From: Arnd Bergmann <arnd@arndb.de>
Date: Wed, 26 Feb 2014 11:01:54 +0000 (+0100)
Subject: isdn: divert, hysdn: fix interruptible_sleep_on race
X-Git-Tag: v3.15-rc1~113^2~251
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c11da83bdae210e1d40a6755b78f8543a9be9227;p=pandora-kernel.git

isdn: divert, hysdn: fix interruptible_sleep_on race

These two drivers use identical code for their procfs status
file handling, which contains a small race against status
data becoming available while reading the file.

This uses wait_event_interruptible instead to fix this
particular race and eventually get rid of all sleep_on
instances. There seems to be another race involving
multiple concurrent readers of the same procfs file, which
I don't try to fix here.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Karsten Keil <isdn@linux-pingi.de>
Cc: netdev@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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