38 lines
1.2 KiB
Diff
38 lines
1.2 KiB
Diff
This patch reverts: https://github.com/torvalds/linux/commit/eaf4fac478077d4ed57cbca2c044c4b58a96bd98
|
|
|
|
It works around following issues:
|
|
- no way to change MTU (tx_fifo_size is reported as 0 for Rockchip's dwmac)
|
|
|
|
Signed-off-by: Piotr Szczepanik <piter75@gmail.com>
|
|
|
|
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
|
|
index 122a06972..951d2281f 100644
|
|
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
|
|
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
|
|
@@ -3961,25 +3961,13 @@ static void stmmac_set_rx_mode(struct net_device *dev)
|
|
static int stmmac_change_mtu(struct net_device *dev, int new_mtu)
|
|
{
|
|
struct stmmac_priv *priv = netdev_priv(dev);
|
|
- int txfifosz = priv->plat->tx_fifo_size;
|
|
const int mtu = new_mtu;
|
|
-
|
|
- if (txfifosz == 0)
|
|
- txfifosz = priv->dma_cap.tx_fifo_size;
|
|
-
|
|
- txfifosz /= priv->plat->tx_queues_to_use;
|
|
|
|
if (netif_running(dev)) {
|
|
netdev_err(priv->dev, "must be stopped to change its MTU\n");
|
|
return -EBUSY;
|
|
}
|
|
|
|
- new_mtu = STMMAC_ALIGN(new_mtu);
|
|
-
|
|
- /* If condition true, FIFO is too small or MTU too large */
|
|
- if ((txfifosz < new_mtu) || (new_mtu > BUF_SIZE_16KiB))
|
|
- return -EINVAL;
|
|
-
|
|
dev->mtu = mtu;
|
|
|
|
netdev_update_features(dev);
|