From: Ursula Braun <braunu@de.ibm.com>
Date: Wed, 20 Jun 2007 10:58:02 +0000 (+0200)
Subject: s390: avoid inconsistent lock state in qeth
X-Git-Tag: v2.6.22-rc6~58
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=add3f2fa7a6cec16d35a95b9078e1ecc80a6f332;p=pandora-kernel.git

s390: avoid inconsistent lock state in qeth

ipv6_regen_rndid in net/ipv6/addrconf.c makes use of "write_lock_bh"
for its inet6_dev->lock. It may run in softirq-context.
qeth makes use of "read_lock" for the same inet6_dev->lock.
To avoid a potential deadlock situation, qeth should make use of
"read_lock_bh" for its usages of inet6_dev->lock.

Signed-off-by: Ursula Braun <braunu@de.ibm.com>
Signed-off-by: Frank Pavlic <fpavlic@de.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
---

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