staging: comedi: cb_pcimdas: tidy up cb_pcimdas_auto_attach()

For aesthetics, add some whitespace to the subdevice init.

Remove the unnecessary comments as well as the initialization of the
analog input subdevice 'len_chanlist'. That member is only used by
subdevices that support async commands.

For aesthetics, rename the analog input subdevice (*insn_read) function.
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/cb_pcimdas.c

@@ -175,9 +175,10 @@ static int cb_pcimdas_ai_eoc(struct comedi_device *dev,
 	return -EBUSY;
 }
 
-static int cb_pcimdas_ai_rinsn(struct comedi_device *dev,
+static int cb_pcimdas_ai_insn_read(struct comedi_device *dev,
 				   struct comedi_subdevice *s,
-			       struct comedi_insn *insn, unsigned int *data)
+				   struct comedi_insn *insn,
+				   unsigned int *data)
 {
 	struct cb_pcimdas_private *devpriv = dev->private;
 	unsigned int chan = CR_CHAN(insn->chanspec);
@@ -294,9 +295,8 @@ static int cb_pcimdas_auto_attach(struct comedi_device *dev,
 	if (ret)
 		return ret;
 
+	/* Analog Input subdevice */
 	s = &dev->subdevices[0];
-	/* dev->read_subdev=s; */
-	/*  analog input subdevice */
 	s->type		= COMEDI_SUBD_AI;
 	s->subdev_flags	= SDF_READABLE;
 	if (cb_pcimdas_is_ai_se(dev)) {
@@ -309,12 +309,10 @@ static int cb_pcimdas_auto_attach(struct comedi_device *dev,
 	s->maxdata	= 0xffff;
 	s->range_table	= cb_pcimdas_is_ai_uni(dev) ? &cb_pcimdas_ai_uni_range
 						    : &cb_pcimdas_ai_bip_range;
-	s->len_chanlist = 1;	/*  This is the maximum chanlist length that */
-	/*  the board can handle */
-	s->insn_read = cb_pcimdas_ai_rinsn;
+	s->insn_read	= cb_pcimdas_ai_insn_read;
 
+	/* Analog Output subdevice */
 	s = &dev->subdevices[1];
-	/*  analog output subdevice */
 	s->type		= COMEDI_SUBD_AO;
 	s->subdev_flags	= SDF_WRITABLE;
 	s->n_chan	= 2;
@@ -326,8 +324,8 @@ static int cb_pcimdas_auto_attach(struct comedi_device *dev,
 	if (ret)
 		return ret;
 
+	/* Digital I/O subdevice */
 	s = &dev->subdevices[2];
-	/* digital i/o subdevice */
 	ret = subdev_8255_init(dev, s, NULL, PCIMDAS_8255_BASE);
 	if (ret)
 		return ret;