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path: root/drivers/net/usb/smsc95xx.c
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Diffstat (limited to 'drivers/net/usb/smsc95xx.c')
-rw-r--r--drivers/net/usb/smsc95xx.c12
1 files changed, 11 insertions, 1 deletions
diff --git a/drivers/net/usb/smsc95xx.c b/drivers/net/usb/smsc95xx.c
index 66b3ab9..2edc2bc 100644
--- a/drivers/net/usb/smsc95xx.c
+++ b/drivers/net/usb/smsc95xx.c
@@ -29,6 +29,7 @@
#include <linux/crc32.h>
#include <linux/usb/usbnet.h>
#include <linux/slab.h>
+#include <linux/of_net.h>
#include "smsc95xx.h"
#define SMSC_CHIPNAME "smsc95xx"
@@ -765,6 +766,15 @@ static int smsc95xx_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd)
static void smsc95xx_init_mac_address(struct usbnet *dev)
{
+ const u8 *mac_addr;
+
+ /* maybe the boot loader passed the MAC address in devicetree */
+ mac_addr = of_get_mac_address(dev->udev->dev.of_node);
+ if (mac_addr) {
+ memcpy(dev->net->dev_addr, mac_addr, ETH_ALEN);
+ return;
+ }
+
/* try reading mac address from EEPROM */
if (smsc95xx_read_eeprom(dev, EEPROM_MAC_OFFSET, ETH_ALEN,
dev->net->dev_addr) == 0) {
@@ -775,7 +785,7 @@ static void smsc95xx_init_mac_address(struct usbnet *dev)
}
}
- /* no eeprom, or eeprom values are invalid. generate random MAC */
+ /* no useful static MAC address found. generate a random one */
eth_hw_addr_random(dev->net);
netif_dbg(dev, ifup, dev->net, "MAC address set to eth_random_addr\n");
}