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2016-09-19scsi: ipr: Don't log unnecessary 9084 error detailsBrian King2-3/+4
A 9084 error gets logged by the ipr adapter when adapter raw mode gets enabled. A bunch of unformatted hex data also gets logged for this error, which is of little use, so let's avoid logging it by default in order to avoid the log getting polluted with useless data. Signed-off-by: Brian King <brking@linux.vnet.ibm.com> Reviewed-by: Gabriel Krisman Bertazi <krisman@linux.vnet.ibm.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-09-19scsi: smartpqi: raid bypass lba calculation fixkevin Barnett1-1/+2
In the ioaccel path, the calculation of the starting LBA for READ(6)/WRITE(6) SCSI commands does not take into account the most significant 5 bits of the LBA: it only uses the least significant 16 bits of the starting LBA. Reported-by: Mahesh Rajashekhara <mahesh.rajashekhara@microsemi.com> Signed-off-by: Kevin Barnett <kevin.barnett@microsemi.com> Signed-off-by: Don Brace <don.brace@microsemi.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-09-19scsi: hpsa: correct scsi 6byte lba calculationMahesh Rajashekhara1-4/+10
Missing 5 bits of byte 1 in the LBA issued by SML. Reported-by: Mahesh Rajashekhara <mahesh.rajashekhara@microsemi.com> Reviewed-by: Scott Teel <scott.teel@microsemi.com> Reviewed-by: Kevin Barnett <kevin.barnett@microsemi.com> Signed-off-by: Mahesh Rajashekhara <mahesh.rajashekhara@microsemi.com> Signed-off-by: Don Brace <don.brace@microsemi.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-09-19scsi: ibmvscsis: Fixed unused variableBryant G. Ly1-3/+0
[mkp: applied by hand] Signed-off-by: Bryant G. Ly <bryantly@linux.vnet.ibm.com> Reviewed-by: Tyrel Datwyler <tyreld@linux.vnet.ibm.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-09-19chcr/cxgb4i/cxgbit/RDMA/cxgb4: Allocate resources dynamically for all cxgb4 ULD'sHariprasad Shenai1-0/+3
Allocate resources dynamically to cxgb4's Upper layer driver's(ULD) like cxgbit, iw_cxgb4 and cxgb4i. Allocate resources when they register with cxgb4 driver and free them while unregistering. All the queues and the interrupts for them will be allocated during ULD probe only and freed during remove. Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-09-15blk-mq: remove ->map_queueChristoph Hellwig1-1/+0
All drivers use the default, so provide an inline version of it. If we ever need other queue mapping we can add an optional method back, although supporting will also require major changes to the queue setup code. This provides better code generation, and better debugability as well. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Keith Busch <keith.busch@intel.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-09-15scsi: arcmsr: Buffer overflow in arcmsr_iop_message_xfer()Dan Carpenter1-1/+7
We need to put an upper bound on "user_len" so the memcpy() doesn't overflow. Cc: <stable@vger.kernel.org> Reported-by: Marco Grassi <marco.gra@gmail.com> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-09-15scsi: ibmvscsis: Fix error return code in ibmvscsis_probe()Wei Yongjun1-0/+1
Fix to return error code -ENOMEM from the dma mapping error handling case instead of 0, as done elsewhere in this function. Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-09-15scsi: sd: Move DIF protection types to t10-pi.hChristoph Hellwig4-51/+30
These should go together with the rest of the T10 protection information defintions. [mkp: s/T10_DIF/T10_PI/] Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-09-15scsi: qla2xxx: Use struct t10_pi_tupleChristoph Hellwig2-11/+1
Instead of defining a local version of it. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-09-15scsi: scsi_debug: Use struct t10_pi_tuple instead of struct sd_dif_tupleChristoph Hellwig2-16/+8
And remove the declaration of the latter in sd.h as scsi_debug was the only user. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-09-14scsi: hpsa: Check for null devices in ioaccel submission patchDon Brace1-0/+31
Reviewed-by: Scott Benesh <scott.benest@microsemi.com> Reviewed-by: Scott Teel <scott.teel@microsemi.com> Reviewed-by: Kevin Barnett <kevin.barnett@microsemi.com> Signed-off-by: Don Brace <don.brace@microsemi.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-09-14scsi: hpsa: Prevent sending bmic commands to externalsScott Teel1-1/+11
Reviewed-by: Scott Benesh <scott.benest@microsemi.com> Reviewed-by: Scott Teel <scott.teel@microsemi.com> Reviewed-by: Kevin Barnett <kevin.barnett@microsemi.com> Signed-off-by: Don Brace <don.brace@microsemi.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-09-14scsi: hpsa: Check for vpd support before sendingScott Teel2-13/+38
Before using vendor-specific VPD pages for getting raid_level and device_id, check for page support. If page isn't supported, don't try to use it. Also, pay attention to return status on hpsa_get_device_id. [mkp: fix boolean return warnings reported by kbuild test robot] Reviewed-by: Scott Benesh <scott.benest@microsemi.com> Reviewed-by: Scott Teel <scott.teel@microsemi.com> Reviewed-by: Kevin Barnett <kevin.barnett@microsemi.com> Signed-off-by: Don Brace <don.brace@microsemi.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-09-14scsi: hpsa: Check for null device pointersDon Brace1-3/+17
A device can be deleted causing NULL pointer issues. Reviewed-by: Scott Benesh <scott.benesh@microsemi.com> Reviewed-by: Scott Teel <scott.teel@microsemi.com> Reviewed-by: Kevin Barnett <kevin.barnett@microsemi.com> Signed-off-by: Don Brace <don.brace@microsemi.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-09-14scsi: hpsa: Determine device external status earlierDon Brace1-5/+5
Currently we are checking for external status before we are determining if a device is an external device. Reviewed-by: Scott Benesh <scott.benest@microsemi.com> Reviewed-by: Scott Teel <scott.teel@microsemi.com> Reviewed-by: Kevin Barnett <kevin.barnett@microsemi.com> Signed-off-by: Don Brace <don.brace@microsemi.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-09-14scsi: ncr5380: Improve interrupt latency during PIO tranfersFinn Thain2-4/+6
Large PIO transfers are broken up into chunks to try to avoid disabling local IRQs for long periods. But IRQs are still disabled for too long and this causes SCC FIFO overruns during serial port transfers. This patch reduces the PIO chunk size to reduce interrupt latency to something on the order of milliseconds, at the expense of additional CPU overhead from extra iterations of the NCR5380_main() loop. That CPU overhead is a problem for slow machines (e.g. mac_scsi on 25 MHz 68030) but these machines generally use PDMA not PIO. This patch doesn't make the overhead any worse on my Mac LC III (because it only gets about 510 accesses per ms). This patch decreases disk performance by a fraction of one percent for dmx3191d on my 333 MHz PowerPC 750. Other affected hardware (such as g_NCR5380 on x86) was not tested but 5380 ISA cards generally use PDMA and not PIO. [mkp: fix whitespace] Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Reviewed-by: Laurence Oberman <loberman@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-09-14scsi: virtio_scsi: Use complete() instead complete_all()Daniel Wagner1-1/+1
There is only one waiter for the completion, therefore there is no need to use complete_all(). Let's make that clear by using complete() instead of complete_all(). The usage pattern of the completion is: waiter context waker context virtscsi_tmf() DECLARE_COMPLETION_ONSTACK() virtscsi_kick_cmd() wait_for_completion() virtscsi_complete_free() complete() Signed-off-by: Daniel Wagner <daniel.wagner@bmw-carit.de> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-09-14scsi: sym53c8xx_2: Use complete() instead complete_all()Daniel Wagner1-1/+1
There is only one waiter for the completion, therefore there is no need to use complete_all(). Let's make that clear by using complete() instead of complete_all(). The usage pattern of the completion is: waiter context waker context sym_eh_handler() struct completion eh_done init_completion(eh_done) pci_channel_offline() wait_for_completion_timeout(eh_done) sym2_io_resume() complete(eh_done) Signed-off-by: Daniel Wagner <daniel.wagner@bmw-carit.de> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-09-14scsi: csiostor: Fix completion usageDaniel Wagner1-3/+2
The (re)initializing of the completion object should be done before we trigger the transfer. Doing this after triggering the hardware opens up a race window. Without the timeout we would problaly even deadlock. Use also reinit_completion because we initalize the whole data structure in csio_scscim_init(). There is only one waiter for the completion, therefore there is no need to use complete_all(). Let's make that clear by using complete() instead of complete_all(). The usage pattern of the completion is: waiter context waker context csio_eh_abort_handler() reinit_completion() wait_for_completion_timeout() csio_scsi_err_handler() complete() [mkp: fix typo] Signed-off-by: Daniel Wagner <daniel.wagner@bmw-carit.de> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-09-14scsi: megaraid_sas: add in missing white space in error message textColin Ian King1-1/+1
A dev_printk message spans two lines and the literal string is missing a white space between words. Add the white space. Signed-off-by: Colin Ian King <colin.king@canonical.com> Acked-by: Sumit Saxena <sumit.saxena@broadcom.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-09-14scsi: hisi_sas: send three identify before phy upJohn Garry1-4/+16
When the v2 hw is attached with many disks through an expander, there may be OOB reset resulting in a PHY going down after the speed is negotiated (very low probability). This issue is resolved by modifying the link control registers to send three identify frames before the PHY is ready (according to 6.10.3.3.2 in SAS 3.0 spec) and close ready when the PHY is down. Signed-off-by: NengLong Zhao <zhaonenglong@hisilicon.com> Signed-off-by: John Garry <john.garry@huawei.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-09-14scsi: hisi_sas: add missing SATA pending device type to v2 hwJohn Garry1-0/+1
In setup_itct_v2_hw(), SATA device type SAS_SATA_PENDING is missing, so add it. Note: The HiSi SAS controller does not support SATA PM, so do not handle SAS_SATA_PM_PORT or SAS_SATA_PM. Signed-off-by: John Garry <john.garry@huawei.com> Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-09-14scsi: hisi_sas: remove init_id_frame_v1_hw()John Garry1-10/+0
Function config_id_frame_v1_hw() is called twice for each PHY during initialisation, which is unneeded. So remove init_id_frame_v1_hw(), which only calls config_id_frame_v1_hw(). We will keep the call to config_id_frame_v1_hw() in start_phy_v1_hw() since it will be used for PHY reset functions. Signed-off-by: John Garry <john.garry@huawei.com> Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-09-14scsi: hisi_sas: remove init_id_frame_v2_hw()John Garry1-10/+0
Function config_id_frame_v2_hw() is called twice for each PHY during initialisation, which is unneeded. So remove init_id_frame_v2_hw(), which only calls config_id_frame_v2_hw(). We will keep the call to config_id_frame_v2_hw() in start_phy_v2_hw() since it will be used for PHY reset functions. Signed-off-by: John Garry <john.garry@huawei.com> Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-09-14scsi: hisi_sas: fix HBA SAS addr endianness for v1 hwJohn Garry1-4/+4
The endianness for the SAS address in the TX_ID_DWORD registers is set incorrectly. We see errors like this in the boot log for v2 hw (which would have the same issue as v1 hw): [ 7.583284] sas: target proto 0x0 at 50000d1108e7923f:0x1f not handled This is due to the host SAS addr not matching the PHY SAS addr in the expander host-attached phy discovery responses. To fix, we byte swap the SAS addr from BE to LE (which is the endianness of the SAS controller). Signed-off-by: John Garry <john.garry@huawei.com> Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-09-14scsi: hisi_sas: fix HBA SAS addr endianness for v2 hwJohn Garry1-4/+4
The endianness for the SAS address in the TX_ID_DWORD registers is set incorrectly. We see errors like this in the boot log: [ 7.583284] sas: target proto 0x0 at 50000d1108e7923f:0x1f not handled This is due to the host SAS addr not matching the PHY SAS addr in the expander host-attached phy discovery responses. To fix, we byte swap the SAS addr from BE to LE (which is the endianness of the SAS controller). Signed-off-by: John Garry <john.garry@huawei.com> Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-09-14scsi: hisi_sas: set dma mask before allocate DMA memoryJohn Garry1-7/+6
The device DMA mask was being set after the bulk of the DMA allocations in the driver init, so potentially DMA allocates fail. To resolve, relocate before allocating the DMA memory when initialising the driver. Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com> Signed-off-by: John Garry <john.garry@huawei.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-09-14scsi: hisi_sas: fix a potential warning for sata disk ejectionJohn Garry1-20/+6
If hisi_sas_task_prep() fails for a SATA device due to PHY down, we return a failure to libata and also call task_done(), which will cause ata_qc_complete() to be called twice: - first call from hisi_sas_task_prep(), which will clear flag ATA_QCFLAG_ACTIVE - ata_qc_complete() called from libata The warning call trace is as follows: [ 117.070206] [<ffff0000084f59b0>] __ata_qc_complete+0xf4/0x11c [ 117.070208] [<ffff0000084f5b58>] ata_qc_complete+0x180/0x200 [ 117.070210] [<ffff0000084f5dd0>] ata_qc_issue+0x110/0x354 [ 117.070212] [<ffff0000084f6254>] ata_exec_internal_sg+0x240/0x4d0 [ 117.070214] [<ffff0000084f6544>] ata_exec_internal+0x60/0xa0 [ 117.070217] [<ffff000008501580>] ata_read_log_page+0x188/0x1b4 [ 117.070218] [<ffff0000085017dc>] ata_eh_analyze_ncq_error+0xa8/0x274 [ 117.070220] [<ffff000008501a3c>] ata_eh_link_autopsy+0x94/0x8c8 [ 117.070222] [<ffff0000085022a4>] ata_eh_autopsy+0x34/0xe8 [ 117.070223] [<ffff00000850540c>] ata_do_eh+0x28/0xc0 [ 117.070225] [<ffff0000085054e0>] ata_std_error_handler+0x3c/0x84 [ 117.070227] [<ffff000008505140>] ata_scsi_port_error_handler+0x480/0x674 [ 117.070230] [<ffff0000084e3020>] async_sas_ata_eh+0x44/0x78 [ 117.070231] [<ffff0000080d6b8c>] async_run_entry_fn+0x40/0x104 [ 117.070234] [<ffff0000080ce518>] process_one_work+0x128/0x2f0 [ 117.070235] [<ffff0000080ce738>] worker_thread+0x58/0x434 [ 117.070237] [<ffff0000080d416c>] kthread+0xd4/0xe8 [ 117.070240] [<ffff000008084e10>] ret_from_fork+0x10/0x40 The issue is resolved by simply returning a failure status code to the upper layer. Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com> Signed-off-by: John Garry <john.garry@huawei.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-09-14scsi: hisi_sas: fix phy8 linkrate calculation in phy_up_v2_hw()John Garry1-3/+0
In function phy_up_v2_hw(), we needlessly recalculate the phy linkrate for all phys, and the calculation is incorrect for phy8, so remove this code. Signed-off-by: John Garry <john.garry@huawei.com> Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-09-14scsi: hisi_sas: disable dlvry queues once at reset for v2 hwJohn Garry1-3/+1
The Delivery queue enable register should only be written to once at reset for v2 hw. Signed-off-by: John Garry <john.garry@huawei.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-09-14scsi: hisi_sas: use safe BITS_PER_BYTE for slot tag size calculationJohn Garry1-1/+1
The memory calculation for the tags bitmap should use BITS_PER_BYTE macro instead of coincidental same value of sizeof(unsigned long). Signed-off-by: John Garry <john.garry@huawei.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-09-14scsi: hisi_sas: only zero slot memory when reusedJohn Garry1-1/+1
Currently the slot memory is zeroed when it is freed and also when it is reused, like in hisi_sas_task_prep(). Optimise by avoiding the redundant zeroing in the free. Signed-off-by: John Garry <john.garry@huawei.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-09-14scsi: hisi_sas: keep CHL_INT2 masked for v2 HWJohn Garry1-6/+0
None of the CHL_INT2 interrupts are serviced in the channel irq ISR, so leave the interrupt source masked. The interrupt mask is initially set in init_reg_v2_hw(). Signed-off-by: John Garry <john.garry@huawei.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-09-14scsi: hisi_sas: save delivery queue write pointerJohn Garry4-8/+25
Optimise by saving an avoidable read in the get_free_slot function. The delivery queue write pointer will only be updated by software, so don't bother re-reading what was already written in the previous call to start_delivery function. Signed-off-by: John Garry <john.garry@huawei.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-09-14scsi: hisi_sas: save completion queue read pointerJohn Garry3-7/+5
Optimise by saving an avoidable read in the cq interrupt. The queue read pointer will only be updated by software, so don't bother re-reading what was already written in the previous interrupt. Signed-off-by: John Garry <john.garry@huawei.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-09-14scsi: cxlflash: Fix context reference tracking on detachMatthew R. Ochs1-1/+2
Commit 888baf069f49 ("scsi: cxlflash: Add kref to context") introduced a kref to the context. In particular, the detach routine was updated to use the kref services for managing the removal and destruction of a context. As part of this change, the tracking mechanism internal to the detach handler was refactored. This introduced a bug that can cause the tracking state to be lost. This can lead to a situation where exclusive access to a context is prematurely [and unknowingly] relinquished for the executing thread. To remedy, only update the tracking state when the kref operation indicates the context was removed. Fixes: 888baf069f49 ("scsi: cxlflash: Add kref to context") Signed-off-by: Matthew R. Ochs <mrochs@linux.vnet.ibm.com> Acked-by: Uma Krishnan <ukrishn@linux.vnet.ibm.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-09-14scsi: cxlflash: Refactor WWPN setupMatthew R. Ochs1-31/+9
Commit 964497b3bf3f ("cxlflash: Remove dual port online dependency") logically removed the ability for the WWPN setup routine afu_set_wwpn() to return a non-success value. This routine can safely be made a void to simplify the code as there is no longer a need to report a failure. Signed-off-by: Matthew R. Ochs <mrochs@linux.vnet.ibm.com> Acked-by: Uma Krishnan <ukrishn@linux.vnet.ibm.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-09-14scsi: cxlflash: Improve EEH recovery timeMatthew R. Ochs1-0/+4
When an EEH occurs during device initialization, the port timeout logic can cause excessive delays as MMIO reads will fail. Depending on where they are experienced, these delays can lead to a prolonged reset, causing an unnecessary triggering of other timeout logic in the SCSI stack or user applications. To expedite recovery, the port timeout logic is updated to decay the timeout at a much faster rate when in the presence of a likely EEH frozen event. Signed-off-by: Matthew R. Ochs <mrochs@linux.vnet.ibm.com> Acked-by: Uma Krishnan <ukrishn@linux.vnet.ibm.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-09-14scsi: cxlflash: Fix to avoid EEH and host reset collisionsMatthew R. Ochs1-1/+14
The EEH reset handler is ignorant to the current state of the driver when processing a frozen event and initiating a device reset. This can be an issue if an EEH event occurs while a user or stack initiated reset is executing. More specifically, if an EEH occurs while the SCSI host reset handler is active, the reset initiated by the EEH thread will likely collide with the host reset thread. This can leave the device in an inconsistent state, or worse, cause a system crash. As a remedy, the EEH handler is updated to evaluate the device state and take appropriate action (proceed, wait, or disconnect host). The host reset handler is also updated to handle situations where an EEH occurred during a host reset. In such situations, the host reset handler will delay reporting back a success to give the EEH reset an opportunity to complete. Signed-off-by: Matthew R. Ochs <mrochs@linux.vnet.ibm.com> Acked-by: Uma Krishnan <ukrishn@linux.vnet.ibm.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-09-09scsi: cxlflash: Remove the device cleanly in the system shutdown pathUma Krishnan1-12/+6
Commit 704c4b0ddc03 ("cxlflash: Shutdown notify support for CXL Flash cards") was recently introduced to notify the AFU when a system is going down. Due to the position of the cxlflash driver in the device stack, cxlflash devices are _always_ removed during a reboot/shutdown. This can lead to a crash if the cxlflash shutdown hook is invoked _after_ the shutdown hook for the owning virtual PHB. Furthermore, the current implementation of shutdown/remove hooks for cxlflash are not tolerant to being invoked when the device is not enabled. This can also lead to a crash in situations where the remove hook is invoked after the device has been removed via the vPHBs shutdown hook. An example of this scenario would be an EEH reset failure while a reboot/shutdown is in progress. To solve both problems, the shutdown hook for cxlflash is updated to simply remove the device. This path already includes the AFU notification and thus this solution will continue to perform the original intent. At the same time, the remove hook is updated to protect against being called when the device is not enabled. Fixes: 704c4b0ddc03 ("cxlflash: Shutdown notify support for CXL Flash cards") Signed-off-by: Uma Krishnan <ukrishn@linux.vnet.ibm.com> Acked-by: Matthew R. Ochs <mrochs@linux.vnet.ibm.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-09-09scsi: cxlflash: Scan host only after the port is ready for I/OUma Krishnan1-2/+2
When a port link is established, the AFU sends a 'link up' interrupt. After the link is up, corresponding initialization steps are performed on the card. Following that, when the card is ready for I/O, the AFU sends 'login succeeded' interrupt. Today, cxlflash invokes scsi_scan_host() upon receipt of both interrupts. SCSI commands sent to the port prior to the 'login succeeded' interrupt will fail with 'port not available' error. This is not desirable. Moreover, when async_scan is active for the host, subsequent scan calls are terminated with error. Due to this, the scsi_scan_host() call performed after 'login succeeded' interrupt could portentially return error and the devices may not be scanned properly. To avoid this problem, scsi_scan_host() should be called only after the 'login succeeded' interrupt. Signed-off-by: Uma Krishnan <ukrishn@linux.vnet.ibm.com> Acked-by: Matthew R. Ochs <mrochs@linux.vnet.ibm.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-09-09scsi: ibmvfc: fix typo in parameter descriptionWei Yongjun1-1/+1
Fix typo in parameter description. Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Reviewed-by: Tyrel Datwyler <tyreld@linux.vnet.ibm.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-09-09scsi: ufs: Fix a wrong string in power mode changeKiwoong Kim1-1/+1
I modified a string as described in UFS spec as follow: umpcrs -> upmcrs. [mkp: applied by hand] Signed-off-by: Kiwoong Kim <kwmad.kim@samsung.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-09-09scsi: bnx2fc: Mark symbols static where possibleBaoyou Xie4-8/+9
We get a few warnings when building kernel with W=1: drivers/scsi/bnx2fc/bnx2fc_els.c:257:6: warning: no previous prototype for 'bnx2fc_srr_compl' [-Wmissing-prototypes] drivers/scsi/bnx2fc/bnx2fc_els.c:367:6: warning: no previous prototype for 'bnx2fc_rec_compl' [-Wmissing-prototypes] drivers/scsi/bnx2fc/bnx2fc_fcoe.c:628:5: warning: no previous prototype for 'bnx2fc_percpu_io_thread' [-Wmissing-prototypes] drivers/scsi/bnx2fc/bnx2fc_fcoe.c:1413:26: warning: no previous prototype for 'bnx2fc_interface_create' [-Wmissing-prototypes] drivers/scsi/bnx2fc/bnx2fc_hwi.c:997:21: warning: no previous prototype for 'bnx2fc_alloc_work' [-Wmissing-prototypes] drivers/scsi/bnx2fc/bnx2fc_io.c:1082:5: warning: no previous prototype for 'bnx2fc_abts_cleanup' [-Wmissing-prototypes] .... In fact, these functions are only used in the file in which they are declared and don't need a declaration, but can be made static. so this patch marks these functions with 'static'. Signed-off-by: Baoyou Xie <baoyou.xie@linaro.org> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Chad Dupuis <chad.dupuis@qlogic.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-09-09scsi: aacraid: mark aac_src_select_comm() staticBaoyou Xie1-1/+1
We get 1 warning when building kernel with W=1: drivers/scsi/aacraid/src.c:616:5: warning: no previous prototype for 'aac_src_select_comm' [-Wmissing-prototypes] In fact, this function is only used in the file in which it is declared and don't need a declaration, but can be made static. so this patch marks this function with 'static'. Signed-off-by: Baoyou Xie <baoyou.xie@linaro.org> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Dave Carroll <david.carroll@microsemi.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-09-09scsi: bnx2fc: Simplify codeChristophe JAILLET1-2/+1
Calling 'list_splice' followed by 'INIT_LIST_HEAD' is equivalent to 'list_splice_init'. This has been spotted with the following coccinelle script: ///// @@ expression y,z; @@ - list_splice(y,z); - INIT_LIST_HEAD(y); + list_splice_init(y,z); Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Acked-by: Chad Dupuis <chad.dupuis@qlogic.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-09-06Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsiLinus Torvalds4-19/+8
Pull SCSI fixes from James Bottomley: "This is really three fixes, but the SES one comes in a bundle of three (making the replacement API available properly, using it and removing the non-working one). The SES problem causes an oops on hpsa devices because they attach virtual disks to the host which aren't SAS attached (the replacement API ignores them). The other two fixes are fairly minor: the sense key one means we actually resolve a newly added sense key and the RDAC device blacklisting is needed to prevent us annoying the universal XPORT lun of various RDAC arrays" * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: scsi: sas: remove is_sas_attached() scsi: ses: use scsi_is_sas_rphy instead of is_sas_attached scsi: sas: provide stub implementation for scsi_is_sas_rphy scsi: blacklist all RDAC devices for BLIST_NO_ULD_ATTACH scsi: fix upper bounds check of sense key in scsi_sense_key_string()
2016-09-04scsi: ufs: Add missing header dependencies for tc-dwc-g210Baoyou Xie1-0/+1
We get 2 warnings when build kernel with W=1: drivers/scsi/ufs/tc-dwc-g210.c:261:5: warning: no previous prototype for 'tc_dwc_g210_config_40_bit' [-Wmissing-prototypes] drivers/scsi/ufs/tc-dwc-g210.c:293:5: warning: no previous prototype for 'tc_dwc_g210_config_20_bit' [-Wmissing-prototypes] In fact, these functions are declared in ufs/tc-dwc-g210.h, so this patch add missing header dependencies Signed-off-by: Baoyou Xie <baoyou.xie@linaro.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-09-04scsi: sr: constify sr_pm_ops structureJulia Lawall1-1/+1
sr_pm_ops, of type struct dev_pm_ops, is never modified, so declare it as const. Done with the help of Coccinelle. Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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