From: Konstantin Khlebnikov <khlebnikov@openvz.org>
Date: Mon, 8 Jul 2013 07:23:04 +0000 (+0400)
Subject: drivers/net: caif: fix wrong rtnl_is_locked() usage
X-Git-Tag: v3.11-rc1~64^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=56e0ef527b184b3de2d7f88c6190812b2b2ac6bf;p=pandora-kernel.git

drivers/net: caif: fix wrong rtnl_is_locked() usage

rtnl_is_locked() doesn't check who holds this lock, it just tells that it's
locked right now. if caif::ldisc_close really can be called under rtrnl_lock
then it should release net device in other context because there is no way
to grab rtnl_lock without deadlock.

This patch adds work which releases these devices. Also this patch fixes calling
dev_close/unregister_netdevice without rtnl_lock from caif_ser_exit().

Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org>
Cc: Dmitry Tarnyagin <dmitry.tarnyagin@lockless.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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