staging: comedi: cb_pcidas: fix the ao cmd->start_arg use for TRIG_INT
authorH Hartley Sweeten <hsweeten@visionengravers.com>
Thu, 17 Apr 2014 17:07:57 +0000 (10:07 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Tue, 22 Apr 2014 17:21:31 +0000 (10:21 -0700)
commit384e483fb9d487bb318acc7098f61d3feffa4d79
tree7a49c60939ba12e63b498a05f6611a1180c1c303
parent96997b0efa8b82162f78a294669de44320a8c87f
staging: comedi: cb_pcidas: fix the ao cmd->start_arg use for TRIG_INT

This driver only supports a cmd->start_src of TRIG_INT for ai commands. The
cmd->start_arg is trivially validated to be 0. For TRIG_INT source, the
cmd->start_arg is actually the valid trig_num that is passed to 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>
drivers/staging/comedi/drivers/cb_pcidas.c