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authorMurthy Bhat <Murthy.Bhat@microchip.com>2024-08-27 13:54:59 -0500
committerMartin K. Petersen <martin.petersen@oracle.com>2024-08-28 22:10:34 -0400
commit4e0a51716dae782822b5df6c3b29cc0915a9f802 (patch)
tree1a86f9dd9c417bfba78baca77be543bedab23102 /drivers/scsi/libsas/sas_init.c
parentdbc39b84540f746cc814e69b21e53e6d3e12329a (diff)
scsi: smartpqi: fix rare system hang during LUN reset
Correct a rare case where in a LUN reset occurs on a device and I/O requests for other devices persist in the driver's internal request queue. Part of a LUN reset involves waiting for our internal request queue to empty before proceeding. The internal request queue contains requests not yet sent down to the controller. We were clearing the requests queued for the LUN undergoing a reset, but not all of the queued requests. Causing a hang. For all requests in our internal request queue: Complete requests with DID_RESET for queued requests for the device undergoing a reset. Complete requests with DID_REQUEUE for all other queued requests. Reviewed-by: Scott Benesh <scott.benesh@microchip.com> Reviewed-by: Scott Teel <scott.teel@microchip.com> Reviewed-by: Mike McGowen <mike.mcgowen@microchip.com> Signed-off-by: Murthy Bhat <Murthy.Bhat@microchip.com> Signed-off-by: Don Brace <don.brace@microchip.com> Link: https://lore.kernel.org/r/20240827185501.692804-6-don.brace@microchip.com Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/libsas/sas_init.c')
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