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path: root/drivers/scsi/hpsa.c
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2014-11-24scsi: drop reason argument from ->change_queue_depthChristoph Hellwig
Drop the now unused reason argument from the ->change_queue_depth method. Also add a return value to scsi_adjust_queue_depth, and rename it to scsi_change_queue_depth now that it can be used as the default ->change_queue_depth implementation. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Mike Christie <michaelc@cs.wisc.edu> Reviewed-by: Hannes Reinecke <hare@suse.de>
2014-11-24scsi: don't allow setting of queue_depth bigger than can_queueChristoph Hellwig
We won't ever queue more commands than the host allows. Instead of letting drivers either reject or ignore this case handle it in common code. Note that various driver use internal constant or variables that are assigned to both shost->can_queue and checked in ->change_queue_depth - I did remove those checks as well. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Mike Christie <michaelc@cs.wisc.edu> Reviewed-by: Hannes Reinecke <hare@suse.de>
2014-11-20hpsa: remove spin lock around command allocationStephen M. Cameron
It is already using atomic test_and_set_bit to do the allocation. There is some microscopic chance of starvation, but it is so microscopic that it should never happen in reality. Signed-off-by: Don Brace <don.brace@pmcs.com> Reviewed-by: Webb Scales <webbnh@hp.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-11-20hpsa: always call pci_set_master after pci_enable_deviceRobert Elliott
If the kernel is booted with the reset_device parameter, which is done for kdump, then the driver needs to call pci_set_master after pci_enable_device to reenable bus mastering (since the preceding pci_disable_device call disables bus mastering). Also, place that after pci_request_regions both in the kdump code and the normal pci_init code. Remove the comment summarizing what pci_set_master does, with the incomplete commentary on the impact of pci_disable_device. Signed-off-by: Robert Elliott <elliott@hp.com> Signed-off-by: Don Brace <don.brace@pmcs.com> Reviewed-by: Don Brace <don.brace@pmcs.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-11-20hpsa: Convert SCSI LLD ->queuecommand() for host_lock less operationNicholas Bellinger
There isn't anything in hpsa that requires the host lock to be held during queuecommand. Signed-off-by: Don Brace <don.brace@pmcs.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org> Reviewed-by: Stephen M. Cameron <stephenmcameron@gmail.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-11-20hpsa: do not be so noisy about check conditionsStephen M. Cameron
We were printing a lot of useless information before ultimately just passing things up to the SCSI mid layer. Just let the midlayer handle it without LLD chatter. Signed-off-by: Don Brace <don.brace@pmcs.com> Signed-off-by: Stephen M. Cameron <stephenmcameron@gmail.com> Reviewed-by: Joe Handzik <joseph.t.handzik@hp.com> Reviewed-by: Scott Teel <scott.teel@hp.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-11-20hpsa: use atomics for commands_outstandingStephen M. Cameron
Use atomics for commands_outstanding instead of protecting with spin locks. Signed-off-by: Don Brace <don.brace@pmcs.com> Signed-off-by: Stephen M. Cameron <stephenmcameron@gmail.com> Reviewed-by: Joe Handzik <joseph.t.handzik@hp.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-11-20hpsa: get rid of type/attribute/direction bit field where possibleStephen M. Cameron
Using bit fields for hardware command fields isn't portable and relies on assumptions about how the compiler lays out the bits. We can fix this in the driver's internal command structure, but the ioctl interface we can't change because it is part of the userland ABI. Signed-off-by: Don Brace <don.brace@pmcs.com> Reviewed-by: Webb Scales <webb.scales@hp.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-11-20hpsa: fix endianness issue with scatter gather elementsStephen M. Cameron
The hardware needs little endian scatter gather addresses and lengths but we were not bothering to convert from cpu byte order as we should have been. On Intel, this is all just a bunch of no-ops macros, but it makes the code endian-clean(er). Signed-off-by: Don Brace <don.brace@pmcs.com> Signed-off-by: Robert Elliott <elliott@hp.com> Reviewed-by: Webb Scales <webbnh@hp.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-11-20hpsa: fix allocation sizes for CISS_REPORT_LUNs commandsStephen M. Cameron
We were allocating roughly double the amount of memory we should be due to ReportLUNdata and ExtendedReportLUNdata containing a non-zero sized array but adding extra memory to allocate as if the array were zero sized. Track the logical and physical sizes separately. Allocate the memory based on the specific data structure sizes. Signed-off-by: Don Brace <don.brace@pmcs.com> Reviewed-by: Webb Scales <webb.scales@hp.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-11-20hpsa: remove 'action required' phrasingStephen M. Cameron
In the case of LUN data changing, the driver will auto rescan and so it's not even true that "action" is "required". Remove "action required" phrases from warning messages and replace with description phrases. Signed-off-by: Don Brace <don.brace@pmcs.com> Reviewed-by: Stephen M. Cameron <stephenmcameron@gmail.com> Reviewed-by: Joe Handzik <joseph.t.handzik@hp.com> Reviewed-by: Webb Scales <webb.scales@hp.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-11-20hpsa: correct off-by-one sizing of chained SG blockWebb Scales
Correct the size calculation of the chained SG block Signed-off-by: Don Brace <don.brace@pmcs.com> Signed-off-by: Webb Scales <webbnh@hp.com> Reviewed-by: Stephen M. Cameron <stephenmcameron@gmail.com> Reviewed-by: Don Brace <don.brace@pmcs.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-11-20hpsa: fix a couple pci id table mistakesStephen M. Cameron
Fix a couple of pci id table mistakes: Subdevice ID 0x3323 missing from product[] table (another name for HP Smart Storage 1210m) Bogus 0x1925 subdevice id removed from hpsa_pci_device_id[] (no such thing.) Signed-off-by: Don Brace <don.brace@pmcs.com> Reviewed-by: Webb Scales <webbnh@hp.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-11-20hpsa: remove dev_warn prints from RAID-1ADMRobert Elliott
RAID-1ADM is unusable with dev_warn called on every command. Signed-off-by: Robert Elliott <elliott@hp.com> Signed-off-by: Don Brace <don.brace@pmcs.com> Reviewed-by: Stephen M. Cameron <stephenmcameron@gmail.com> Reviewed-by: Webb Scales <webbnh@hp.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-11-20hpsa: Clean up warnings from sparse.Don Brace
Clean up issues reported when running sparse. Signed-off-by: Don Brace <don.brace@pmcs.com> Reviewed-by: Webb Scales <webb.scales@hp.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-11-12scsi: don't set tagging state from scsi_adjust_queue_depthChristoph Hellwig
Remove the tagged argument from scsi_adjust_queue_depth, and just let it handle the queue depth. For most drivers those two are fairly separate, given that most modern drivers don't care about the SCSI "tagged" status of a command at all, and many old drivers allow queuing of multiple untagged commands in the driver. Instead we start out with the ->simple_tags flag set before calling ->slave_configure, which is how all drivers actually looking at ->simple_tags except for one worke anyway. The one other case looks broken, but I've kept the behavior as-is for now. Except for that we only change ->simple_tags from the ->change_queue_type, and when rejecting a tag message in a single driver, so keeping this churn out of scsi_adjust_queue_depth is a clear win. Now that the usage of scsi_adjust_queue_depth is more obvious we can also remove all the trivial instances in ->slave_alloc or ->slave_configure that just set it to the cmd_per_lun default. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Mike Christie <michaelc@cs.wisc.edu> Reviewed-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
2014-09-25hpsa: add missing pci_set_master in kdump pathTomas Henzl
Add a call to pci_set_master(...) missing in the previous patch "hpsa: refine the pci enable/disable handling". Found thanks to Rob Elliot. Signed-off-by: Tomas Henzl <thenzl@redhat.com> Reviewed-by: Robert Elliott <elliott@hp.com> Tested-by: Robert Elliott <elliott@hp.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-09-16hpsa: refine the pci enable/disable handlingTomas Henzl
When a second(kdump) kernel starts and the hard reset method is used the driver calls pci_disable_device without previously enabling it, so the kernel shows a warning - [ 16.876248] WARNING: at drivers/pci/pci.c:1431 pci_disable_device+0x84/0x90() [ 16.882686] Device hpsa disabling already-disabled device ... This patch fixes it, in addition to this I tried to balance also some other pairs of enable/disable device in the driver. Unfortunately I wasn't able to verify the functionality for the case of a sw reset, because of a lack of proper hw. Signed-off-by: Tomas Henzl <thenzl@redhat.com> Reviewed-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-09-16hpsa: Use pci_enable_msix_range() instead of pci_enable_msix()Alexander Gordeev
As result of deprecation of MSI-X/MSI enablement functions pci_enable_msix() and pci_enable_msi_block() all drivers using these two interfaces need to be updated to use the new pci_enable_msi_range() or pci_enable_msi_exact() and pci_enable_msix_range() or pci_enable_msix_exact() interfaces. Signed-off-by: Alexander Gordeev <agordeev@redhat.com> Acked-by: "Stephen M. Cameron" <scameron@beardog.cce.hp.com> Cc: iss_storagedev@hp.com Cc: linux-scsi@vger.kernel.org Cc: linux-pci@vger.kernel.org Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-09-16hpsa: Fallback to MSI rather than to INTx if MSI-X failedAlexander Gordeev
Currently the driver falls back to INTx mode when MSI-X initialization failed. This is a suboptimal behaviour for chips that also support MSI. This update changes that behaviour and falls back to MSI mode in case MSI-X mode initialization failed. Signed-off-by: Alexander Gordeev <agordeev@redhat.com> Acked-by: "Stephen M. Cameron" <scameron@beardog.cce.hp.com> Cc: iss_storagedev@hp.com Cc: linux-scsi@vger.kernel.org Cc: linux-pci@vger.kernel.org Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-08-08scsi: use pci_zalloc_consistentJoe Perches
Remove the now unnecessary memset too. Signed-off-by: Joe Perches <joe@perches.com> Cc: Adam Radford <linuxraid@lsi.com> Cc: "James E.J. Bottomley" <JBottomley@parallels.com> Cc: Jayamohan Kallickal <jayamohan.kallickal@emulex.com> Cc: Dario Ballabio <ballabio_dario@emc.com> Cc: Michael Neuffer <mike@i-Connect.Net> Cc: "Stephen M. Cameron" <scameron@beardog.cce.hp.com> Cc: Neela Syam Kolli <megaraidlinux@lsi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-07-25hpsa: fix bad -ENOMEM return value in hpsa_big_passthru_ioctlStephen M. Cameron
When copy_from_user fails, return -EFAULT, not -ENOMEM Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Reported-by: Robert Elliott <elliott@hp.com> Reviewed-by: Joe Handzik <joseph.t.handzik@hp.com> Reviewed-by: Scott Teel <scott.teel@hp.com> Reviewed by: Mike MIller <michael.miller@canonical.com> Cc: <stable@vger.kernel.org> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-07-25hpsa: remove online devices from offline device listStephen M. Cameron
When devices come on line, they should be removed from the list of offline devices that are monitored. Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Reviewed-by: Scott Teel <scott.teel@hp.com> Reviewed-by: Joe Handzik <joseph.t.handzik@hp.com> Reviewed by: Mike MIller <michael.miller@canonical.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-07-25hpsa: fix non-x86 buildsArnd Bergmann
commit 28e134464734 "[SCSI] hpsa: enable unit attention reporting" turns on unit attention notifications, but got the change wrong for all architectures other than x86, which now store an uninitialized value into the device register. Gcc helpfully warns about this: ../drivers/scsi/hpsa.c: In function 'hpsa_set_driver_support_bits': ../drivers/scsi/hpsa.c:6373:17: warning: 'driver_support' is used uninitialized in this function [-Wuninitialized] driver_support |= ENABLE_UNIT_ATTN; ^ This moves the #ifdef so only the prefetch-enable is conditional on x86, not also reading the initial register contents. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Fixes: 28e134464734 "[SCSI] hpsa: enable unit attention reporting" Cc: stable@vger.kernel.org # v3.14+ Acked-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-07-25hpsa: do not unconditionally copy sense dataRobert Elliott
Signed-off-by: Robert Elliott <elliott@hp.com> Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Reviewed-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-07-25hpsa: fix 6-byte READ/WRITE with 0 length data xferStephen M. Cameron
a 6-byte READ/WRITE CDB with a 0 block data transfer really means a 256 block data transfer. The RAID mapping code failed to handle this case. For 10/12/16 byte READ/WRITEs, 0 just means no data should be transferred, and should not trigger BUG_ON. Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Reported-by: Robert Elliott <elliott@hp.com> Reviewed-by: Robert Elliott <elliott@hp.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-07-25hpsa: make hpsa_init_one return -ENOMEM if allocation of h->lockup_detected ↵Stephen M. Cameron
fails Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Reviewed-by: Joe Handzik <joseph.t.handzik@hp.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-07-17scsi: use 64-bit LUNsHannes Reinecke
The SCSI standard defines 64-bit values for LUNs, and large arrays employing large or hierarchical LUN numbers become more and more common. So update the linux SCSI stack to use 64-bit LUN numbers. Signed-off-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Christoph Hellwig <hch@infradead.org> Reviewed-by: Ewan Milne <emilne@redhat.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-06-02hpsa: fix handling of hpsa_volume_offline return valueStephen M. Cameron
Make return value an int instead of an unsigned char so that we do not lose negative error return values. Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Reviewed-by: Webb Scales <webb.scales@hp.com> Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-06-02hpsa: return -ENOMEM not -1 on kzalloc failure in hpsa_get_device_idStephen M. Cameron
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: Mike Miller <michael.miller@canonical.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-06-02hpsa: remove messages about volume status VPD inquiry page not supportedStephen M. Cameron
They are annoying and do not help anyone. Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Reviewed-by: Justin Lindley <justin.lindley@hp.com> Reviewed-by: Mike Miller <michael.miller@hp.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-06-02hpsa: report check condition even if no sense data present for ioaccel2 modeStephen M. Cameron
It shouldn't happen that we get a check condition with no sense data, but if it does, we shouldn't just drop the check condition on the floor. Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Reviewed-by: Justin Lindley <justin.lindley@hp.com> Reviewed-by: Mike Miller <michael.miller@canonical.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-06-02hpsa: remove bad unlikely annotation from device list updating codeStephen M. Cameron
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Reviewed-by: Justin Lindley <justin.lindley@hp.com> Reviewed-by: Mike Miller <michael.miller@canonical.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-06-02hpsa: kill annoying messages about SSD Smart Path retriesStephen M. Cameron
There's nothing the user can or should do about these messages, the commands are retried down the normal RAID path, and the messages just flood the logs and sap performance. Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Reviewed-by: Joe Handzik <joseph.t.handzik@hp.com> Reviewed-by: Mike Miller <michael.miller@canonical.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-06-02hpsa: define extended_report_lun_entry data structureStephen M. Cameron
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Reviewed-by: Joe Handzik <joseph.t.handzik@hp.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-06-02hpsa: Rearrange start_io to avoid one unlock/lock sequence in main io pathStephen M. Cameron
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Reviewed-by: Joe Handzik <joseph.t.handzik@hp.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-06-02hpsa: avoid unnecessary readl on every command submissionStephen M. Cameron
for controllers which support either of the ioaccel transport methods. Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Reviewed-by: Mike Miller <michael.miller@canonical.com> Reviewed-by: Joe Handzik <joseph.t.handzik@hp.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-06-02hpsa: use per-cpu variable for lockup_detectedStephen M. Cameron
Avoid excessive locking by using per-cpu variable for lockup_detected Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Reviewed-by: Scott Teel <scott.teel@hp.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-06-02hpsa: set irq affinity hints to route MSI-X vectors across CPUsStephen M. Cameron
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Reviewed-by: Mike Miller <michael.miller@canonical.com> Reviewed-by: Scott Teel <scott.teel@hp.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-06-02hpsa: allocate reply queues individuallyStephen M. Cameron
Now that we can allocate more than 4 reply queues (up to 64) we shouldn't try to make them share the same allocation but should allocate them separately. Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Reviewed-by: Mike Miller <michael.miller@canonical.com> Reviewed-by: Scott Teel <scott.teel@hp.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-06-02hpsa: choose number of reply queues more intelligently.Stephen M. Cameron
No sense having 8 or 16 reply queues if you only have 4 cpus, and likewise no sense limiting to 8 reply queues if you have many more cpus. Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Reviewed-by: Mike Miller <michael.miller@canonical.com> Reviewed-by: Scott Teel <scott.teel@hp.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-06-02hpsa: use gcc aligned attribute instead of manually padding structsStephen M. Cameron
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Reviewed-by: Webb Scales <webb.scales@hp.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-06-02hpsa: change doorbell reset delay to ten secondsJustin Lindley
After 3.22 firmware, PMC firmware guys tell us the previous 5 second delay after a reset now needs to be 10 secs to avoid a PCIe error due to the driver looking at the controller too soon after the reset. Signed-off-by: Justin Lindley <justin.lindley@hp.com> Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Reviewed-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-06-02hpsa: allow passthru ioctls to work with bidirectional commandsStephen M. Cameron
Treat the the data direction bits as a bit mask allowing both READ and WRITE at the same time instead of testing for equality to see if it's a exclusively a READ or a WRITE. Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Reviewed-by: Mike Miller <michael.miller@canonical.com> Reviewed-by: Webb Scales <webb.scales@hp.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-06-02hpsa: remove unused fields from struct ctlr_infoStephen M. Cameron
The fields "major", "max_outstanding", and "usage_count" of struct ctlr_info were not used for anything. Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Reviewed-by: Mike Miller <michael.miller@canonical.com> Reviewed-by: Webb Scales <webb.scales@hp.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-05-28hpsa: fix bad comparison of signed with unsigned in hpsa_update_scsi_devicesJoe Handzik
rescan_hba_mode was defined as a u8 so could never be less than zero: rescan_hba_mode = hpsa_hba_mode_enabled(h); if (rescan_hba_mode < 0) goto out; Signed-off-by: Joe Handzik <joseph.t.handzik@hp.com> Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-05-19hpsa: do not ignore failure of sense controller parameters commandJoe Handzik
Signed-off-by: Joe Handzik <joseph.t.handzik@hp.com> Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-05-19hpsa: fix memory leak in hpsa_hba_mode_enabledJoe Handzik
And while we're at it fix a magic number Signed-off-by: Joe Handzik <joseph.t.handzik@hp.com> Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-05-19hpsa: add new Smart Array PCI IDs (May 2014)Joe Handzik
Signed-off-by: Scott Teel <scott.teel@hp.com> Signed-off-by: Joe Handzik <joseph.t.handzik@hp.com> Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Cc: stable@vger.kernel.org Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-05-19hpsa: Checking for a NULL return from a kzalloc callJoe Handzik
Checking for a NULL return from a kzalloc call in hpsa_get_pdisk_of_ioaccel2. Signed-off-by: Scott Teel <scott.teel@hp.com> Signed-off-by: Joe Handzik <joseph.t.handzik@hp.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
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