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

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This driver supportes cmd->start_src sources of TRIG_NOW, TRIG_INT, TRIG_OTHER,
and TRIG_EXT. Refactor the (*do_cmdtest) to clarify the trivial validation of
the cmd->start_arg. For a 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>

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H Hartley Sweeten 2014-04-17 10:08:03 -07:00 • committed by Greg Kroah-Hartman

parent e702c66c07

commit 6a760394d7

1 changed files with 14 additions and 4 deletions

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drivers/staging/comedi/drivers/ni_tiocmd.c

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