r6040: check PHY status when bringing interface up

This patch makes the driver properly initialize the PHY
status if not correctly set by the bootloader/BIOS.
It prevents some boards to bring up the link on boot.

Signed-off-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/net/r6040.c b/drivers/net/r6040.c
index 92b14c871351..7ac6fede6e6d 100644
--- a/drivers/net/r6040.c
+++ b/drivers/net/r6040.c
@@ -1121,6 +1121,10 @@ static int __devinit r6040_init_one(struct pci_dev *pdev,
                 err = -EIO;
                 goto err_out_free_res;
         }
+        /* If PHY status change register is still set to zero it means the
+         * bootloader didn't initialize it */
+        if (ioread16(ioaddr + PHY_CC) == 0)
+                iowrite16(0x9f07, ioaddr + PHY_CC);
 
         /* Init system & device */
         lp->base = ioaddr;