staging: comedi: pcl711: tidy up the subdevice init

For aesthetic reasons, add some whitespace to the subdevice init.

The 's->len_chanlist' is only used with asynchronous command support.
Remove the unnecessary initialization of this member in the subdevices
that do not support commands. For the analog input subdevice, move
the initialization so it only occurs when commands are supported.
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/pcl711.c

@@ -496,52 +496,48 @@ static int pcl711_attach(struct comedi_device *dev, struct comedi_devconfig *it)
 	if (!devpriv)
 		return -ENOMEM;
 
+	/* Analog Input subdevice */
 	s = &dev->subdevices[0];
-	/* AI subdevice */
 	s->type		= COMEDI_SUBD_AI;
 	s->subdev_flags	= SDF_READABLE | SDF_GROUND;
 	s->n_chan	= board->n_aichan;
 	s->maxdata	= 0xfff;
-	s->len_chanlist = 1;
 	s->range_table	= board->ai_range_type;
 	s->insn_read	= pcl711_ai_insn;
 	if (dev->irq) {
 		dev->read_subdev = s;
 		s->subdev_flags	|= SDF_CMD_READ;
+		s->len_chanlist	= 1;
 		s->do_cmdtest	= pcl711_ai_cmdtest;
 		s->do_cmd	= pcl711_ai_cmd;
 	}
 
+	/* Analog Output subdevice */
 	s = &dev->subdevices[1];
-	/* AO subdevice */
 	s->type		= COMEDI_SUBD_AO;
 	s->subdev_flags	= SDF_WRITABLE;
 	s->n_chan	= board->n_aochan;
 	s->maxdata	= 0xfff;
-	s->len_chanlist = 1;
 	s->range_table	= &range_bipolar5;
 	s->insn_write	= pcl711_ao_insn;
 	s->insn_read	= pcl711_ao_insn_read;
 
+	/* Digital Input subdevice */
 	s = &dev->subdevices[2];
-	/* 16-bit digital input */
 	s->type		= COMEDI_SUBD_DI;
 	s->subdev_flags	= SDF_READABLE;
 	s->n_chan	= 16;
 	s->maxdata	= 1;
-	s->len_chanlist = 16;
 	s->range_table	= &range_digital;
 	s->insn_bits	= pcl711_di_insn_bits;
 
+	/* Digital Output subdevice */
 	s = &dev->subdevices[3];
-	/* 16-bit digital out */
 	s->type		= COMEDI_SUBD_DO;
 	s->subdev_flags	= SDF_WRITABLE;
 	s->n_chan	= 16;
 	s->maxdata	= 1;
-	s->len_chanlist = 16;
 	s->range_table	= &range_digital;
-	s->state = 0;
 	s->insn_bits	= pcl711_do_insn_bits;
 
 	/*