staging: comedi: pcl812: all board types have analog inputs

All the boards supported by this driver have 16 or 32 analog input
channels.

Remove the unnecessary check in pcl812_attach() to reduce the indent
level of the code.
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/pcl812.c

@@ -1422,9 +1422,7 @@ static int pcl812_attach(struct comedi_device *dev, struct comedi_devconfig *it)
 		devpriv->hwdmasize[1] = PAGE_SIZE * (1 << pages);
 	}
 
-	n_subdevices = 0;
-	if (board->n_aichan > 0)
-		n_subdevices++;
+	n_subdevices = 1;		/* all boardtypes have analog inputs */
 	if (board->n_aochan > 0)
 		n_subdevices++;
 	if (board->has_dio)
@@ -1436,8 +1434,7 @@ static int pcl812_attach(struct comedi_device *dev, struct comedi_devconfig *it)
 
 	subdev = 0;
 
-	/* analog input */
-	if (board->n_aichan > 0) {
+	/* Analog Input subdevice */
 	s = &dev->subdevices[subdev];
 	s->type		= COMEDI_SUBD_AI;
 	s->subdev_flags	= SDF_READABLE;
@@ -1477,7 +1474,6 @@ static int pcl812_attach(struct comedi_device *dev, struct comedi_devconfig *it)
 	else
 		s->insn_read	= pcl812_ai_insn_read;
 
-		devpriv->use_MPC = board->has_mpc508_mux;
 	if (dev->irq) {
 		dev->read_subdev = s;
 		s->subdev_flags	|= SDF_CMD_READ;
@@ -1487,8 +1483,10 @@ static int pcl812_attach(struct comedi_device *dev, struct comedi_devconfig *it)
 		s->poll		= pcl812_ai_poll;
 		s->cancel	= pcl812_ai_cancel;
 	}
+
+	devpriv->use_MPC = board->has_mpc508_mux;
+
 	subdev++;
-	}
 
 	/* analog output */
 	if (board->n_aochan > 0) {