From: Alexey Khoroshilov <khoroshilov@ispras.ru>
Date: Fri, 16 Aug 2013 20:48:14 +0000 (+0300)
Subject: via-ircc: don't return zero if via_ircc_open() failed
X-Git-Tag: v3.11-rc7~11^2~13
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=18ebe5c1c63b46f1acc41f68af5d82d6b7b39d73;p=pandora-kernel.git

via-ircc: don't return zero if via_ircc_open() failed

If via_ircc_open() fails, data structures of the driver left uninitialized,
but probe (via_init_one()) returns zero. That can lead to null pointer dereference
in via_remove_one(), since it does not check drvdata for NULL.

The patch implements proper error code propagation.

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

Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>
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