From: Alexey Khoroshilov <khoroshilov@ispras.ru>
Date: Tue, 6 May 2014 21:26:04 +0000 (+0400)
Subject: w1: do not unlock unheld list_mutex in __w1_remove_master_device()
X-Git-Tag: omap-for-v3.16/fixes-against-rc1~39^2~38^2~17
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a0f104644ec27ce5bbb36e950eb426dba9a3ad44;p=pandora-kernel.git

w1: do not unlock unheld list_mutex in __w1_remove_master_device()

w1_process_callbacks() expects to be called with dev->list_mutex held,
but it is the fact only in w1_process(). __w1_remove_master_device()
calls w1_process_callbacks() after it releases list_mutex.

The patch fixes __w1_remove_master_device() to acquire list_mutex
for w1_process_callbacks().

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Acked-by: David Fries <david@fries.net>
Acked-by: Evgeniy Polyakov <zbr@ioremap.net>
Cc: stable <stable@vger.kernel.org> # 3.15
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

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