staging: comedi: dmm32at: use comedi_buf_write_samples()

For aesthetics, use comedi_buf_write_samples() to add the sample to the
async buffer.
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/dmm32at.c

@@ -501,7 +501,7 @@ static irqreturn_t dmm32at_isr(int irq, void *d)
 
 			/* invert sign bit to make range unsigned */
 			samp = ((msb ^ 0x0080) << 8) + lsb;
-			comedi_buf_put(s, samp);
+			comedi_buf_write_samples(s, &samp, 1);
 		}
 
 		if (devpriv->ai_scans_left != 0xffffffff) {	/* TRIG_COUNT */