diff options
Diffstat (limited to 'drivers/net/ethernet/stmicro/stmmac/stmmac_main.c')
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c index 070b5ef165eb..592d29abcb1c 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c @@ -986,10 +986,10 @@ static void stmmac_mac_link_up(struct phylink_config *config, bool tx_pause, bool rx_pause) { struct stmmac_priv *priv = netdev_priv(to_net_dev(config->dev)); - u32 ctrl; + u32 old_ctrl, ctrl; - ctrl = readl(priv->ioaddr + MAC_CTRL_REG); - ctrl &= ~priv->hw->link.speed_mask; + old_ctrl = readl(priv->ioaddr + MAC_CTRL_REG); + ctrl = old_ctrl & ~priv->hw->link.speed_mask; if (interface == PHY_INTERFACE_MODE_USXGMII) { switch (speed) { @@ -1064,7 +1064,8 @@ static void stmmac_mac_link_up(struct phylink_config *config, if (tx_pause && rx_pause) stmmac_mac_flow_ctrl(priv, duplex); - writel(ctrl, priv->ioaddr + MAC_CTRL_REG); + if (ctrl != old_ctrl) + writel(ctrl, priv->ioaddr + MAC_CTRL_REG); stmmac_mac_set(priv, priv->ioaddr, true); if (phy && priv->dma_cap.eee) { |