From: H Hartley Sweeten <hsweeten@visionengravers.com>
Date: Fri, 20 Feb 2015 19:52:28 +0000 (-0700)
Subject: staging: comedi: rtd520: remove unnecessary interrupt disable
X-Git-Tag: omap-for-v4.1/fixes-rc1~165^2~138^2~752
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b7d6b43b4d20cd5b8aa0e56fc1f9185837cd608a;p=pandora-kernel.git

staging: comedi: rtd520: remove unnecessary interrupt disable

The read/write of the PLX_INTRCS_REG during the driver detach is not
necessary. The rtd_reset() function writes 0 to this register which
will disable all interrupts.

This also fixes a dereference after null check reported by coverity.

Reported-by: coverity (CID 751066)
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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