net: mvneta: Check tx queue setup error in mvneta_change_mtu()

This commit checks the return code of mvneta_setup_txq() call
in mvneta_change_mtu(). Also, use the netdevice pointer directly
instead of dereferencing the port structure. While here, let's
fix a tiny comment typo.

Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 8 insertions, 4 deletions

diff --git a/drivers/net/ethernet/marvell/mvneta.c b/drivers/net/ethernet/marvell/mvneta.c
index 30346010a64e..d28327d1afd3 100644
--- a/drivers/net/ethernet/marvell/mvneta.c
+++ b/drivers/net/ethernet/marvell/mvneta.c
@@ -2425,24 +2425,28 @@ static int mvneta_change_mtu(struct net_device *dev, int mtu)
                 return 0;
 
         /* The interface is running, so we have to force a
-         * reallocation of the RXQs
+         * reallocation of the queues
          */
         mvneta_stop_dev(pp);
 
         mvneta_cleanup_txqs(pp);
         mvneta_cleanup_rxqs(pp);
 
-        pp->pkt_size = MVNETA_RX_PKT_SIZE(pp->dev->mtu);
+        pp->pkt_size = MVNETA_RX_PKT_SIZE(dev->mtu);
         pp->frag_size = SKB_DATA_ALIGN(MVNETA_RX_BUF_SIZE(pp->pkt_size)) +
                         SKB_DATA_ALIGN(sizeof(struct skb_shared_info));
 
         ret = mvneta_setup_rxqs(pp);
         if (ret) {
-                netdev_err(pp->dev, "unable to setup rxqs after MTU change\n");
+                netdev_err(dev, "unable to setup rxqs after MTU change\n");
                 return ret;
         }
 
-        mvneta_setup_txqs(pp);
+        ret = mvneta_setup_txqs(pp);
+        if (ret) {
+                netdev_err(dev, "unable to setup txqs after MTU change\n");
+                return ret;
+        }
 
         mvneta_start_dev(pp);
         mvneta_port_up(pp);