smsc95xx: set MII_BUSY bit to read/write PHY regs

The device datasheet specifies the BUSY bit must be set when reading
or writing phy registers.  This patch ensures we do that.

Signed-off-by: Steve Glendinning <steve.glendinning@shawell.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/usb/smsc95xx.c b/drivers/net/usb/smsc95xx.c
index 3286166415b479969cf0624a522baf3b6a97eb73..362cb8cfeb92b6021f48995226117ccd0c971faf 100644 (file)
--- a/drivers/net/usb/smsc95xx.c
+++ b/drivers/net/usb/smsc95xx.c
@@ -184,7 +184,7 @@ static int smsc95xx_mdio_read(struct net_device *netdev, int phy_id, int idx)
        /* set the address, index & direction (read from PHY) */
        phy_id &= dev->mii.phy_id_mask;
        idx &= dev->mii.reg_num_mask;
-       addr = (phy_id << 11) | (idx << 6) | MII_READ_;
+       addr = (phy_id << 11) | (idx << 6) | MII_READ_ | MII_BUSY_;
        ret = smsc95xx_write_reg(dev, MII_ADDR, addr);
        check_warn_goto_done(ret, "Error writing MII_ADDR");
 
@@ -221,7 +221,7 @@ static void smsc95xx_mdio_write(struct net_device *netdev, int phy_id, int idx,
        /* set the address, index & direction (write to PHY) */
        phy_id &= dev->mii.phy_id_mask;
        idx &= dev->mii.reg_num_mask;
-       addr = (phy_id << 11) | (idx << 6) | MII_WRITE_;
+       addr = (phy_id << 11) | (idx << 6) | MII_WRITE_ | MII_BUSY_;
        ret = smsc95xx_write_reg(dev, MII_ADDR, addr);
        check_warn_goto_done(ret, "Error writing MII_ADDR");