scsi: qla2xxx: Remove unused irq_cmd_count field.

When driver is unloaded, all sessions are torn down, all commmands are
flushed, chip is reset to ensure there is no knowledge of target mode in
ISP. The irq_cmd_count field was used to make sure all commands are
processed on top of that.  The irq_cmd_count is now redundant and not
needed.

Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/qla2xxx/qla_target.c

@@ -5355,8 +5355,6 @@ static void qlt_response_pkt(struct scsi_qla_host *vha, response_t *pkt)
 	 * Otherwise, some commands can stuck.
 	 */
 
-	tgt->irq_cmd_count++;
-
 	switch (pkt->entry_type) {
 	case CTIO_CRC2:
 	case CTIO_TYPE7:
@@ -5382,10 +5380,8 @@ static void qlt_response_pkt(struct scsi_qla_host *vha, response_t *pkt)
 		}
 
 		rc = qlt_chk_qfull_thresh_hold(vha, atio, true);
-		if (rc != 0) {
-			tgt->irq_cmd_count--;
+		if (rc != 0)
 			return;
-		}
 
 		rc = qlt_handle_cmd_for_atio(vha, atio);
 		if (unlikely(rc != 0)) {
@@ -5517,7 +5513,6 @@ static void qlt_response_pkt(struct scsi_qla_host *vha, response_t *pkt)
 		break;
 	}
 
-	tgt->irq_cmd_count--;
 }
 
 /*
@@ -5547,7 +5542,6 @@ void qlt_async_event(uint16_t code, struct scsi_qla_host *vha,
 	 * Otherwise, some commands can stuck.
 	 */
 
-	tgt->irq_cmd_count++;
 
 	switch (code) {
 	case MBA_RESET:			/* Reset */
@@ -5635,7 +5629,6 @@ void qlt_async_event(uint16_t code, struct scsi_qla_host *vha,
 		break;
 	}
 
-	tgt->irq_cmd_count--;
 }
 
 static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha,

drivers/scsi/qla2xxx/qla_target.h

@@ -790,7 +790,6 @@ struct qla_tgt {
 	 * because req_pkt() can drop/reaquire HW lock inside. Protected by
 	 * HW lock.
 	 */
-	int irq_cmd_count;
 	int atio_irq_cmd_count;
 
 	int datasegs_per_cmd, datasegs_per_cont, sg_tablesize;