staging: comedi: amplc_pc236: remove subdevice pointer math

Convert the comedi_subdevice access from pointer math to array
access.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/comedi/drivers/amplc_pc236.c b/drivers/staging/comedi/drivers/amplc_pc236.c
index 52f7575..a957cd8 100644 (file)
--- a/drivers/staging/comedi/drivers/amplc_pc236.c
+++ b/drivers/staging/comedi/drivers/amplc_pc236.c
@@ -412,7 +412,7 @@ static int pc236_intr_cancel(struct comedi_device *dev,
 static irqreturn_t pc236_interrupt(int irq, void *d)
 {
        struct comedi_device *dev = d;
-       struct comedi_subdevice *s = dev->subdevices + 1;
+       struct comedi_subdevice *s = &dev->subdevices[1];
        int handled;
 
        handled = pc236_intr_check(dev);
@@ -464,14 +464,14 @@ static int pc236_common_attach(struct comedi_device *dev, unsigned long iobase,
        if (ret)
                return ret;
 
-       s = dev->subdevices + 0;
+       s = &dev->subdevices[0];
        /* digital i/o subdevice (8255) */
        ret = subdev_8255_init(dev, s, NULL, iobase);
        if (ret < 0) {
                dev_err(dev->class_dev, "error! out of memory!\n");
                return ret;
        }
-       s = dev->subdevices + 1;
+       s = &dev->subdevices[1];
        dev->read_subdev = s;
        s->type = COMEDI_SUBD_UNUSED;
        pc236_intr_disable(dev);
@@ -598,7 +598,7 @@ static void pc236_detach(struct comedi_device *dev)
        if (dev->irq)
                free_irq(dev->irq, dev);
        if (dev->subdevices)
-               subdev_8255_cleanup(dev, dev->subdevices + 0);
+               subdev_8255_cleanup(dev, &dev->subdevices[0]);
        if (is_isa_board(thisboard)) {
                if (dev->iobase)
                        release_region(dev->iobase, PC236_IO_SIZE);