tree f62842358cffb36a5df5a1f28e8e1cb820fb9b35
parent 5ab6329c5224d8135d76da18066edf3395f679f5
author Hauke Mehrtens <hauke@hauke-m.de> 1387502168 +0100
committer David S. Miller <davem@davemloft.net> 1387590528 -0500

b44: abort when no PHY is available at all

When the phy address is 31, this means that there is no PHY connected
to this MAC at all, no internal and no external PHY. Reading these PHY
registers causes a system reset on some routers.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: David S. Miller <davem@davemloft.net>