staging: comedi: usbdux: use comedi_buf_write_samples()

Use comedi_buf_write_samples() to add the sample to the async buffer.

The async events COMEDI_CB_BLOCK and COMEDI_CB_EOS will be detected and set
by the core. Remove the unnecessary events in the driver.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/comedi/drivers/usbdux.c

@@ -282,10 +282,9 @@ static void usbduxsub_ai_handle_urb(struct comedi_device *dev,
 				val ^= ((s->maxdata + 1) >> 1);
 
 			/* transfer data */
-			if (!comedi_buf_put(s, val))
+			if (!comedi_buf_write_samples(s, &val, 1))
 				return;
 		}
-		async->events |= COMEDI_CB_BLOCK | COMEDI_CB_EOS;
 	}
 
 	/* if command is still running, resubmit urb */