[PATCH 15/24] staging: comedi: ni_pcidio: use comedi_fc helpers to validate timer arg

H Hartley Sweeten hsweeten at visionengravers.com
Mon May 5 16:59:54 UTC 2014


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 at visionengravers.com>
Cc: Ian Abbott <abbotti at mev.co.uk>
Cc: Greg Kroah-Hartman <gregkh at linuxfoundation.org>
---
 drivers/staging/comedi/drivers/ni_pcidio.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/drivers/staging/comedi/drivers/ni_pcidio.c b/drivers/staging/comedi/drivers/ni_pcidio.c
index 962c235..df0c942 100644
--- 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)
-- 
1.9.2



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