---

yaml
---
r: 232879
b: refs/heads/master
c: 8b2e18f
h: refs/heads/master
i:
  232877: 00c66e5
  232875: c2b795c
  232871: 69c68ed
  232863: 54f0845
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 9853b97bccbd2b08ce5fef497f21fa7395f68823
+refs/heads/master: 8b2e18f662939fb3d9b0ffe5da953ba56d259e3a

trunk/drivers/s390/net/qeth_core_main.c

@@ -1887,8 +1887,16 @@ static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
 			QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
 			return 0;
 		}
-		card->info.max_mtu = mtu;
+		if (card->info.initial_mtu && (card->info.initial_mtu != mtu)) {
+			/* frame size has changed */
+			if (card->dev &&
+			    ((card->dev->mtu == card->info.initial_mtu) ||
+			     (card->dev->mtu > mtu)))
+				card->dev->mtu = mtu;
+			qeth_free_qdio_buffers(card);
+		}
 		card->info.initial_mtu = mtu;
+		card->info.max_mtu = mtu;
 		card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE;
 	} else {
 		card->info.initial_mtu = qeth_get_initial_mtu_for_card(card);