Make sure to check that the 'ao_timer' value is valid for both the
high speed and low speed cases in usbduxsigma_ao_cmdtest().

Signed-off-by: H Hartley Sweeten <[email protected]>
Cc: Ian Abbott <[email protected]>
Cc: Greg Kroah-Hartman <[email protected]>
---
 drivers/staging/comedi/drivers/usbduxsigma.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/comedi/drivers/usbduxsigma.c 
b/drivers/staging/comedi/drivers/usbduxsigma.c
index ed5085a7..aa0090c 100644
--- a/drivers/staging/comedi/drivers/usbduxsigma.c
+++ b/drivers/staging/comedi/drivers/usbduxsigma.c
@@ -994,9 +994,9 @@ static int usbduxsigma_ao_cmdtest(struct comedi_device *dev,
                 * we get all channels at once
                 */
                devpriv->ao_timer = cmd->scan_begin_arg / 1000000;
-               if (devpriv->ao_timer < 1)
-                       err |= -EINVAL;
        }
+       if (devpriv->ao_timer < 1)
+               err |= -EINVAL;
 
        if (cmd->stop_src == TRIG_COUNT) {
                /* not continuous, use counter */
-- 
1.8.1.4

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