[PATCH 3.16 084/328] net: mvneta: fix mtu change on port without link

From: Ben Hutchings
Date: Sun Dec 09 2018 - 17:13:10 EST

3.16.62-rc1 review patch. If anyone has any objections, please let me know.


From: Yelena Krivosheev <yelena@xxxxxxxxxxx>

commit 8466baf788ec3e18836bd9c91ba0b1a07af25878 upstream.

It is incorrect to enable TX/RX queues (call by mvneta_port_up()) for
port without link. Indeed MTU change for interface without link causes TX
queues to stuck.

Fixes: c5aff18204da ("net: mvneta: driver for Marvell Armada 370/XP
network unit")
Signed-off-by: Yelena Krivosheev <yelena@xxxxxxxxxxx>
[gregory.clement: adding Fixes tags and rewording commit log]
Signed-off-by: Gregory CLEMENT <gregory.clement@xxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
drivers/net/ethernet/marvell/mvneta.c | 1 -
1 file changed, 1 deletion(-)

--- a/drivers/net/ethernet/marvell/mvneta.c
+++ b/drivers/net/ethernet/marvell/mvneta.c
@@ -2475,7 +2475,6 @@ static int mvneta_change_mtu(struct net_

- mvneta_port_up(pp);