From: Ian Abbott <abbotti@mev.co.uk>
Date: Thu, 26 Sep 2013 09:16:37 +0000 (+0100)
Subject: staging: comedi: pcl711: add AI cancel handler
X-Git-Tag: omap-for-v3.13/fixes-for-merge-window-take2~62^2~566
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b7ea391cc4edf5ebb62d6341285ac5da342213f4;p=pandora-kernel.git

staging: comedi: pcl711: add AI cancel handler

Comedi subdevices that support asynchronous commands should have a
'cancel' handler to stop an in-progress command.  Add such a handler to
the pcl711 driver module.  I think merely setting the acquisition mode
to "software-triggered" would be sufficient, but also clear the
interrupt status for good luck.

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