scsi: bfa: move bus reset to target reset

The bus reset handler is just calling target reset on all targets, which
is exactly what SCSI EH will be doing anyway.  So move the bus reset
function to target reset and drop the loop.
Signed-off-by: NHannes Reinecke <hare@suse.com>
Reviewed-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: NJohannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/bfa/bfad_im.c

@@ -373,32 +373,28 @@ bfad_im_reset_lun_handler(struct scsi_cmnd *cmnd)
 }
 
 /*
- * Scsi_Host template entry, resets the bus and abort all commands.
+ * Scsi_Host template entry, resets the target and abort all commands.
  */
 static int
-bfad_im_reset_bus_handler(struct scsi_cmnd *cmnd)
+bfad_im_reset_target_handler(struct scsi_cmnd *cmnd)
 {
 	struct Scsi_Host *shost = cmnd->device->host;
+	struct scsi_target *starget = scsi_target(cmnd->device);
 	struct bfad_im_port_s *im_port =
 				(struct bfad_im_port_s *) shost->hostdata[0];
 	struct bfad_s         *bfad = im_port->bfad;
 	struct bfad_itnim_s   *itnim;
 	unsigned long   flags;
-	u32        i, rc, err_cnt = 0;
+	u32        rc, rtn = FAILED;
 	DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq);
 	enum bfi_tskim_status task_status;
 
 	spin_lock_irqsave(&bfad->bfad_lock, flags);
-	for (i = 0; i < MAX_FCP_TARGET; i++) {
-		itnim = bfad_get_itnim(im_port, i);
-		if (itnim) {
-			cmnd->SCp.ptr = (char *)&wq;
-			rc = bfad_im_target_reset_send(bfad, cmnd, itnim);
-			if (rc != BFA_STATUS_OK) {
-				err_cnt++;
-				continue;
-			}
-
+	itnim = bfad_get_itnim(im_port, starget->id);
+	if (itnim) {
+		cmnd->SCp.ptr = (char *)&wq;
+		rc = bfad_im_target_reset_send(bfad, cmnd, itnim);
+		if (rc == BFA_STATUS_OK) {
 			/* wait target reset to complete */
 			spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 			wait_event(wq, test_bit(IO_DONE_BIT,
@@ -406,20 +402,17 @@ bfad_im_reset_bus_handler(struct scsi_cmnd *cmnd)
 			spin_lock_irqsave(&bfad->bfad_lock, flags);
 
 			task_status = cmnd->SCp.Status >> 1;
-			if (task_status != BFI_TSKIM_STS_OK) {
+			if (task_status != BFI_TSKIM_STS_OK)
 				BFA_LOG(KERN_ERR, bfad, bfa_log_level,
 					"target reset failure,"
 					" status: %d\n", task_status);
-				err_cnt++;
-			}
+			else
+				rtn = SUCCESS;
 		}
 	}
 	spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 
-	if (err_cnt)
-		return FAILED;
-
-	return SUCCESS;
+	return rtn;
 }
 
 /*
@@ -816,7 +809,7 @@ struct scsi_host_template bfad_im_scsi_host_template = {
 	.eh_timed_out = fc_eh_timed_out,
 	.eh_abort_handler = bfad_im_abort_handler,
 	.eh_device_reset_handler = bfad_im_reset_lun_handler,
-	.eh_bus_reset_handler = bfad_im_reset_bus_handler,
+	.eh_target_reset_handler = bfad_im_reset_target_handler,
 
 	.slave_alloc = bfad_im_slave_alloc,
 	.slave_configure = bfad_im_slave_configure,
@@ -839,7 +832,7 @@ struct scsi_host_template bfad_im_vport_template = {
 	.eh_timed_out = fc_eh_timed_out,
 	.eh_abort_handler = bfad_im_abort_handler,
 	.eh_device_reset_handler = bfad_im_reset_lun_handler,
-	.eh_bus_reset_handler = bfad_im_reset_bus_handler,
+	.eh_target_reset_handler = bfad_im_reset_target_handler,
 
 	.slave_alloc = bfad_im_slave_alloc,
 	.slave_configure = bfad_im_slave_configure,