[PATCH net-next v3 03/12] net: ethernet: aquantia: Fixes for aq_ndev_change_mtu

[Pavel Belous]

From: Pavel Belous <pavel.bel...@aquantia.com>

1)Removed unnecessary comparsion "old_mtu == new_mtu".
This check is not needed. Function aq_ndev_change_mtu wont be called
if mtu has not changed.

2)Removed extra assignment ndev->mtu = new_mtu;
This assignment already done inside __dev_set_mtu().

3)Use core MTU checking for min_mtu.

Signed-off-by: Pavel Belous <pavel.bel...@aquantia.com>
---
 drivers/net/ethernet/aquantia/atlantic/aq_main.c | 12 +-----------
 drivers/net/ethernet/aquantia/atlantic/aq_nic.c  |  1 +
 2 files changed, 2 insertions(+), 11 deletions(-)

diff --git a/drivers/net/ethernet/aquantia/atlantic/aq_main.c 
b/drivers/net/ethernet/aquantia/atlantic/aq_main.c
index c17c70a..45c769e 100644
--- a/drivers/net/ethernet/aquantia/atlantic/aq_main.c
+++ b/drivers/net/ethernet/aquantia/atlantic/aq_main.c
@@ -100,20 +100,10 @@ static int aq_ndev_start_xmit(struct sk_buff *skb, struct 
net_device *ndev)
 static int aq_ndev_change_mtu(struct net_device *ndev, int new_mtu)
 {
        struct aq_nic_s *aq_nic = netdev_priv(ndev);
-       int err = 0;
+       int err = aq_nic_set_mtu(aq_nic, new_mtu + ETH_HLEN);
 
-       if (new_mtu == ndev->mtu) {
-               err = 0;
-               goto err_exit;
-       }
-       if (new_mtu < 68) {
-               err = -EINVAL;
-               goto err_exit;
-       }
-       err = aq_nic_set_mtu(aq_nic, new_mtu + ETH_HLEN);
        if (err < 0)
                goto err_exit;
-       ndev->mtu = new_mtu;
 
        if (netif_running(ndev)) {
                aq_ndev_close(ndev);
diff --git a/drivers/net/ethernet/aquantia/atlantic/aq_nic.c 
b/drivers/net/ethernet/aquantia/atlantic/aq_nic.c
index a153750..4b8d074 100644
--- a/drivers/net/ethernet/aquantia/atlantic/aq_nic.c
+++ b/drivers/net/ethernet/aquantia/atlantic/aq_nic.c
@@ -214,6 +214,7 @@ struct aq_nic_s *aq_nic_alloc_cold(const struct 
net_device_ops *ndev_ops,
        SET_NETDEV_DEV(ndev, dev);
 
        ndev->if_port = port;
+       ndev->min_mtu = ETH_MIN_MTU;
        self->ndev = ndev;
 
        self->aq_pci_func = aq_pci_func;
-- 
2.7.4