tree 9662d8e2475b9a8f3190f75c5a6aa191767778c9
parent d691f9e8d4405c334aa10d556e73c8bf44cb0e01
author Andrew Lunn <andrew@lunn.ch> 1433459409 +0200
committer David S. Miller <davem@davemloft.net> 1433704762 -0700

net: dsa: mv88e6xxx: Fix deadlock by double lock

ethtool -S on a DSA interface can deadlock for some switches because
the same lock is taken twice. Use the register read function which
expects the lock to be already held.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Fixes: 31888234b736 ("net: dsa: mv88e6xxx: Replace stats mutex with SMI mutex")
Signed-off-by: David S. Miller <davem@davemloft.net>