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| author |   Anand Lodnoor <anand.lodnoor@broadcom.com> | 2020-01-14 16:51:19 +0530 |
|---|---|---|
| committer |   Martin K. Petersen <martin.petersen@oracle.com> | 2020-01-15 23:21:03 -0500 |
| commit | 6d7537270e3283b92f9b327da9d58a4de40fe8d0 (patch) | |
| tree | 40fa4453a429b56f6f64435954d3fce9b7a674be /drivers/scsi/megaraid/megaraid_sas_fusion.h | |
| parent | scsi: megaraid_sas: Re-Define enum DCMD_RETURN_STATUS (diff) | |
| download | linux-dev-6d7537270e3283b92f9b327da9d58a4de40fe8d0.tar.xz linux-dev-6d7537270e3283b92f9b327da9d58a4de40fe8d0.zip | |
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>
Diffstat (limited to 'drivers/scsi/megaraid/megaraid_sas_fusion.h')
| -rw-r--r-- | drivers/scsi/megaraid/megaraid_sas_fusion.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.h b/drivers/scsi/megaraid/megaraid_sas_fusion.h index 8358b68d6259..d57ecc7f88d8 100644 --- a/drivers/scsi/megaraid/megaraid_sas_fusion.h +++ b/drivers/scsi/megaraid/megaraid_sas_fusion.h @@ -89,6 +89,7 @@ enum MR_RAID_FLAGS_IO_SUB_TYPE { #define MEGASAS_FP_CMD_LEN 16 #define MEGASAS_FUSION_IN_RESET 0 +#define MEGASAS_FUSION_OCR_NOT_POSSIBLE 1 #define RAID_1_PEER_CMDS 2 #define JBOD_MAPS_COUNT 2 #define MEGASAS_REDUCE_QD_COUNT 64 |