net/fec: fix fec1 check in fec_enet_mii_init()

In function fec_enet_mii_init(), it uses non-zero pdev->id as part
of the condition to check the second fec instance (fec1).  This works
before the driver supports device tree probe.  But in case of device
tree probe, pdev->id is -1 which is also non-zero, so the logic becomes
broken when device tree probe gets supported.

The patch change the logic to check "pdev->id > 0" as the part of the
condition for identifying fec1.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/net/ethernet/freescale/fec.c b/drivers/net/ethernet/freescale/fec.c
index 9c1d0594895..2bbe6a519bf 100644
--- a/drivers/net/ethernet/freescale/fec.c
+++ b/drivers/net/ethernet/freescale/fec.c
@@ -996,7 +996,7 @@ static int fec_enet_mii_init(struct platform_device *pdev)
          * mdio interface in board design, and need to be configured by
          * fec0 mii_bus.
          */
-        if ((id_entry->driver_data & FEC_QUIRK_ENET_MAC) && pdev->id) {
+        if ((id_entry->driver_data & FEC_QUIRK_ENET_MAC) && pdev->id > 0) {
                 /* fec1 uses fec0 mii_bus */
                 fep->mii_bus = fec0_mii_bus;
                 return 0;