Uses the same method as various other drivers: shut the device down,
change the MTU, then bring it back up again.
Tested on Renesas D3 Draak board.
Signed-off-by: Ulrich Hecht <uli+renesas@xxxxxxxx>
---
drivers/net/ethernet/renesas/ravb_main.c | 11 +++++++----
1 file changed, 7 insertions(+), 4 deletions(-)
diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c
index ef8f089..02c247c 100644
--- a/drivers/net/ethernet/renesas/ravb_main.c
+++ b/drivers/net/ethernet/renesas/ravb_main.c
@@ -1810,13 +1810,16 @@ static int ravb_do_ioctl(struct net_device *ndev, struct ifreq *req, int cmd)
static int ravb_change_mtu(struct net_device *ndev, int new_mtu)
{
- if (netif_running(ndev))
- return -EBUSY;
+ if (!netif_running(ndev)) {
+ ndev->mtu = new_mtu;
+ netdev_update_features(ndev);
+ return 0;
+ }
+ ravb_close(ndev);
ndev->mtu = new_mtu;
- netdev_update_features(ndev);
- return 0;
+ return ravb_open(ndev);
}
static void ravb_set_rx_csum(struct net_device *ndev, bool enable)
--
2.7.4
