tree 8a9d8d2964450bdcf9cb03f189bb04a93670af3f
parent 8b360321449e805bb8f9833b7e249c8cefacfb29
author Anand Lodnoor <anand.lodnoor@broadcom.com> 1579000879 +0530
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1581715943 -0500

scsi: megaraid_sas: Do not initiate OCR if controller is not in ready state

commit 6d7537270e3283b92f9b327da9d58a4de40fe8d0 upstream.

Driver initiates OCR if a DCMD command times out. But there is a deadlock
if the driver attempts to invoke another OCR before the mutex lock
(reset_mutex) is released from the previous session of OCR.

This patch takes care of the above scenario using new flag
MEGASAS_FUSION_OCR_NOT_POSSIBLE to indicate if OCR is possible.

Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/1579000882-20246-9-git-send-email-anand.lodnoor@broadcom.com
Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com>
Signed-off-by: Anand Lodnoor <anand.lodnoor@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>