staging: comedi: ni_6527: 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/ni_6527.c b/drivers/staging/comedi/drivers/ni_6527.c
index a80c52fb273145b518f1e5345fe0eb1c5fb56762..cfebd0bebf13c71f12312ce205e5044b895cf745 100644 (file)
--- a/drivers/staging/comedi/drivers/ni_6527.c
+++ b/drivers/staging/comedi/drivers/ni_6527.c
@@ -212,7 +212,7 @@ static int ni6527_do_insn_bits(struct comedi_device *dev,
 static irqreturn_t ni6527_interrupt(int irq, void *d)
 {
        struct comedi_device *dev = d;
-       struct comedi_subdevice *s = dev->subdevices + 2;
+       struct comedi_subdevice *s = &dev->subdevices[2];
        unsigned int status;
 
        status = readb(devpriv->mite->daq_io_addr + Change_Status);
@@ -393,7 +393,7 @@ static int ni6527_attach(struct comedi_device *dev, struct comedi_devconfig *it)
        if (ret)
                return ret;
 
-       s = dev->subdevices + 0;
+       s = &dev->subdevices[0];
        s->type = COMEDI_SUBD_DI;
        s->subdev_flags = SDF_READABLE;
        s->n_chan = 24;
@@ -402,7 +402,7 @@ static int ni6527_attach(struct comedi_device *dev, struct comedi_devconfig *it)
        s->insn_config = ni6527_di_insn_config;
        s->insn_bits = ni6527_di_insn_bits;
 
-       s = dev->subdevices + 1;
+       s = &dev->subdevices[1];
        s->type = COMEDI_SUBD_DO;
        s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
        s->n_chan = 24;
@@ -410,7 +410,7 @@ static int ni6527_attach(struct comedi_device *dev, struct comedi_devconfig *it)
        s->maxdata = 1;
        s->insn_bits = ni6527_do_insn_bits;
 
-       s = dev->subdevices + 2;
+       s = &dev->subdevices[2];
        dev->read_subdev = s;
        s->type = COMEDI_SUBD_DI;
        s->subdev_flags = SDF_READABLE | SDF_CMD_READ;