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Commit 3406384b authored by Mahesh Rajashekhara's avatar Mahesh Rajashekhara Committed by Martin K. Petersen
Browse files

scsi: smartpqi: Add retries for device reset 



Reviewed-by: default avatarAjish Koshy <ajish.koshy@microsemi.com>
Reviewed-by: default avatarMurthy Bhat <murthy.bhat@microsemi.com>
Reviewed-by: default avatarJustin Lindley <justin.lindley@microsemi.com>
Reviewed-by: default avatarScott Benesh <scott.benesh@microsemi.com>
Reviewed-by: default avatarDave Carroll <david.carroll@microsemi.com>
Reviewed-by: default avatarScott Teel <scott.teel@microsemi.com>
Reviewed-by: default avatarKevin Barnett <kevin.barnett@microsemi.com>
Signed-off-by: default avatarMahesh Rajashekhara <mahesh.rajashekhara@microsemi.com>
Signed-off-by: default avatarDon Brace <don.brace@microsemi.com>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent b212c251

drivers/scsi/smartpqi/smartpqi.h

+1 −0
Original line number Diff line number Diff line
@@ -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 */

drivers/scsi/smartpqi/smartpqi_init.c

+13 −1
Original line number Diff line number Diff line
@@ -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;



	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);