phy: fix phy address bug

PHYID returns 0xffff and not 0xffffffff when not found and in some
case(at91sam9263) 0x0. Maybe this patch could be useful.

Signed-off-by: Giulio Benetti <giulio.benetti@micronovasrl.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c
index e11b03b2b25a776c2494951953feeb44777d2f84..8fb1faca883aef9126b547f09ecf830e4feb1562 100644 (file)
--- a/drivers/net/phy/phy_device.c
+++ b/drivers/net/phy/phy_device.c
@@ -227,8 +227,8 @@ struct phy_device * get_phy_device(struct mii_bus *bus, int addr)
        if (r)
                return ERR_PTR(r);
 
-       /* If the phy_id is all Fs, there is no device there */
-       if (0xffffffff == phy_id)
+       /* If the phy_id is all Fs or all 0s, there is no device there */
+       if ((0xffff == phy_id) || (0x00 == phy_id))
                return NULL;
 
        dev = phy_device_create(bus, addr, phy_id);