staging: comedi: cb_pcimdda: remove dio_offset from the boardinfo

The 8255 device is located at a fixed offset from the base
address of the card. There is not need to carry this offset
in the boardinfo. Remove it.
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/cb_pcimdda.c

@@ -107,8 +107,6 @@ struct cb_pcimdda_board {
 	unsigned short device_id;
 	int ao_chans;
 	int ao_bits;
-	/* how many bytes into the BADR are the DIO ports */
-	int dio_offset;
 	int regs_badrindex;	/* IO Region for the control, analog output,
 				   and DIO registers */
 	int reg_sz;		/* number of bytes of registers in io region */
@@ -120,7 +118,6 @@ static const struct cb_pcimdda_board cb_pcimdda_boards[] = {
 	 .device_id = PCI_ID_PCIM_DDA06_16,
 	 .ao_chans = 6,
 	 .ao_bits = 16,
-	 .dio_offset = 12,
 	 .regs_badrindex = 3,
 	 .reg_sz = 16,
 	 }
@@ -279,7 +276,7 @@ static int cb_pcimdda_attach(struct comedi_device *dev,
 	s = dev->subdevices + 1;
 	/* digital i/o subdevice */
 	ret = subdev_8255_init(dev, s, NULL,
-			dev->iobase + thisboard->dio_offset);
+			dev->iobase + PCIMDDA_8255_BASE_REG);
 	if (ret)
 		return ret;
 	devpriv->attached_to_8255 = 1;