ar71xx: ag71xx: store maximum frame length in the ag71xx struct

[openwrt/openwrt.git] / target / linux / ar71xx / files / drivers / net / ethernet / atheros / ag71xx / ag71xx_main.c

diff --git a/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_main.c b/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_main.c
index 0c2163f5be8880b01a593aeefec93a479ce256f6..281d0f568609a68a6b1d3f75cec51898e9cd226b 100644 (file)
--- a/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_main.c
+++ b/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_main.c
@@ -434,7 +434,7 @@ static void ag71xx_hw_setup(struct ag71xx *ag)
                  MAC_CFG2_PAD_CRC_EN | MAC_CFG2_LEN_CHECK);
 
        /* setup max frame length */
-       ag71xx_wr(ag, AG71XX_REG_MAC_MFL, AG71XX_TX_MTU_LEN);
+       ag71xx_wr(ag, AG71XX_REG_MAC_MFL, ag->max_frame_len);
 
        /* setup FIFO configuration registers */
        ag71xx_wr(ag, AG71XX_REG_FIFO_CFG0, FIFO_CFG0_INIT);
@@ -1048,8 +1048,10 @@ static void ag71xx_netpoll(struct net_device *dev)
 
 static int ag71xx_change_mtu(struct net_device *dev, int new_mtu)
 {
+       struct ag71xx *ag = netdev_priv(dev);
+
        if (new_mtu < 68 ||
-           new_mtu > AG71XX_TX_MTU_LEN - ETH_HLEN - ETH_FCS_LEN)
+           new_mtu > ag->max_frame_len - ETH_HLEN - ETH_FCS_LEN)
                return -EINVAL;
 
        dev->mtu = new_mtu;
@@ -1164,6 +1166,8 @@ static int ag71xx_probe(struct platform_device *pdev)
        ag->tx_ring.size = AG71XX_TX_RING_SIZE_DEFAULT;
        ag->rx_ring.size = AG71XX_RX_RING_SIZE_DEFAULT;
 
+       ag->max_frame_len = AG71XX_TX_MTU_LEN;
+
        ag->stop_desc = dma_alloc_coherent(NULL,
                sizeof(struct ag71xx_desc), &ag->stop_desc_dma, GFP_KERNEL);