net/fec: fix the use of pdev->id

The pdev->id is used in several places for different purpose.  All
these uses assume it's always the id of fec device which is >= 0.
However this is only true for non-DT case.  When DT plays, pdev->id
is always -1, which will break these pdev->id users.

Instead of fixing all these users one by one, this patch introduces
a new member 'dev_id' to 'struct fec_enet_private' for holding the
correct fec device id, and replaces all the existing uses of pdev->id
with this dev_id.

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

1 files changed, 7 insertions, 4 deletions

diff --git a/drivers/net/ethernet/freescale/fec.c b/drivers/net/ethernet/freescale/fec.c
index 1124ce0a159..c136230d50b 100644
--- a/drivers/net/ethernet/freescale/fec.c
+++ b/drivers/net/ethernet/freescale/fec.c
@@ -232,6 +232,7 @@ struct fec_enet_private {
         struct  platform_device *pdev;
 
         int     opened;
+        int     dev_id;
 
         /* Phylib and MDIO interface */
         struct  mii_bus *mii_bus;
@@ -837,7 +838,7 @@ static void __inline__ fec_get_mac(struct net_device *ndev)
 
         /* Adjust MAC if using macaddr */
         if (iap == macaddr)
-                 ndev->dev_addr[ETH_ALEN-1] = macaddr[ETH_ALEN-1] + fep->pdev->id;
+                 ndev->dev_addr[ETH_ALEN-1] = macaddr[ETH_ALEN-1] + fep->dev_id;
 }
 
 /* ------------------------------------------------------------------------- */
@@ -953,7 +954,7 @@ static int fec_enet_mii_probe(struct net_device *ndev)
         char mdio_bus_id[MII_BUS_ID_SIZE];
         char phy_name[MII_BUS_ID_SIZE + 3];
         int phy_id;
-        int dev_id = fep->pdev->id;
+        int dev_id = fep->dev_id;
 
         fep->phy_dev = NULL;
 
@@ -1031,7 +1032,7 @@ 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 > 0) {
+        if ((id_entry->driver_data & FEC_QUIRK_ENET_MAC) && fep->dev_id > 0) {
                 /* fec1 uses fec0 mii_bus */
                 fep->mii_bus = fec0_mii_bus;
                 return 0;
@@ -1063,7 +1064,7 @@ static int fec_enet_mii_init(struct platform_device *pdev)
         fep->mii_bus->read = fec_enet_mdio_read;
         fep->mii_bus->write = fec_enet_mdio_write;
         fep->mii_bus->reset = fec_enet_mdio_reset;
-        snprintf(fep->mii_bus->id, MII_BUS_ID_SIZE, "%x", pdev->id + 1);
+        snprintf(fep->mii_bus->id, MII_BUS_ID_SIZE, "%x", fep->dev_id + 1);
         fep->mii_bus->priv = fep;
         fep->mii_bus->parent = &pdev->dev;
 
@@ -1521,6 +1522,7 @@ fec_probe(struct platform_device *pdev)
         int i, irq, ret = 0;
         struct resource *r;
         const struct of_device_id *of_id;
+        static int dev_id;
 
         of_id = of_match_device(fec_dt_ids, &pdev->dev);
         if (of_id)
@@ -1548,6 +1550,7 @@ fec_probe(struct platform_device *pdev)
 
         fep->hwp = ioremap(r->start, resource_size(r));
         fep->pdev = pdev;
+        fep->dev_id = dev_id++;
 
         if (!fep->hwp) {
                 ret = -ENOMEM;