From 4b921eda53366b319602351ff4d7256fafa4bd1b Mon Sep 17 00:00:00 2001
From: Karsten Keil <keil@b1-systems.de>
Date: Thu, 13 Sep 2012 04:36:20 +0000
Subject: [PATCH] mISDN: Fix wrong usage of flush_work_sync while holding locks

It is a bad idea to hold a spinlock and call flush_work_sync.
Move the workqueue cleanup outside the spinlock and use cancel_work_sync,
on closing the channel this seems to be the more correct function.
Remove the never used and constant return value of mISDN_freebchannel.

Signed-off-by: Karsten Keil <keil@b1-systems.de>
Cc: <stable@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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