staging: comedi: addi_apci_3xxx: tidy up the digital in and out subdevice init

For aesthetic reasons, add some whitespace to the initialization of the
digital input and output subdevices.

Fix the subdev_flags for both subdevices. The SDF_GROUND and SDF_COMMON
flags only apply to analog subdevices. Digital output subdevices do not
need the SDF_READABLE flag set.

Remove the initialization of s->io_bits. It only has meaning for
COMEDI_SUBD_DIO subdevices.
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_apci_3xxx.c

@@ -565,29 +565,28 @@ static int apci3xxx_auto_attach(struct comedi_device *dev,
 	} else {
 		s->type = COMEDI_SUBD_UNUSED;
 	}
-	/*  Allocate and Initialise DI Subdevice Structures */
+
+	/* Digital Input subdevice */
 	s = &dev->subdevices[2];
 	if (board->has_dig_in) {
 		s->type		= COMEDI_SUBD_DI;
-		s->subdev_flags = SDF_READABLE | SDF_GROUND | SDF_COMMON;
+		s->subdev_flags	= SDF_READABLE;
 		s->n_chan	= 4;
 		s->maxdata	= 1;
 		s->range_table	= &range_digital;
-		s->io_bits = 0;	/* all bits input */
 		s->insn_bits	= apci3xxx_di_insn_bits;
 	} else {
 		s->type		= COMEDI_SUBD_UNUSED;
 	}
-	/*  Allocate and Initialise DO Subdevice Structures */
+
+	/* Digital Output subdevice */
 	s = &dev->subdevices[3];
 	if (board->has_dig_out) {
 		s->type		= COMEDI_SUBD_DO;
-		s->subdev_flags =
-			SDF_READABLE | SDF_WRITEABLE | SDF_GROUND | SDF_COMMON;
+		s->subdev_flags	= SDF_WRITEABLE;
 		s->n_chan	= 4;
 		s->maxdata	= 1;
 		s->range_table	= &range_digital;
-		s->io_bits = 0xf;	/* all bits output */
 		s->insn_bits	= apci3xxx_do_insn_bits;
 	} else {
 		s->type		= COMEDI_SUBD_UNUSED;