staging: comedi: ni_labpc: tidy up labpc_8255_mmio()

The 8255 driver (*io) callback now includes the comedi_device pointer.

Instead of passing the (cast) pointer to subdev_8255_init(), pass the
'iobase' of the 8255 registers (DIO_BASE_REG).

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>

diff --git a/drivers/staging/comedi/drivers/ni_labpc.c b/drivers/staging/comedi/drivers/ni_labpc.c
index fa108b9dd603a37f5cae0d14dbed513c56b4ea32..15ead27159260e3c4e9ec1bcdde4d76ef5601b4d 100644 (file)
--- a/drivers/staging/comedi/drivers/ni_labpc.c
+++ b/drivers/staging/comedi/drivers/ni_labpc.c
@@ -1035,17 +1035,15 @@ static int labpc_ao_insn_read(struct comedi_device *dev,
        return 1;
 }
 
-static int labpc_8255_mmio(struct comedi_device *cdev,
-                          int dir, int port, int data, unsigned long arg)
+static int labpc_8255_mmio(struct comedi_device *dev,
+                          int dir, int port, int data, unsigned long iobase)
 {
-       struct comedi_device *dev = (struct comedi_device *)arg;
-
        if (dir) {
-               writeb(data, dev->mmio + DIO_BASE_REG + port);
+               writeb(data, dev->mmio + iobase + port);
                return 0;
        }
 
-       return readb(dev->mmio + DIO_BASE_REG + port);
+       return readb(dev->mmio + iobase + port);
 }
 
 /* lowlevel write to eeprom/dac */
@@ -1405,7 +1403,7 @@ int labpc_common_attach(struct comedi_device *dev,
        s = &dev->subdevices[2];
        if (dev->mmio) {
                ret = subdev_8255_init(dev, s, labpc_8255_mmio,
-                                      (unsigned long)dev);
+                                      DIO_BASE_REG);
        } else {
                ret = subdev_8255_init(dev, s, NULL,
                                       dev->iobase + DIO_BASE_REG);