From a7d3de75cf00574f8d360d51d0e1beb3c561cc89 Mon Sep 17 00:00:00 2001
From: H Hartley Sweeten <hsweeten@visionengravers.com>
Date: Thu, 30 Oct 2014 11:21:54 -0700
Subject: [PATCH] staging: comedi: drivers do not need to reset the
 async->cur_chan

The comedi core calls comedi_buf_reset() before starting an async command
(*do_cmd) and after returning a subdevice to an idle state (*cancel).

The drivers do not need to reset the async->cur_chan in those functions.

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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