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net: dsa: mv88e6xxx: Fix deadlock by double lock
authorAndrew Lunn <andrew@lunn.ch>
Thu, 4 Jun 2015 23:10:09 +0000 (01:10 +0200)
committerDavid S. Miller <davem@davemloft.net>
Sun, 7 Jun 2015 19:19:22 +0000 (12:19 -0700)
commit80edb722b919500450e83c49c20a9dc706de2fa6
tree9662d8e2475b9a8f3190f75c5a6aa191767778c9tree | snapshot (tar.gz zip)
parentd691f9e8d4405c334aa10d556e73c8bf44cb0e01commit | diff
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>
drivers/net/dsa/mv88e6xxx.c diff | blob | blame | history