Commit bc0da3fc authored Oct 13, 2008 by Martin Langer Committed by David S. Miller Oct 13, 2008

de2104x: wrong MAC address fix



The de2104x returns sometimes a wrong MAC address. The wrong one is
like the original one, but it comes with an one byte shift. I found
this bug on an older alpha ev5 cpu. More details are available in Gentoo
bugreport #240718.

It seems the hardware is sometimes a little bit too slow for an
immediate access. This patch solves the problem by introducing a small
udelay.

Signed-off-by: Martin Langer <martin-langer@gmx.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent ebe05d06

drivers/net/tulip/de2104x.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -1688,6 +1688,7 @@ static void __devinit de21040_get_mac_address (struct de_private *de)
		unsigned i;

		dw32 (ROMCmd, 0); /* Reset the pointer with a dummy write. */
		udelay(5);

		for (i = 0; i < 6; i++) {
		int value, boguscnt = 100000;