staging: comedi: quatech_daqp_cs: cleanup subdevice init

Remove the dev_info() board attach noise.

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

Remove the init of the s->len_chanlist for the subdevices that do
not support commands. It's not used by them and the comedi core
will handle initializing it properly in the postconfig.

Change the return after a successful attach to "0". The comedi
core expects a < 0 value to indicate an error and "0" is the
typical value returned to indicate success.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/comedi/drivers/quatech_daqp_cs.c

@@ -767,9 +767,6 @@ static int daqp_attach(struct comedi_device *dev, struct comedi_devconfig *it)
 	if (ret)
 		return ret;
 
-	dev_info(dev->class_dev, "attaching daqp%d (io 0x%04lx)\n",
-		 it->options[0], dev->iobase);
-
 	s = &dev->subdevices[0];
 	dev->read_subdev = s;
 	s->private	= local;
@@ -790,7 +787,6 @@ static int daqp_attach(struct comedi_device *dev, struct comedi_devconfig *it)
 	s->type		= COMEDI_SUBD_AO;
 	s->subdev_flags	= SDF_WRITEABLE;
 	s->n_chan	= 2;
-	s->len_chanlist = 1;
 	s->maxdata	= 0x0fff;
 	s->range_table	= &range_bipolar5;
 	s->insn_write	= daqp_ao_insn_write;
@@ -800,7 +796,6 @@ static int daqp_attach(struct comedi_device *dev, struct comedi_devconfig *it)
 	s->type		= COMEDI_SUBD_DI;
 	s->subdev_flags	= SDF_READABLE;
 	s->n_chan	= 1;
-	s->len_chanlist = 1;
 	s->insn_read	= daqp_di_insn_read;
 
 	s = &dev->subdevices[3];
@@ -811,7 +806,7 @@ static int daqp_attach(struct comedi_device *dev, struct comedi_devconfig *it)
 	s->len_chanlist	= 1;
 	s->insn_write	= daqp_do_insn_write;
 
-	return 1;
+	return 0;
 }
 
 static void daqp_detach(struct comedi_device *dev)