r6040: warn about MAC address being unset

Some bootloader/BIOSes do not set the MAC
address, warn about that.

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

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/net/r6040.c b/drivers/net/r6040.c
index 7ac6fede6e6d..3354cceb75d2 100644
--- a/drivers/net/r6040.c
+++ b/drivers/net/r6040.c
@@ -1141,6 +1141,11 @@ static int __devinit r6040_init_one(struct pci_dev *pdev,
         adrp[1] = ioread16(ioaddr + MID_0M);
         adrp[2] = ioread16(ioaddr + MID_0H);
 
+        /* Some bootloader/BIOSes do not initialize
+         * MAC address, warn about that */
+        if (!(adrp[0] || adrp[1] || adrp[2]))
+                printk(KERN_WARNING DRV_NAME ": MAC address not initialized\n");
+
         /* Link new device into r6040_root_dev */
         lp->pdev = pdev;
         lp->dev = dev;