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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>
This commit is contained in:
Kweh, Hock Leong 2016-12-28 04:07:41 +08:00 committed by David S. Miller
parent 610c908773
commit 5799fc9059
1 changed files with 3 additions and 1 deletions
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4
drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
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@ -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))