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134,929 commits

Author SHA1 Message Date
David Kilroy
543fd0a349 staging: wlags49_h2: Reindent hcf.c
Untabify with tab-width set to 4 (to match VI header). Then reindent
with tab-width reset to 8.

Signed-off-by: David Kilroy <kilroyd@googlemail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-09-16 20:34:52 +02:00
David Kilroy
788c2bce7e staging: wlags49_h2: Fix macro termination
Semi-colon terminate various macros (HCFASSERT, IF_PROT_TIME, IF_DMA,
PROT_CNT_INI, HCFLOGENTRY, HCFLOGEXIT, DAWA_ACK, DAWA_ZERO_FID) so
auto-indent will work correctly. Add appropriate do {} while
protection to the macros.

Signed-off-by: David Kilroy <kilroyd@googlemail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-09-16 20:34:51 +02:00
David Kilroy
fe4d275594 staging: wlags49_h2: Reindent hcfdef.h
Untabified with tab-width set to 4. Reindented with linux style.

Also remove BITN macros.

Signed-off-by: David Kilroy <kilroyd@googlemail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-09-16 20:34:51 +02:00
David Kilroy
ada4f4f804 staging: wlags49_h2: Remove non-linux configurations
For now just remove from hcfcfg.h, we will slowly remove the unused
configurations as we go

Signed-off-by: David Kilroy <kilroyd@googlemail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-09-16 20:34:51 +02:00
Jonathan Cameron
a9e39f9e80 staging:iio: move id and device name setting to iio_device_allocate.
The recent reorganization of the sysfs attribute registration had
the side effect of moving iio_device_register after registration of
triggers etc.  The side effect of this is that the id hadn't been
allocated by the time of trigger registration. Thus all triggers
based on device got the name <dev_name>-dev0 instead of <dev_name>-devN
where N is the iio device id.

This should also fix the lack of device name for some error messages
that we have been seeing (and I'd been meaning to track down) as
that has now moved earlier as well.

Reported-by: Manuel Stahl <manuel.stahl@iis.fraunhofer.de>
Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk>
Tested-by: Manuel Stahl <manuel.stahl@iis.fraunhofer.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-09-16 20:32:00 +02:00
Jonathan Cameron
cedd1a16bb staging:iio:adc:ad7606 add channel type specification to range attributes.
Cleaner and more consistent naming + makes one abi element we don't need
go away.

Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-09-16 20:32:00 +02:00
Jonathan Cameron
322c956367 staging:iio:tree wide. abi fixup for in_ out_ prefix introduction.
This patch set should bring all the attributes created outside
of chan_spec registration inline with the new abi.

Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk>
Acked-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-09-16 20:32:00 +02:00
Linus Torvalds
abbe0d3c26 Merge branch 'stable/bug.fixes' of git://oss.oracle.com/git/kwilk/xen
* 'stable/bug.fixes' of git://oss.oracle.com/git/kwilk/xen:
  xen/i386: follow-up to "replace order-based range checking of M2P table by linear one"
  xen/irq: Alter the locking to use a mutex instead of a spinlock.
  xen/e820: if there is no dom0_mem=, don't tweak extra_pages.
  xen: disable PV spinlocks on HVM
2011-09-16 11:28:11 -07:00
Aaro Koskinen
8775316e1a staging: xgifb: update TODO
There are no build warnings at the moment.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-09-16 20:16:48 +02:00
Aaro Koskinen
09d1cad15d staging: xgifb: add missing #include
Add a missing include to eliminate the following sparse warning:

drivers/staging/xgifb/vb_table.h:2572:28: warning: symbol 'XGI21_LCDCapList' was not declared. Should it be static?

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-09-16 20:16:48 +02:00
Aaro Koskinen
c44fa627c7 staging: xgifb: vb_init: use readl()/writel() to access iomapped memory
Use readl() and writel() in FB memory test instead of direct pointer
access, and also add iomem annotations for the FB memory.

The patch eliminates the following sparse warnings:

drivers/staging/xgifb/XGI_main_26.c:2113:69: warning: incorrect type in assignment (different address spaces)
drivers/staging/xgifb/XGI_main_26.c:2113:69:    expected unsigned char *static [addressable] [toplevel] [assigned] pjVideoMemoryAddress
drivers/staging/xgifb/XGI_main_26.c:2113:69:    got void [noderef] <asn:2>*
drivers/staging/xgifb/XGI_main_26.c:2399:30: warning: incorrect type in assignment (different address spaces)
drivers/staging/xgifb/XGI_main_26.c:2399:30:    expected char [noderef] <asn:2>*screen_base
drivers/staging/xgifb/XGI_main_26.c:2399:30:    got char *[addressable] [toplevel] [assigned] video_vbase
drivers/staging/xgifb/XGI_main_26.c:2430:31: warning: incorrect type in argument 1 (different address spaces)
drivers/staging/xgifb/XGI_main_26.c:2430:31:    expected void volatile [noderef] <asn:2>*addr
drivers/staging/xgifb/XGI_main_26.c:2430:31:    got char *[addressable] [toplevel] [assigned] video_vbase
drivers/staging/xgifb/XGI_main_26.c:2454:31: warning: incorrect type in argument 1 (different address spaces)
drivers/staging/xgifb/XGI_main_26.c:2454:31:    expected void volatile [noderef] <asn:2>*addr
drivers/staging/xgifb/XGI_main_26.c:2454:31:    got char *[addressable] [toplev

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-09-16 20:16:48 +02:00
Aaro Koskinen
4b4954621f staging: xgifb: unify #include order
Include Linux headers before driver's own headers.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-09-16 20:16:48 +02:00
Aaro Koskinen
863c02af58 staging: xgifb: main: use readb()/readw() to access iomapped memory
Use readb()/readw() instead of direct pointer access to read I/O mapped
memory and also add __iomem annotation.

The patch eliminates the following sparse warnings:

drivers/staging/xgifb/XGI_main_26.c:2125:35: warning: incorrect type in assignment (different address spaces)
drivers/staging/xgifb/XGI_main_26.c:2125:35:    expected char *[addressable] [toplevel] [assigned] mmio_vbase
drivers/staging/xgifb/XGI_main_26.c:2125:35:    got void [noderef] <asn:2>*
drivers/staging/xgifb/XGI_main_26.c:2439:31: warning: incorrect type in argument 1 (different address spaces)
drivers/staging/xgifb/XGI_main_26.c:2439:31:    expected void volatile [noderef] <asn:2>*addr
drivers/staging/xgifb/XGI_main_26.c:2439:31:    got char *[addressable] [toplevel] [assigned] mmio_vbase
drivers/staging/xgifb/XGI_main_26.c:2463:31: warning: incorrect type in argument 1 (different address spaces)
drivers/staging/xgifb/XGI_main_26.c:2463:31:    expected void volatile [noderef] <asn:2>*addr
drivers/staging/xgifb/XGI_main_26.c:2463:31:    got char *[addressable] [toplevel] [assigned] mmio_vbase

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-09-16 20:16:47 +02:00
Arvydas Sidorenko
d15cce5016 staging: crystalhd/bc_dts_types.h: typedef cleanup
Not much left out of this header file. All these typedefs can be found in stdint.h

Signed-off-by: Arvydas Sidorenko <asido4@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-09-16 20:12:56 +02:00
Yong Zhang
18e9351e45 staging: irq: Remove IRQF_DISABLED
This flag is a NOOP and can be removed now.

Signed-off-by: Yong Zhang <yong.zhang0@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-09-16 20:09:38 +02:00
K. Y. Srinivasan
6f27457b50 Staging: hv: netvsc: Cleanup the name and type of link_stat variable
Consistently name the variable tracking the link status. Use a consistent
type for this variable and get rid of some unnecessary parentheses as well.
I would like to thank Joe Perches <joe@perches.com> for suggesting these
changes and patiently helping me get here!

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-09-16 20:07:19 +02:00
K. Y. Srinivasan
3c4debad42 Staging: hv: netvsc: Rename deviceInfo as device_info
Rename deviceInfo as device_info.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-09-16 20:06:04 +02:00
K. Y. Srinivasan
b13cc345b6 Staging: hv: netvsc: Rename rndisDevice to rndis_device
Rename rndisDevice to rndis_device.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-09-16 20:06:04 +02:00
K. Y. Srinivasan
86c921af41 Staging: hv: netvsc: Rename netDevice as net_device
Rename netDevice as net_device.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-09-16 20:06:04 +02:00
K. Y. Srinivasan
d982042b9b Staging: hv: vmbus: Get rid of the module dependency
Hyper-V modules can be built as part of the kernel (not just as modules).
Get rid of the module dependency in Kconfig.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-09-16 20:06:03 +02:00
K. Y. Srinivasan
7bb52384b2 Staging: hv: vmbus: Do not allocate struct hv_device_info on the stack
struct hv_device_info is about 101 bytes in size. Do not allocate this structure
on the stack.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-09-16 20:06:03 +02:00
K. Y. Srinivasan
b0bb55175f Staging: hv: vmbus: Get rid of the ext field in struct hv_device
Now that we have eliminated all uses of the ext field in struct hv_device,
get rid of the ext field.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-09-16 20:06:03 +02:00
K. Y. Srinivasan
80e623887e Staging: hv: mousevsc: Get rid of the usage of the ext field in struct hv_device
Get rid of the usage of the ext field in struct hv_device for the mouse driver.
We do this by using the newly introduced functions to set and and get driver
specific data.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-09-16 20:06:03 +02:00
K. Y. Srinivasan
2ddd5e5fb3 Staging: hv: netvsc: Get rid of the usage of the ext field in struct hv_device
Now, eliminate the usage of ext field in struct  hv_device for netvsc driver.
We do this by registering pointer to struct netvsc_device as the driver
specific data and eliminating the current usage of driver specific data
to save and retrieve the pointer to struct net_device.
Additionally, all access to the driver specific data is through
the vmbus wrapper functions. As part of this cleanup, we also get rid
of some unnecessary debug print statements.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-09-16 20:06:03 +02:00
K. Y. Srinivasan
cd654ea1cc Staging: hv: storvsc: Eliminate the usage of ext field in struct hv_device
Now, eliminate the usage of ext field in struct  hv_device for storvsc driver.
We do this by registering pointer to struct storvsc_device as the driver
specific data and eliminating the current usage of driver specific data to
save and retrieve the pointer to struct Scsi_Host.
Additionally, all access to the driver specific data is through
the vmbus wrapper functions. Note that function to allocate the host
gives us a reference on the host object.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-09-16 20:06:03 +02:00
K. Y. Srinivasan
f810d592a2 Staging: hv: storvsc: Get rid of some unnecessary state and definitions
Now, get rid of some unnecessary state and definitions.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-09-16 20:06:02 +02:00
K. Y. Srinivasan
a13d35ab9f Staging: hv: storvsc: Get rid of alloc_stor_device() by inlining the code
Get rid of alloc_stor_device() by inlining the code.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-09-16 20:06:02 +02:00
K. Y. Srinivasan
6e4198ce18 Staging: hv: storvsc: Get rid of storvsc_dev_add() by inlining the code
Get rid of storvsc_dev_add() by inlining the code.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-09-16 20:06:02 +02:00
K. Y. Srinivasan
d4372179c8 Staging: hv: vmbus: Cleanup vmbus_remove()
vmbus_remove() cannot fail; clean it up accordingly.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-09-16 20:06:02 +02:00
K. Y. Srinivasan
ab101e86d0 Staging: hv: vmbus: Introduce functions for setting and getting driver data
Introduce vmbus specific wrapper functions to set/get driver specific data.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-09-16 20:06:02 +02:00
K. Y. Srinivasan
ef52a81bf5 Staging: hv: storvsc: Use the driver_data to identify ide
Use the driver_data to identify ide devices in storvsc_probe().

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-09-16 20:06:02 +02:00
K. Y. Srinivasan
84946899bd Staging: hv: vmbus: Change the signature of struct hv_driver probe function
In preparation to leveraging the driver_data field in struct
hv_vmbus_device_id, change the signature of struct hv_driver probe function.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-09-16 20:06:02 +02:00
K. Y. Srinivasan
3037a7b61f Staging: hv: vmbus: Introduce a utility function to match hv_vmbus_device_id
Introduce a utility function to match hv_vmbus_device_id.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-09-16 20:06:01 +02:00
Vasanthakumar Thiagarajan
170826dd0d ath6kl: Set the sme_state to disconnected in disconnect() callback
After a successful completion of disconnect() driver needs to set
it's sme_state to SME_DISCONNECTED to be in sync with cfg80211
state.

Signed-off-by: Vasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2011-09-16 18:49:26 +03:00
Vasanthakumar Thiagarajan
ac59a2b285 ath6kl: Remove auth type fall back in auto authentication mode
Target already tries with different authentication mechanism
when authentication type is configured to NL80211_AUTHTYPE_AUTOMATIC.
Remove this piece of code from driver. Having this code in driver
even affects auto + WEP authentication in some cases.

Signed-off-by: Vasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2011-09-16 18:49:26 +03:00
Kalle Valo
97e0496d05 ath6kl: add firmware capabilities support
The new firmware format includes capability bits which make it
possible to check what features the firmware supports. Add infrastructure
to read the capabilities. For now it only provides
ATH6KL_FW_CAPABILITY_HOST_P2P which is not even used anywhere yet, but that
will be added later.

Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2011-09-16 18:48:34 +03:00
Kalle Valo
8a13748034 ath6kl: read reserved ram size from firmware file
A new version of firmware needs different reserved ram size so read that
from the firmware image.

Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2011-09-16 18:48:34 +03:00
Kalle Valo
639d0b8996 ath6kl: read firmware start address from hardware
It's actually possible to read the firmware start address from hardware,
that way there's no need to hardcode the address in hardware.

Thanks to Chilam Ng for the idea.

Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2011-09-16 18:48:34 +03:00
Kalle Valo
991b27eaf9 ath6kl: refactor firmware ext data addr and reserved ram handling size
Less if clauses this way and again easier to override the values.

Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2011-09-16 18:48:34 +03:00
Kalle Valo
a01ac4144e ath6kl: refactor firmware load address code
Currently the load address was calculated everytime when it was needed,
and with a mess if clauses. Simplify this by adding a field to struct
ath6kl for each address and choose the address with simple switch
statements.

Also move the code just after target version is retrieved. That way it's
easier to override the values later in the boot process.

Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2011-09-16 18:48:34 +03:00
Kalle Valo
50d412346e ath6kl: add support for firmware API 2 format
In the new format all the format images are embedded into one file.

Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2011-09-16 18:48:34 +03:00
Kalle Valo
cfc301edfb ath6kl: fix busy loop in ath6kl_bmi_get_rx_lkahd()
Brent reported that ath6kl busy loops if firmware doesn't boot for some
reason (in this case he was using an older firmware which wasn't supported
by ath6kl).

Investigation revealed that this was even on purpose,
ath6kl_bmi_get_rx_lkahd() had a parameter to disable the timeout check,
which is extremely evil. I didn't find any reason why the timeout needs
to be disabled so I just removed the feature. The function already busyloops
a maximum of one second if it doesn't get an answer, even that's too long.
If something takes longer than that a more friendly approach is needed.

Reported-by: Brent Taylor <btaylor1@motorolasolutions.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2011-09-16 18:48:34 +03:00
Kalle Valo
772c31ee43 ath6kl: separate firmware fetch from upload
In preparation for the new firmware image format.

Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2011-09-16 18:48:34 +03:00
Sam Leffler
92ecbff48e ath6kl: query device tree for firmware board-id
When no default board data file is present query the device tree for a
board-id setting to identify the board data to use.  If the FDT lacks the
necesary info fall back to the previous behaviour of using a compile-time
board filename.

Signed-off-by: Sam Leffler <sleffler@chromium.org>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2011-09-16 18:48:34 +03:00
Christoph Hellwig
58fc73d10f tcm_fc: Work queue based approach instead of managing own thread and event based mechanism
Problem: Changed from wake_up_interruptible -> wake_up_process and
wait_event_interruptible-> schedule_timeout_interruptible broke the FCoE
target.  Earlier approach of wake_up_interruptible was also looking at
'queue_cnt' which is not necessary, because it increment of 'queue_cnt'
with wake_up_inetrriptible / waker_up_process introduces race condition.

Fix: Instead of fixing the code which used wake_up_process and remove
'queue_cnt', using work_queue based approach is cleaner and acheives
same result. As well, work queue based approach has less programming
overhead and OS manages threads which processes work queues.

This patch is developed by Christoph Hellwig and reviwed+validated by
Kiran Patil.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Kiran Patil <kiran.patil@intel.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2011-09-16 09:50:09 +00:00
Kiran Patil
079587b4eb tcm_fc: Invalidation of DDP context for FCoE target in error conditions
Problem: HW DDP context wasn;t invalidated in case of ABORTS, etc...
This leads to the problem where memory pages which are used for DDP
as user descriptor could get reused for some other purpose (such as to
satisfy new memory allocation request either by kernel or user mode threads)
and since HW DDP context was not invalidated, HW continue to write to
those pages, hence causing memory corruption.

Fix: Either on incoming ABORTS or due to exchange time out, allowed the
target to cleanup HW DDP context if it was setup for respective ft_cmd.
Added new function to perform this cleanup, furthur it can be enhanced
for other cleanup activity.

Additinal Notes: To avoid calling ddp_done from multiple places, composed
the functionality in helper function "ft_invl_hw_context" and it is being
called from multiple places. Cleaned up code in function "ft_recv_write_data"
w.r.t DDP.

Signed-off-by: Kiran Patil <kiran.patil@intel.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2011-09-16 09:29:27 +00:00
Roland Dreier
bcac364a24 target: Fix race between multiple invocations of target_qf_do_work()
When work is scheduled with schedule_work(), the work can end up
running on multiple CPUs at the same time -- this happens if
the work is already running on one CPU and schedule_work() is called
on another CPU.  This leads to list corruption with target_qf_do_work(),
which is roughly doing:

	spin_lock(...);
	list_for_each_entry_safe(...) {
		list_del(...);
		spin_unlock(...);

		// do stuff

		spin_lock(...);
	}

With multiple CPUs running this code, one CPU can end up deleting the
list entry that the other CPU is about to work on.

Fix this by splicing the list entries onto a local list and then
operating on that in the work function.  This way, each invocation of
target_qf_do_work() operates on its own local list and so multiple
invocations don't corrupt each other's list.  This also avoids dropping
and reacquiring the lock for each list entry.

Signed-off-by: Roland Dreier <roland@purestorage.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2011-09-16 09:29:20 +00:00
David S. Miller
986eaa9041 Merge branch 'master' of ../netdev-next/ 2011-09-16 02:58:54 -04:00
David S. Miller
52b9aca7ae Merge branch 'master' of ../netdev/ 2011-09-16 01:09:02 -04:00
Alexander Duyck
2c4af694fe ixgbe: Correctly name and handle MSI-X other interrupt
It was possible to inadvertently add additional interrupt causes to the
MSI-X other interrupt.  This occurred when things such as RX buffer overrun
events were being triggered at the same time as an event such as a Flow
Director table reinit request.  In order to avoid this we should be
explicitly programming only the interrupts that we want enabled.  In
addition I am renaming the ixgbe_msix_lsc function and interrupt to drop
any implied meaning of this being a link status only interrupt.

Unfortunately the patch is a bit ugly due to the fact that ixgbe_irq_enable
needed to be moved up before ixgbe_msix_other in order to have things
defined in the correct order.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2011-09-15 21:32:04 -07:00