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>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@xxxxxxxxxxxx>
---
Hi!
This revision incorporates Simon's and Sergei's suggestions, namely calling
netdev_update_features() whether the device is up or not. Thanks to
reviewers!
CU
Uli
drivers/net/ethernet/renesas/ravb_main.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c
index ef8f089..00427e7 100644
--- a/drivers/net/ethernet/renesas/ravb_main.c
+++ b/drivers/net/ethernet/renesas/ravb_main.c
@@ -1811,11 +1811,14 @@ 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;
+ ravb_close(ndev);
ndev->mtu = new_mtu;
netdev_update_features(ndev);
+ if (netif_running(ndev))
+ return ravb_open(ndev);
+
return 0;
}
--
2.7.4
