staging: comedi: hwdrv_apci1564: tidy up apci1564_counter_insn_write()

Clear the gate and trig bits in the common code path.
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/addi-data/hwdrv_apci1564.c

@@ -147,16 +147,15 @@ static int apci1564_counter_insn_write(struct comedi_device *dev,
 	unsigned int ctrl;
 
 	ctrl = inl(iobase + ADDI_TCW_CTRL_REG);
+	ctrl &= ~(ADDI_TCW_CTRL_GATE | ADDI_TCW_CTRL_TRIG);
 	switch (data[1]) {
 	case 0:	/* Stops the Counter subdevice */
 		ctrl = 0;
 		break;
 	case 1:	/* Start the Counter subdevice */
-		ctrl &= ~(ADDI_TCW_CTRL_GATE | ADDI_TCW_CTRL_TRIG);
 		ctrl |= ADDI_TCW_CTRL_ENA;
 		break;
 	case 2:	/* Clears the Counter subdevice */
-		ctrl &= ~(ADDI_TCW_CTRL_GATE | ADDI_TCW_CTRL_TRIG);
 		ctrl |= ADDI_TCW_CTRL_GATE;
 		break;
 	}