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| author | Mahesh Rajashekhara <mahesh.rajashekhara@microsemi.com> | 2018-12-08 01:28:16 +0300 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2018-12-20 06:23:34 +0300 |
| commit | 3406384b76a77ea3b3bab7923c1a3bd4649318f5 (patch) | |
| tree | a4f3c6ce0a167e4a9a7d018c4f8c38adafa214fe | |
| parent | b212c2510d7ca15af8758eade5e4002ed5267d1b (diff) | |
| download | linux-3406384b76a77ea3b3bab7923c1a3bd4649318f5.tar.xz | |
scsi: smartpqi: Add retries for device reset
Reviewed-by: Ajish Koshy <ajish.koshy@microsemi.com>
Reviewed-by: Murthy Bhat <murthy.bhat@microsemi.com>
Reviewed-by: Justin Lindley <justin.lindley@microsemi.com>
Reviewed-by: Scott Benesh <scott.benesh@microsemi.com>
Reviewed-by: Dave Carroll <david.carroll@microsemi.com>
Reviewed-by: Scott Teel <scott.teel@microsemi.com>
Reviewed-by: Kevin Barnett <kevin.barnett@microsemi.com>
Signed-off-by: Mahesh Rajashekhara <mahesh.rajashekhara@microsemi.com>
Signed-off-by: Don Brace <don.brace@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
| -rw-r--r-- | drivers/scsi/smartpqi/smartpqi.h | 1 | ||||
| -rw-r--r-- | drivers/scsi/smartpqi/smartpqi_init.c | 14 |
2 files changed, 14 insertions, 1 deletions
diff --git a/drivers/scsi/smartpqi/smartpqi.h b/drivers/scsi/smartpqi/smartpqi.h index bbf056ddd026..646982e45904 100644 --- a/drivers/scsi/smartpqi/smartpqi.h +++ b/drivers/scsi/smartpqi/smartpqi.h @@ -587,6 +587,7 @@ typedef u32 pqi_index_t; #define SOP_TASK_ATTRIBUTE_ACA 4 #define SOP_TMF_COMPLETE 0x0 +#define SOP_TMF_REJECTED 0x4 #define SOP_TMF_FUNCTION_SUCCEEDED 0x8 /* additional CDB bytes usage field codes */ diff --git a/drivers/scsi/smartpqi/smartpqi_init.c b/drivers/scsi/smartpqi/smartpqi_init.c index e195d9aa5734..0f28ce5ff32b 100644 --- a/drivers/scsi/smartpqi/smartpqi_init.c +++ b/drivers/scsi/smartpqi/smartpqi_init.c @@ -2665,6 +2665,9 @@ static int pqi_interpret_task_management_response( case SOP_TMF_FUNCTION_SUCCEEDED: rc = 0; break; + case SOP_TMF_REJECTED: + rc = -EAGAIN; + break; default: rc = -EIO; break; @@ -5218,14 +5221,23 @@ static int pqi_lun_reset(struct pqi_ctrl_info *ctrl_info, return rc; } +#define PQI_LUN_RESET_RETRIES 3 +#define PQI_LUN_RESET_RETRY_INTERVAL_MSECS 10000 /* Performs a reset at the LUN level. */ static int pqi_device_reset(struct pqi_ctrl_info *ctrl_info, struct pqi_scsi_dev *device) { int rc; + unsigned int retries; - rc = pqi_lun_reset(ctrl_info, device); + for (retries = 0;;) { + rc = pqi_lun_reset(ctrl_info, device); + if (rc != -EAGAIN || + ++retries > PQI_LUN_RESET_RETRIES) + break; + msleep(PQI_LUN_RESET_RETRY_INTERVAL_MSECS); + } if (rc == 0) rc = pqi_device_wait_for_pending_io(ctrl_info, device); |