net: stmmac: fix incorrect bit set in gmac4 mdio addr register

Fixing the gmac4 mdio write access to use MII_GMAC4_WRITE only instead of
OR together with MII_WRITE.

Signed-off-by: Kweh, Hock Leong <hock.leong.kweh@intel.com>
Acked-By: Joao Pinto <jpinto@synopsys.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
index fda01f770eff..b0344c213752 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
@@ -116,7 +116,7 @@ static int stmmac_mdio_write(struct mii_bus *bus, int phyaddr, int phyreg,
         unsigned int mii_address = priv->hw->mii.addr;
         unsigned int mii_data = priv->hw->mii.data;
 
-        u32 value = MII_WRITE | MII_BUSY;
+        u32 value = MII_BUSY;
 
         value |= (phyaddr << priv->hw->mii.addr_shift)
                 & priv->hw->mii.addr_mask;
@@ -126,6 +126,8 @@ static int stmmac_mdio_write(struct mii_bus *bus, int phyaddr, int phyreg,
                 & priv->hw->mii.clk_csr_mask;
         if (priv->plat->has_gmac4)
                 value |= MII_GMAC4_WRITE;
+        else
+                value |= MII_WRITE;
 
         /* Wait until any existing MII operation is complete */
         if (stmmac_mdio_busy_wait(priv->ioaddr, mii_address))