b44: Set PHY address to NO_PHY if reset fails.

Do a PHY reset to test if there is an active phy and set the PHY address
to B44_PHY_ADDR_NO_PHY in case of an not active phy. This is needed for
the Linksys WRTSL54GS and Asus WL-500W.
This patch was used in OpenWRT for a long time.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 5 insertions, 1 deletions

diff --git a/drivers/net/b44.c b/drivers/net/b44.c
index 180510ed92a5..71fa0bee8d36 100644
--- a/drivers/net/b44.c
+++ b/drivers/net/b44.c
@@ -338,7 +338,7 @@ static int b44_phy_reset(struct b44 *bp)
                 }
         }
 
-        return 0;
+        return err;
 }
 
 static void __b44_set_flow_ctrl(struct b44 *bp, u32 pause_flags)
@@ -2215,6 +2215,10 @@ static int __devinit b44_init_one(struct ssb_device *sdev,
          */
         b44_chip_reset(bp, B44_CHIP_RESET_FULL);
 
+        /* do a phy reset to test if there is an active phy */
+        if (b44_phy_reset(bp) < 0)
+                bp->phy_addr = B44_PHY_ADDR_NO_PHY;
+
         netdev_info(dev, "Broadcom 44xx/47xx 10/100BaseT Ethernet %pM\n",
                     dev->dev_addr);