[PATCH] libfc: fix handling of fc frame in fc_exch_recv_bls()

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There seems that fp should get freed if exch is unavailable.

Signed-off-by: Hillf Danton <dhillf@xxxxxxxxx>
---

--- a/drivers/scsi/libfc/fc_exch.c	2010-09-13 07:07:38.000000000 +0800
+++ b/drivers/scsi/libfc/fc_exch.c	2010-10-19 21:35:08.000000000 +0800
@@ -1564,8 +1564,11 @@ static void fc_exch_recv_bls(struct fc_e
 				fc_frame_free(fp);
 			break;
 		case FC_RCTL_BA_ABTS:
-			fc_exch_recv_abts(ep, fp);
-			break;
+			if (ep) {
+				fc_exch_recv_abts(ep, fp);
+				break;
+			}
+			/* fall thru */
 		default:			/* ignore junk */
 			fc_frame_free(fp);
 			break;
--
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