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During system shutdown or reboot, mpt3sas will reset the firmware back to
ready state. However, the driver leaves running a watchdog work item
intended to keep the firmware in operational state. This causes a second,
unneeded reset on shutdown and moves the firmware back to operational
instead of in ready state as intended. And if the mpt3sas_fwfault_debug
module parameter is set, this extra reset also panics the system.
mpt3sas's scsih_shutdown needs to stop the watchdog before resetting the
firmware back to ready state.
Link: https://lore.kernel.org/r/20220722142448.6289-1-djeffery@redhat.com
Fixes: fae21608c31c ("scsi: mpt3sas: Transition IOC to Ready state during shutdown")
Tested-by: Laurence Oberman <loberman@redhat.com>
Acked-by: Sreekanth Reddy <sreekanth.reddy@broadcom.com>
Signed-off-by: David Jeffery <djeffery@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
0fde22c542