
2010-12-09 17:08:46 -05:00
Mike Miller 7c03b87048 [SCSI] hpsa: fix redefinition of PCI_DEVICE_ID_CISSF
PCI_DEVICE_ID_CISSF is defined as 323b in pci_ids.h but redefined as 3fff in
hpsa.c. The ID of 3fff will _never_ ship as a standalone controller. It is
intended only as part a complete storage solution. As such, this patch
removes the redefinition and the StorageWorks P1210m from the product table.

It also removes a duplicate line for the "unknown" controller support.

Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-09 15:06:50 -06:00
Zhang Rui 3138b32d5e ACPI battery: update status upon sysfs query
Sometimes the Battery driver doesn't get notifications when it's
plugged/unplugged. And this results in the incorrect Battery
status reported by the power supply sysfs I/F.

Update Battery status first when querying from sysfs.
http://marc.info/?l=linux-acpi&m=128855015826728&w=2

Tested_by: Seblu <seblu@seblu.net>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2010-12-09 15:34:57 -05:00
Zhang Rui 3151dbb04a ACPI ac: update AC status upon sysfs query
http://marc.info/?l=linux-acpi&m=128855015826728&w=2
https://bugzilla.kernel.org/show_bug.cgi?id=21722

Tested_by: Seblu <seblu@seblu.net>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2010-12-09 15:33:08 -05:00
Madhuranath Iyengar 13d38d9df2 [SCSI] qla2xxx: Update version number to 8.03.05-k0.
Signed-off-by: Madhuranath Iyengar <Madhu.Iyengar@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-09 13:25:51 -06:00
Saurav Kashyap 69abf61ea1 [SCSI] qla2xxx: Properly set the return value in qla2xxx_eh_abort function.
A return value is not set for the successful case and it has a garbage value.
This fix will set the default value to SUCCESS and in case of any failures
it is changed.

Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: Madhuranath Iyengar <Madhu.Iyengar@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-09 13:25:47 -06:00
Andrew Vasquez 087c621e22 [SCSI] qla2xxx: Correct issue where NPIV-config data was not being allocated for 82xx parts.
This would cause a panic while reading the NPIV-config data.

Cc: stable@kernel.org
Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: Madhuranath Iyengar <Madhu.Iyengar@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-09 13:25:21 -06:00
Mike Hernandez 7992abfc8b [SCSI] qla2xxx: Change MSI initialization from using incorrect request_irq parameter.
IRQF_SHARED flag should not be set when calling request_irq for MSI
since this interrupt mechanism cannot be shared like standard INTx.

Signed-off-by: Mike Hernandez <michael.hernandez@qlogic.com>
Signed-off-by: Madhuranath Iyengar <Madhu.Iyengar@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-09 13:25:03 -06:00
Mike Hernandez 85727e1f78 [SCSI] qla2xxx: Populate Command Type 6 LUN field properly.
Use the host_to_fcp_swap call to correctly populate the LUN field
in the Command Type 6 path.  This field is used during LUN reset
cleanup and must match the field used in the FCP command.

Cc: stable@kernel.org
Signed-off-by: Mike Hernandez <michael.hernandez@qlogic.com>
Signed-off-by: Madhuranath Iyengar <Madhu.Iyengar@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-09 13:24:11 -06:00
Josef Bacik 7e1fea731d Btrfs: fixup return code for btrfs_del_orphan_item
If the orphan item doesn't exist, we return 1, which doesn't make any sense to
the callers.  Instead return -ENOENT if we didn't find the item.  Thanks,

Signed-off-by: Josef Bacik <josef@redhat.com>
2010-12-09 13:57:15 -05:00
Josef Bacik b8399dee47 Btrfs: do not do fast caching if we are allocating blocks for tree_root
Since the fast caching uses normal tree locking, we can possibly deadlock if we
get to the caching via a btrfs_search_slot() on the tree_root.  So just check to
see if the root we are on is the tree root, and just don't do the fast caching.

Reported-by: Sage Weil <sage@newdream.net>
Signed-off-by: Josef Bacik <josef@redhat.com>
2010-12-09 13:57:13 -05:00
Josef Bacik 2b20982e31 Btrfs: deal with space cache errors better
Currently if the space cache inode generation number doesn't match the
generation number in the space cache header we will just fail to load the space
cache, but we won't mark the space cache as an error, so we'll keep getting that
error each time somebody tries to cache that block group until we actually clear
the thing.  Fix this by marking the space cache as having an error so we only
get the message once.  This patch also makes it so that we don't try and setup
space cache for a block group that isn't cached, since we won't be able to write
it out anyway.  None of these problems are actual problems, they are just
annoying and sub-optimal.  Thanks,

Signed-off-by: Josef Bacik <josef@redhat.com>
2010-12-09 13:57:12 -05:00
Josef Bacik 955256f2c3 Btrfs: fix use after free in O_DIRECT
This fixes a bug where we use dip after we have freed it.  Instead just use the
file_offset that was passed to the function.  Thanks,

Signed-off-by: Josef Bacik <josef@redhat.com>
2010-12-09 13:57:10 -05:00
Christof Schmitt e55f87531c [SCSI] zfcp: Issue FCP command without holding SCSI host_lock
Interrupting the connection to the FCP channel while I/O requests are
being issued can lead to this deadlock. scsi_dispatch_cmd already
holds the host_lock while the recovery trigger tries to acquire the
host_lock again when iterating through the scsi_devices.

 INFO: lockdep is turned off.
 BUG: spinlock lockup on CPU#1, blast/9660, 0000000078f38878
 CPU: 1 Not tainted 2.6.35.7SWEN2 #2
 Process blast (pid: 9660, task: 0000000071f75940, ksp: 0000000074393ac0)
        0000000074393640 00000000743935c0 0000000000000002 0000000000000000
        0000000074393660 00000000743935d8 00000000743935d8 00000000005590c2
        0000000000000000 0000000078f38878 0000000026ede800 0000000078f38878
        000000000000000d 040000000000000c 0000000074393628 0000000000000000
        0000000000000000 0000000000100b2a 00000000743935c0 0000000074393600
 Call Trace:
 ([<0000000000100a32>] show_trace+0xee/0x144)
  [<00000000003be202>] do_raw_spin_lock+0x112/0x178
  [<000000000055d408>] _raw_spin_lock_irqsave+0x90/0xb0
  [<00000000003f1514>] __scsi_iterate_devices+0x38/0xbc
  [<00000000004849b0>] zfcp_erp_clear_adapter_status+0xd0/0x16c
  [<000000000048587a>] zfcp_erp_adapter_reopen+0x3a/0xb4
  [<0000000000489812>] zfcp_fsf_req_send+0x166/0x180
  [<000000000048c8d6>] zfcp_fsf_fcp_cmnd+0x272/0x408
  [<000000000048f864>] zfcp_scsi_queuecommand+0x11c/0x1e0
  [<00000000003f1f2a>] scsi_dispatch_cmd+0x1d6/0x324
  [<00000000003f9910>] scsi_request_fn+0x42c/0x56c
  [<00000000003828ae>] __blk_run_queue+0x86/0x140
  [<000000000037f742>] elv_insert+0x11a/0x208
  [<000000000038104c>] blk_insert_cloned_request+0x84/0xe4
  [<000003c0032b7c64>] dm_dispatch_request+0x6c/0x94 [dm_mod]
  [<000003c0032b7d5c>] map_request+0xd0/0x100 [dm_mod]
  [<000003c0032b9a78>] dm_request_fn+0xec/0x1bc [dm_mod]
  [<0000000000382c0e>] generic_unplug_device+0x5a/0x6c
  [<000003c0032b7f98>] dm_unplug_all+0x74/0x9c [dm_mod]
  [<00000000001d1272>] sync_page+0x76/0x9c
  [<00000000001d12ba>] sync_page_killable+0x22/0x60
  [<000000000055a768>] __wait_on_bit_lock+0xc0/0x124
  [<00000000001d1140>] __lock_page_killable+0x78/0x84
  [<00000000001d351c>] generic_file_aio_read+0x5a4/0x7e8
  [<0000000000228ec0>] do_sync_read+0xc8/0x12c
  [<0000000000229edc>] vfs_read+0xac/0x1ac
  [<000000000022a0d8>] SyS_read+0x58/0xa8
  [<00000000001146de>] sysc_noemu+0x10/0x16
  [<00000200000493c4>] 0x200000493c4
 INFO: lockdep is turned off.

Call zfcp_fsf_fcp_cmnd without the host_lock and disable the
interrupts when acquiring the req_q_lock. According to the patch
description in "[PATCH] Eliminate error handler overload of the SCSI
serial number", the serial_number is not used, so simply drop the
queuecommand wrapper function and run zfcp_scsi_queuecommand without
holding the host_lock.

Reviewed-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-09 09:41:23 -06:00
Swen Schillig 14718e3cd8 [SCSI] zfcp: Prevent usage w/o holding a reference
The ERP got values assigned for which no reference was taken.  This
can lead to an unpredictable race condition.  Fix this by only
assigning the values which are required and for which a reference was
pulled or is held implicitly.

Signed-off-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-09 09:41:21 -06:00
Swen Schillig d3e1088d68 [SCSI] zfcp: No ERP escalation on gpn_ft eval
If the evaluation of GPN_FT requests wants to remove an invalid port
from the system the zfcp_erp_port_shutdown function is triggered.
Depending on the system status a superior action (e.g. adapter reopen)
is required. This can lead to an invalid mem access of the port struct
which might be freed at the time since the superior action is not
holding a reference of the port which triggered this ERP action.

Signed-off-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-09 09:41:19 -06:00
Swen Schillig 6fbf25e86b [SCSI] zfcp: Correct false abort data assignment.
The request data assignment between the fsf abort initiator and its
corresponding handler is not consistent and leads to an unpredictable
behaviour, e.g. kernel panic.  This patch fixes this issue and assigns
the correct value.

Signed-off-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-09 09:41:18 -06:00
Swen Schillig 5bfb2c3148 [SCSI] zfcp: Fix common FCP request reception
The reception of a common FCP request should only be evaluated if the
corresponding SCSI request data is available. Therefore put the
information under the lock protection and verify the existence before
processing.  This fixes the following kernel panic.

Unable to handle kernel pointer dereference at virtual kernel address 0000000180000000
Oops: 003b [#1] PREEMPT SMP DEBUG_PAGEALLOC
CPU: 0 Not tainted 2.6.35.7-45.x.20101007-s390xdefault #1
Process blast (pid: 9711, task: 00000000a3be8e40, ksp: 00000000b221bac0)
Krnl PSW : 0704300180000000 0000000000489878 (zfcp_fsf_fcp_handler_common+0x4c/0x3a0)
           R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:0 CC:3 PM:0 EA:3
Krnl GPRS: 00000000b663c1b8 0000000180000000 000000007ab5bdf0 0000000000000000
           00000000b0ccd800 0000000000000018 07000000a3be8e78 00000000b5d3e600
           000000007ab5bdf0 0000000000000066 00000000b72137f0 00000000b72137f0
           0000000000000000 00000000005a8178 00000000bdf37a60 00000000bdf379f0
Krnl Code: 0000000000489866: e3c030000004       lg      %r12,0(%r3)
           000000000048986c: e310c0000004       lg      %r1,0(%r12)
           0000000000489872: e31011e00004       lg      %r1,480(%r1)
          >0000000000489878: 581011ec           l       %r1,492(%r1)
           000000000048987c: a774001c           brc     7,4898b4
           0000000000489880: b91400b1           lgfr    %r11,%r1
           0000000000489884: 5810405c           l       %r1,92(%r4)
           0000000000489888: 5510d00c           cl      %r1,12(%r13)
Call Trace:
([<000000000010d344>] debug_event_common+0x22c/0x244)
 [<000000000048a0b4>] zfcp_fsf_fcp_cmnd_handler+0x2c/0x3b4
 [<000000000048b5b6>] zfcp_fsf_req_complete+0x1b6/0x9dc
 [<000000000048bede>] zfcp_fsf_reqid_check+0x102/0x138
 [<000000000048e478>] zfcp_qdio_int_resp+0x70/0x110
 [<000000000044a1ec>] qdio_kick_handler+0xb0/0x19c
 [<000000000044c228>] __tiqdio_inbound_processing+0x30c/0xebc
 [<000000000014a5fc>] tasklet_action+0x1b4/0x1e8
 [<000000000014b676>] __do_softirq+0x106/0x1cc
 [<000000000010d91a>] do_softirq+0xe6/0xec
 [<000000000014b0c8>] irq_exit+0xd4/0xd8
 [<00000000004307ec>] do_IRQ+0x7c0/0xf54
 [<0000000000114d28>] io_return+0x0/0x16
 [<000000000055fef0>] sub_preempt_count+0x50/0xe4
([<00000000b1f873c0>] 0xb1f873c0)
 [<000000000055e25a>] _raw_spin_unlock+0x46/0x74
 [<0000000000241c40>] __d_lookup+0x288/0x2c8
 [<000000000023502c>] do_lookup+0x7c/0x25c
 [<0000000000237fa8>] link_path_walk+0x5e4/0xe2c
 [<0000000000238a00>] path_walk+0x98/0x148
 [<0000000000238c98>] do_path_lookup+0x74/0xc0
 [<000000000023989c>] user_path_at+0x64/0xa4
 [<000000000022e366>] vfs_fstatat+0x4e/0xb0
 [<000000000022e4d6>] SyS_newstat+0x2e/0x54
 [<00000000001146de>] sysc_noemu+0x10/0x16
 [<0000020000153456>] 0x20000153456
INFO: lockdep is turned off.
Last Breaking-Event-Address:
 [<000000000048a0ae>] zfcp_fsf_fcp_cmnd_handler+0x26/0x3b4

Signed-off-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-09 09:41:17 -06:00
James Bottomley 459dbf72e4 [SCSI] Eliminate error handler overload of the SCSI serial number
The error handler is using the test cmd->serial_number == 0 in the
abort routines to signal that the command to be aborted has already
completed normally.  This design was to close a race window in the
original error handler where a command could go through the normal
completion routines after it timed out but before error handling was
started.

Mike Anderson pointed out that when we converted our timeout and
softirq completions, we picked up atomicity here because the block
layer now mediates this with the REQ_ATOM_COMPLETE flag and guarantees
that *either* the command times out or our done routine is called, but
ensures we can't get both occurring.  That makes the serial number
zero check redundant and it can be removed.

Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-09 09:41:16 -06:00
Anil Ravindranath 5da6141005 [SCSI] pmcraid: disable msix and expand device config entry
Firmware requires a larger configuration entry size than the driver
currently allows, and MSI-X pretty much doesn't work with current FW,
so disable it for now.

Signed-off-by: Anil Ravindranath <anil_ravindranath@pmc-sierra.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-09 09:41:15 -06:00
James Smart c7a841f3ac [SCSI] bsg: correct fault if queue object removed while dev_t open
This patch corrects an issue in bsg that results in a general protection
fault if an LLD is removed while an application is using an open file
handle to a bsg device, and the application issues an ioctl. The fault
occurs because the class_dev is NULL, having been cleared in
bsg_unregister_queue() when the driver was removed.  With this
patch, a check is made for the class_dev, and the application
will receive ENXIO if the related object is gone.

Signed-off-by: Carl Lajeunesse <carl.lajeunesse@emulex.com>
Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-09 09:41:14 -06:00
Dan Carpenter 057f02a38e [SCSI] osd: checking NULL instead of ERR_PTR()
bio_map_kern() returns ERR_PTRs on failure and never returns NULL.

[jejb: remove redundant unlikely spotted by Tobias Klauser]
Signed-off-by: Dan Carpenter <error27@gmail.com>
Acked-by: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-09 09:24:13 -06:00
Danny Huang 1b39ed0cf5 regulator: tps6586x: correct register table
Correct the register table for SM2, LDO8, RTC

Change-Id: I45348cec5ffbb7da9bd7523764fb611b537236b8
Signed-off-by: Danny Huang <dahuang@nvidia.com>
Signed-off-by: Olof Johansson <olofj@chromium.org>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2010-12-09 09:23:43 +00:00
Danny Huang 1dbcf35cb5 regulator: tps6586x: Handle both enable reg/bits being the same
Change-Id: I40400bb65eab496bb1becd26b37a9653b99d4f41
Signed-off-by: Danny Huang <dahuang@nvidia.com>
Signed-off-by: Olof Johansson <olofj@chromium.org>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
  (Split into separate patches)
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2010-12-09 09:23:43 +00:00
Danny Huang 64db657b5a regulator: tps6586x: Fix TPS6586X_DVM to store goreg/bit
Change-Id: Idacf5e1e51dbbbcd5ea93f310a4e907977e7359e
Signed-off-by: Danny Huang <dahuang@nvidia.com>
Signed-off-by: Olof Johansson <olofj@chromium.org>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
  (Split into separate patches)
  (Minor formatting fixes)
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2010-12-09 09:23:43 +00:00
Danny Huang 4f58670709 regulator: tps6586x: Add missing bit mask generation
Change-Id: I76eaceb31b56264f6978af15db1e6fc7e2e01b5a
Signed-off-by: Danny Huang <dahuang@nvidia.com>
Signed-off-by: Olof Johansson <olofj@chromium.org>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
  (Split into separate patches)
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2010-12-09 09:23:43 +00:00
Alex Deucher f3886f85cf drm/radeon/kms: don't apply 7xx HDP flush workaround on AGP
It should be required for all 7xx asics, but seems to cause
problems on some AGP 7xx chips.

Fixes:
https://bugzilla.kernel.org/show_bug.cgi?id=19002

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Reported-and-Tested-by: Duncan <1i5t5.duncan@cox.net>
Cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-12-09 17:59:24 +10:00
Dan Carpenter 6f331623b9 drm: use after free in drm_queue_vblank_event()
The "e" pointer is either NULL or freed when we call
drm_vblank_put(dev, e->pipe) on the error path.  Just pass the "pipe"
variable directly instead.

I changed another caller to use "pipe" as well for consistency.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-12-09 17:27:25 +10:00
Takashi Iwai d70ab7f7ee Merge branch 'fix/asoc' into for-linus 2010-12-09 08:24:32 +01:00
Takashi Iwai 58936b29c4 Merge branch 'fix/hda' into for-linus 2010-12-09 08:24:25 +01:00
David Henningsson 8a96b1e020 ALSA: HDA: Quirk for Dell Vostro 320 to make microphone work
BugLink: http://launchpad.net/497546

Confirmed that the ideapad model works better than the current
quirk for Dell Vostro 320.

Cc: stable@kernel.org (2.6.35+)
Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2010-12-09 08:23:31 +01:00
Alex Deucher e76116ca96 drm/kms: remove spaces from connector names (v2)
Grub doesn't parse spaces in parameters correctly, so
this makes it impossible to force video= parameters
for kms on the grub kernel command line.

v2: shorten the names to make them easier to type.

Reported-by: Sergej Pupykin <ml@sergej.pp.ru>

Cc: Sergej Pupykin <ml@sergej.pp.ru>
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-12-09 17:19:12 +10:00
NeilBrown 589a594be1 md: protect against NULL reference when waiting to start a raid10.
When we fail to start a raid10 for some reason, we call
md_unregister_thread to kill the thread that was created.

Unfortunately md_thread() will then make one call into the handler
(raid10d) even though md_wakeup_thread has not been called.  This is
not safe and as md_unregister_thread is called after mddev->private
has been set to NULL, it will definitely cause a NULL dereference.

So fix this at both ends:
 - md_thread should only call the handler if THREAD_WAKEUP has been
   set.
 - raid10 should call md_unregister_thread before setting things
   to NULL just like all the other raid modules do.

This is applicable to 2.6.35 and later.

Cc: stable@kernel.org
Reported-by: "Citizen" <citizen_lee@thecus.com>
Signed-off-by: NeilBrown <neilb@suse.de>
2010-12-09 17:02:14 +11:00
NeilBrown 1a855a0606 md: fix bug with re-adding of partially recovered device.
With v0.90 metadata, a hot-spare does not become a full member of the
array until recovery is complete.  So if we re-add such a device to
the array, we know that all of it is as up-to-date as the event count
would suggest, and so it a bitmap-based recovery is possible.

However with v1.x metadata, the hot-spare immediately becomes a full
member of the array, but it record how much of the device has been
recovered.  If the array is stopped and re-assembled recovery starts
from this point.

When such a device is hot-added to an array we currently lose the 'how
much is recovered' information and incorrectly included it as a full
in-sync member (after bitmap-based fixup).
This is wrong and unsafe and could corrupt data.

So be more careful about setting saved_raid_disk - which is what
guides the re-adding of devices back into an array.
The new code matches the code in slot_store which does a similar
thing, which is encouraging.

This is suitable for any -stable kernel.

Reported-by: "Dailey, Nate" <Nate.Dailey@stratus.com>
Cc: stable@kernel.org
Signed-off-by: NeilBrown <neilb@suse.de>
2010-12-09 16:36:28 +11:00
NeilBrown a035fc3e25 md: fix possible deadlock in handling flush requests.
As recorded in
    https://bugzilla.kernel.org/show_bug.cgi?id=24012

it is possible for a flush request through md to hang.  This is due to
an interaction between the recursion avoidance in
generic_make_request, the insistence in md of only having one flush
active at a time, and the possibility of dm (or md) submitting two
flush requests to a device from the one generic_make_request.

If a generic_make_request call into dm causes two flush requests to be
queued (as happens if the dm table has two targets - they get one
each), these two will be queued inside generic_make_request.

Assume they are for the same md device.
The first is processed and causes 1 or more flush requests to be sent
to lower devices.  These get queued within generic_make_request too.
Then the second flush to the md device gets handled and it blocks
waiting for the first flush to complete.  But it won't complete until
the two lower-device requests complete, and they haven't even been
submitted yet as they are on the generic_make_request queue.

The deadlock can be broken by using a separate thread to submit the
requests to lower devices.  md has such a thread readily available:
md_wq.

So use it to submit these requests.

Reported-by: Giacomo Catenazzi <cate@cateee.net>
Tested-by: Giacomo Catenazzi <cate@cateee.net>
Signed-off-by: NeilBrown <neilb@suse.de>
2010-12-09 16:17:51 +11:00
NeilBrown a7a07e6965 md: move code in to submit_flushes.
submit_flushes is called from exactly one place.
Move the code that is before and after that call into
submit_flushes.

This has not functional change, but will make the next patch
smaller and easier to follow.

Signed-off-by: NeilBrown <neilb@suse.de>
2010-12-09 16:04:25 +11:00