staging: comedi: ni_pcidio: use comedi_fc helpers to validate timer arg

Use the comedi_fc helper cfc_check_trigger_arg_is() to validate the
trigger argument when the source is TRIG_TIMER.

All the arguments are unsigned int, change the local variable to an
unsigned int and rename it for aesthetic reasons.

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>

diff --git a/drivers/staging/comedi/drivers/ni_pcidio.c b/drivers/staging/comedi/drivers/ni_pcidio.c
index 14aaa58bbc9db3e838887ba108cb02682309c725..5fc74d6ff6af55a822b8f59f734d4148d5d584f8 100644 (file)
--- a/drivers/staging/comedi/drivers/ni_pcidio.c
+++ b/drivers/staging/comedi/drivers/ni_pcidio.c
@@ -536,7 +536,7 @@ static int ni_pcidio_cmdtest(struct comedi_device *dev,
                             struct comedi_subdevice *s, struct comedi_cmd *cmd)
 {
        int err = 0;
-       int tmp;
+       unsigned int arg;
 
        /* Step 1 : check if triggers are trivially valid */
 
@@ -595,11 +595,9 @@ static int ni_pcidio_cmdtest(struct comedi_device *dev,
        /* step 4: fix up any arguments */
 
        if (cmd->scan_begin_src == TRIG_TIMER) {
-               tmp = cmd->scan_begin_arg;
-               ni_pcidio_ns_to_timer(&cmd->scan_begin_arg,
-                                     cmd->flags & TRIG_ROUND_MASK);
-               if (tmp != cmd->scan_begin_arg)
-                       err++;
+               arg = cmd->scan_begin_arg;
+               ni_pcidio_ns_to_timer(&arg, cmd->flags & TRIG_ROUND_MASK);
+               err |= cfc_check_trigger_arg_is(&cmd->scan_begin_arg, arg);
        }
 
        if (err)