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 <hswee...@visionengravers.com>
Cc: Ian Abbott <abbo...@mev.co.uk>
Cc: Greg Kroah-Hartman <gre...@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
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