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| author |   Chandrakanth Patil <chandrakanth.patil@broadcom.com> | 2019-06-25 16:34:23 +0530 |
|---|---|---|
| committer |   Martin K. Petersen <martin.petersen@oracle.com> | 2019-06-27 00:07:35 -0400 |
| commit | 7fa3174b3ef4e517ebb8a08078871ceab705a969 (patch) | |
| tree | 62b4274ce4e25bfe7333c4c3ac2f89a2b1ce3ae5 /drivers/scsi/megaraid/megaraid_sas_fusion.c | |
| parent | scsi: megaraid_sas: Call disable_irq from process IRQ poll (diff) | |
| download | linux-dev-7fa3174b3ef4e517ebb8a08078871ceab705a969.tar.xz linux-dev-7fa3174b3ef4e517ebb8a08078871ceab705a969.zip | |
scsi: megaraid_sas: Release Mutex lock before OCR in case of DCMD timeout
Issue: There is possibility of few DCMDs timing out with 'reset_mutex' lock
held. As part of DCMD timeout handling, driver calls function
megasas_reset_fusion which also tries to acquire same lock 'reset_mutex'
and end up with deadlock.
Fix: Upon timeout of DCMDs (which are fired with 'reset_mutex' lock held),
driver will release 'reset_mutex' before calling OCR function and will
acquire lock again after OCR function returns.
Signed-off-by: Sumit Saxena <sumit.saxena@broadcom.com>
Signed-off-by: Chandrakanth Patil <chandrakanth.patil@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/megaraid/megaraid_sas_fusion.c')
0 files changed, 0 insertions, 0 deletions