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

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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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Konstantin Khlebnikov 2013-07-08 11:23:04 +04:00 • committed by David S. Miller

parent e057590b05

commit 56e0ef527b

1 changed files with 39 additions and 22 deletions

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drivers/net/caif/caif_serial.c

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