pcnet32: 79C975 fiber fix

From: "HARDY, Steven" <[email protected]>

I have found a bug in the pcnet32 driver (drivers/net/pcnet32.c) affecting all ethernet cards based on the AMD79C975 chip, using the fiber interface.

It's a one line fix, where some config registers get corrupted during initialisation (which stops the Fiber interface working with this chip)

This bug was introduced somewhere betweeen 2.4.17 and 2.6.x (noticed whilst upgrading to 2.6), and it may affect other chips too. I have checked all versions up to 2.6.11-bk6 and they are all broken.

@@ -1348,7 +1348,8 @@ pcnet32_probe1(unsigned long ioaddr, int
 	printk(KERN_INFO "%s: registered as %s\n", dev->name, lp->name);
     cards_found++;
 
-    a->write_bcr(ioaddr, 2, 0x1002);	/* enable LED writes */
+    /* enable LED writes */
+    a->write_bcr(ioaddr, 2, a->read_bcr(ioaddr, 2) | 0x1000);
 
     return 0;
 

Don Fry
[email protected]