[PATCH 37/38] staging: comedi: usbduxfast: remove unreachable code in usbduxfast_ai_cmd()

[H Hartley Sweeten]

The (*do_cmdtest) validates that the 'stop_arg' is >= 1 for a 'stop_src'
of TRIG_COUNT and the 'scan_end_arg' is validated to be the 'chanlist_len'
which will always be >= 1. Remove the unreachable error code for an
'ai_sample_count < 1'.

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/usbduxfast.c | 13 +++----------
 1 file changed, 3 insertions(+), 10 deletions(-)

diff --git a/drivers/staging/comedi/drivers/usbduxfast.c b/drivers/staging/comedi/drivers/usbduxfast.c
index 376d146..85f9dcf 100644
--- a/drivers/staging/comedi/drivers/usbduxfast.c
+++ b/drivers/staging/comedi/drivers/usbduxfast.c
@@ -809,18 +809,11 @@ static int usbduxfast_ai_cmd(struct comedi_device *dev,
 		up(&devpriv->sem);
 		return result;
 	}
-	if (cmd->stop_src == TRIG_COUNT) {
+
+	if (cmd->stop_src == TRIG_COUNT)
 		devpriv->ai_sample_count = cmd->stop_arg * cmd->scan_end_arg;
-		if (devpriv->ai_sample_count < 1) {
-			dev_err(dev->class_dev,
-				"(cmd->stop_arg)*(cmd->scan_end_arg)<1, aborting\n");
-			up(&devpriv->sem);
-			return -EFAULT;
-		}
-	} else {
-		/* continous acquisition */
+	else	/* TRIG_NONE */
 		devpriv->ai_sample_count = 0;
-	}
 
 	if ((cmd->start_src == TRIG_NOW) || (cmd->start_src == TRIG_EXT)) {
 		/* enable this acquisition operation */
-- 
1.9.2