OSDN Git Service

scsi: megaraid_sas: Do not initiate OCR if controller is not in ready state
authorAnand Lodnoor <anand.lodnoor@broadcom.com>
Tue, 14 Jan 2020 11:21:19 +0000 (16:51 +0530)
committerMartin K. Petersen <martin.petersen@oracle.com>
Thu, 16 Jan 2020 04:21:03 +0000 (23:21 -0500)
commit6d7537270e3283b92f9b327da9d58a4de40fe8d0
tree40fa4453a429b56f6f64435954d3fce9b7a674be
parent201a810cc188af87d5798a383dc5115509e752ae
scsi: megaraid_sas: Do not initiate OCR if controller is not in ready state

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>
drivers/scsi/megaraid/megaraid_sas_base.c
drivers/scsi/megaraid/megaraid_sas_fusion.c
drivers/scsi/megaraid/megaraid_sas_fusion.h