net/faraday: Disallow using reversed MAC address from hardware
commite6c044f5f68e0071e94829c62dbb2549e44a09e9
authorGavin Shan <gwshan@linux.vnet.ibm.com>
Thu, 21 Jul 2016 01:42:54 +0000 (21 11:42 +1000)
committerDavid S. Miller <davem@davemloft.net>
Thu, 21 Jul 2016 04:05:18 +0000 (20 21:05 -0700)
tree335250940c09a3ac700bae1e9b20da68c44e388c
parentc0d661ca3701f38d9313ca3954e3741ad92e3aaa
net/faraday: Disallow using reversed MAC address from hardware

The initial MAC address is retrieved from hardware if it's not
provided by device-tree. The reserved MAC address from hardware
will be used if non-reserved MAC address is invalid. It will
cause mismatched MAC address seen by hardware and software.

This disallows using the reserved hardware MAC address to avoid
the mismatched MAC address seen by hardware and software.

Fixes: 113ce107afe9 ("net/faraday: Read MAC address from chip")
Suggested-by: David Laight <David.Laight@ACULAB.COM>
Suggested-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/ethernet/faraday/ftgmac100.c