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staging: comedi: pcl711: use comedi_fc helpers to validate timer arg

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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>
This commit is contained in:
H Hartley Sweeten 2014-05-27 10:12:53 -07:00 committed by Greg Kroah-Hartman
parent 370936b177
commit 2eb2a5ddc3
1 changed files with 4 additions and 6 deletions
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10
drivers/staging/comedi/drivers/pcl711.c
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@ -295,8 +295,8 @@ static int pcl711_ai_cmdtest(struct comedi_device *dev,
struct comedi_subdevice *s, struct comedi_cmd *cmd)
{
struct pcl711_private *devpriv = dev->private;
int tmp;
int err = 0;
unsigned int arg;
/* Step 1 : check if triggers are trivially valid */
@ -344,14 +344,12 @@ static int pcl711_ai_cmdtest(struct comedi_device *dev,
/* step 4 */
if (cmd->scan_begin_src == TRIG_TIMER) {
tmp = cmd->scan_begin_arg;
arg = cmd->scan_begin_arg;
i8253_cascade_ns_to_timer(I8254_OSC_BASE_2MHZ,
&devpriv->divisor1,
&devpriv->divisor2,
&cmd->scan_begin_arg,
cmd->flags);
if (tmp != cmd->scan_begin_arg)
err++;
&arg, cmd->flags);
err |= cfc_check_trigger_arg_is(&cmd->scan_begin_arg, arg);
}
if (err)