staging: comedi: usbduxfast: tidy up usbduxfast_ai_cancel()

Remove the unnecessary comments and dev_err() noise.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/comedi/drivers/usbduxfast.c b/drivers/staging/comedi/drivers/usbduxfast.c
index dd4f177a9840a4c0823ae26ca5c177a4162ca3d1..9120df79d7036a87ededf47180696bcd217ee434 100644 (file)
--- a/drivers/staging/comedi/drivers/usbduxfast.c
+++ b/drivers/staging/comedi/drivers/usbduxfast.c
@@ -200,23 +200,16 @@ static int usbduxfast_ai_stop(struct comedi_device *dev, int do_unlink)
        return 0;
 }
 
-/*
- * This will cancel a running acquisition operation.
- * This is called by comedi but never from inside the driver.
- */
 static int usbduxfast_ai_cancel(struct comedi_device *dev,
                                struct comedi_subdevice *s)
 {
        struct usbduxfast_private *devpriv = dev->private;
        int ret;
 
-       /* force unlink of all urbs */
-       if (!devpriv) {
-               dev_err(dev->class_dev, "%s: devpriv=NULL\n", __func__);
+       if (!devpriv)
                return -EFAULT;
-       }
+
        down(&devpriv->sem);
-       /* unlink */
        ret = usbduxfast_ai_stop(dev, 1);
        up(&devpriv->sem);