dm9000: Support MAC address setting through platform data.

The dm9000 driver reads the chip's MAC address from the attached EEPROM. When
no EEPROM is present, or when the MAC address is invalid, it falls back to
reading the address from the chip.

This patch lets platform code set the desired MAC address through platform
data.

Signed-off-by: Laurent Pinchart <laurentp@cse-semaphore.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

2 files changed, 6 insertions, 0 deletions

diff --git a/drivers/net/dm9000.c b/drivers/net/dm9000.c
index 0b0f1c407a7e..f42c23f42652 100644
--- a/drivers/net/dm9000.c
+++ b/drivers/net/dm9000.c
@@ -1374,6 +1374,11 @@ dm9000_probe(struct platform_device *pdev)
         for (i = 0; i < 6; i += 2)
                 dm9000_read_eeprom(db, i / 2, ndev->dev_addr+i);
 
+        if (!is_valid_ether_addr(ndev->dev_addr) && pdata != NULL) {
+                mac_src = "platform data";
+                memcpy(ndev->dev_addr, pdata->dev_addr, 6);
+        }
+
         if (!is_valid_ether_addr(ndev->dev_addr)) {
                 /* try reading from mac */
                 
diff --git a/include/linux/dm9000.h b/include/linux/dm9000.h
index fc82446b6425..c30879cf93bc 100644
--- a/include/linux/dm9000.h
+++ b/include/linux/dm9000.h
@@ -27,6 +27,7 @@
 
 struct dm9000_plat_data {
         unsigned int    flags;
+        unsigned char   dev_addr[6];
 
         /* allow replacement IO routines */