- 14 Sep, 2016 10 commits
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John Garry authored
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>
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John Garry authored
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:
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John Garry authored
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:
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John Garry authored
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:
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John Garry authored
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:
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John Garry authored
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:
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Matthew R. Ochs authored
Commit 888baf06 ("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: 888baf06 ("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:
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Matthew R. Ochs authored
Commit 964497b3 ("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:
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Matthew R. Ochs authored
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:
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Matthew R. Ochs authored
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:
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- 09 Sep, 2016 7 commits
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Uma Krishnan authored
Commit 704c4b0d ("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: 704c4b0d ("cxlflash: Shutdown notify support for CXL Flash cards") Signed-off-by:
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Uma Krishnan authored
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:
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Wei Yongjun authored
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:
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Kiwoong Kim authored
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:
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Baoyou Xie authored
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:
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Baoyou Xie authored
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:
Dave Carroll <david.carroll@microsemi.com> Signed-off-by:
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Christophe JAILLET authored
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:
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- 04 Sep, 2016 6 commits
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Baoyou Xie authored
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:
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Julia Lawall authored
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:
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Baoyou Xie authored
We get 4 warnings about global functions without a declaration in the scsi pmcraid driver when building with W=1: drivers/scsi/pmcraid.c:309:6: warning: no previous prototype for 'pmcraid_init_cmdblk' [-Wmissing-prototypes] drivers/scsi/pmcraid.c:404:6: warning: no previous prototype for 'pmcraid_return_cmd' [-Wmissing-prototypes] drivers/scsi/pmcraid.c:1713:6: warning: no previous prototype for 'pmcraid_ioasc_logger' [-Wmissing-prototypes] drivers/scsi/pmcraid.c:3141:1: warning: no previous prototype for 'pmcraid_init_ioadls' [-Wmissing-prototypes] In fact, these functions are 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 it 'static'. Signed-off-by:
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Bryant G. Ly authored
SUPPORTED_FORMATS is 1 << 1 so it's never zero. Signed-off-by:
Bryant G. Ly <bryantly@linux.vnet.ibm.com> Signed-off-by:
Michael Cyr <mikecyr@linux.vnet.ibm.com> Signed-off-by:
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Bryant G. Ly authored
[mkp: applied by hand] Signed-off-by:
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Bryant G. Ly authored
The driver currently doesn't properly deregisters target sessions completely, so this will address that. Signed-off-by:
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- 02 Sep, 2016 17 commits
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Kevin Barnett authored
[mkp: fixed typo] Reviewed-by:
Scott Teel <scott.teel@microsemi.com> Reviewed-by:
Scott Benesh <scott.benesh@microsemi.com> Reviewed-by:
Tomas Henzl <thenzl@redhat.com> Signed-off-by:
Kevin Barnett <kevin.barnett@microsemi.com> Signed-off-by:
Don Brace <don.brace@microsemi.com> Reviewed-by:
Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by:
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Don Brace authored
added Documentation/scsi/smartpqi.txt [mkp: applied by hand] Reviewed-by:
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Kevin Barnett authored
The aacraid driver will not managage Microsemi smartpqi controllers, but will still manage older aacraid devices. Updated help section. Reviewed-by:
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Kevin Barnett authored
Some cache flush operations can take longer than the timeout value. Best to not impose a time limit to handle all cases. Reviewed-by:
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Kevin Barnett authored
minor cleanup of scsi queue command function Reviewed-by:
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Kevin Barnett authored
minor tweaks to update time support Reviewed-by:
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Kevin Barnett authored
reformatted pqi_num_elements_free() to match the rest of the driver Reviewed-by:
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Kevin Barnett authored
the driver no longer waits for the firmware to consume the event ack IU. Reviewed-by:
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Kevin Barnett authored
Fixes: 6c223761 'smartpqi: initial commit of Microsemi smartpqi driver' Fixed a bug where the driver would not free all of the controller resources if the controller ever went offline. Reviewed-by:
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Kevin Barnett authored
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Kevin Barnett authored
Eliminated timeout from LUN reset logic. Reviewed-by:
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Kevin Barnett authored
Made a couple of error messages more verbose. Reviewed-by:
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Kevin Barnett authored
Removed the workaround for the transition to spanning. Reviewed-by:
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Kevin Barnett authored
small change to make code look cleaner Reviewed-by:
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Kevin Barnett authored
Take advantage of controller improvements. Reviewed-by:
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Bhaktipriya Shridhar authored
The workqueues "ioc->reset_work_q" and "ioc->fw_event_q" queue a single work item &ioc->fault_reset_work and &fw_event->work, respectively and hence don't require ordering. Hence, they have been converted to use alloc_workqueue(). The WQ_MEM_RECLAIM flag has been set to ensure forward progress under memory pressure since the workqueue belongs to a storage driver which is being used on a memory reclaim path. Since there are fixed number of work items, explicit concurrency limit is unnecessary here. Signed-off-by:
Bhaktipriya Shridhar <bhaktipriya96@gmail.com> Acked-by:
Tejun Heo <tj@kernel.org> Signed-off-by:
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Bhaktipriya Shridhar authored
The workqueue "fc_rescan_work_q" queues multiple work items viz &ioc->fc_rescan_work, &ioc->fc_lsc_work, &ioc->fc_setup_reset_work, which require strict execution ordering. Hence, an ordered dedicated workqueue has been used. WQ_MEM_RECLAIM has been set since the workqueue is belongs to a storage driver which is being used on a memory reclaim path and hence, requires forward progress under memory pressure. Signed-off-by:
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