ibmvfc: Process async events before command responses

Since async events could indicate changes to link status, or
events which could affect decisions made during discovery, we should
process async events prior to command completion responses.

Signed-off-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

drivers/scsi/ibmvscsi/ibmvfc.c

@@ -2783,27 +2783,27 @@ static void ibmvfc_tasklet(void *data)
 
 	spin_lock_irqsave(vhost->host->host_lock, flags);
 	while (!done) {
-		/* Pull all the valid messages off the CRQ */
-		while ((crq = ibmvfc_next_crq(vhost)) != NULL) {
-			ibmvfc_handle_crq(crq, vhost);
-			crq->valid = 0;
-		}
-
 		/* Pull all the valid messages off the async CRQ */
 		while ((async = ibmvfc_next_async_crq(vhost)) != NULL) {
 			ibmvfc_handle_async(async, vhost);
 			async->valid = 0;
 		}
 
-		vio_enable_interrupts(vdev);
-		if ((crq = ibmvfc_next_crq(vhost)) != NULL) {
-			vio_disable_interrupts(vdev);
+		/* Pull all the valid messages off the CRQ */
+		while ((crq = ibmvfc_next_crq(vhost)) != NULL) {
 			ibmvfc_handle_crq(crq, vhost);
 			crq->valid = 0;
-		} else if ((async = ibmvfc_next_async_crq(vhost)) != NULL) {
+		}
+
+		vio_enable_interrupts(vdev);
+		if ((async = ibmvfc_next_async_crq(vhost)) != NULL) {
 			vio_disable_interrupts(vdev);
 			ibmvfc_handle_async(async, vhost);
 			async->valid = 0;
+		} else if ((crq = ibmvfc_next_crq(vhost)) != NULL) {
+			vio_disable_interrupts(vdev);
+			ibmvfc_handle_crq(crq, vhost);
+			crq->valid = 0;
 		} else
 			done = 1;
 	}