From: H Hartley Sweeten <hsweeten@visionengravers.com>
Date: Thu, 17 Apr 2014 17:08:07 +0000 (-0700)
Subject: staging: comedi: s626: clarify the cmd->start_arg validation and use
X-Git-Tag: omap-for-v3.16/fixes-against-rc1~39^2~36^2~1319
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=478da5c9ad51c48653b395b64d4c62a616dfb872;p=pandora-kernel.git

staging: comedi: s626: clarify the cmd->start_arg validation and use

This driver supports a cmd->start_src of TRIG_NOW, TRIG_INT or TRIG_EXT.

Clarify the cmd->start_arg validation in Step 3 of the (*do_cmdtest).

For a TRIG_INT source, the cmd->start_arg is actually the valid
trig_num that is used by the async (*inttrig) callback.

Refactor the (*inttrig) function so that the cmd->start_arg is used
to check the trig_num instead of the open coded value.

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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