Fix b44 phyaddr by applying the PHY-address mask. Closes #3712

- Adapted from patch by Michael Buesch on the linux-netdev mailing list.


git-svn-id: svn://svn.openwrt.org/openwrt/trunk@10649 3c298f89-4303-0410-b956-a3cf2f4a3e73

target/linux/brcm47xx/patches-2.6.23/121-fix_b44_phyaddr.patch

@@ -0,0 +1,15 @@
+Index: linux-2.6.23.16/drivers/net/b44.c
+===================================================================
+--- linux-2.6.23.16.orig/drivers/net/b44.c	2008-03-22 19:52:40.000000000 -0700
++++ linux-2.6.23.16/drivers/net/b44.c	2008-03-22 19:52:41.000000000 -0700
+@@ -2273,6 +2273,10 @@
+ 	       bp->phy_addr = sdev->bus->sprom.et1phyaddr;
+ 	       break;
+ 	}
++	/* Some ROMs have buggy PHY addresses with the high
++	 * bits set (sign extension?). Truncate them to a
++	 * valid PHY address. */
++	bp->phy_addr &= 0x1F;
+ 
+ 	memcpy(bp->dev->dev_addr, addr, 6);
+