staging: comedi: acl7225b: cleanup acl7225b_di_insn_bits()

Use a local variable to hold the base register, 'reg', that is used
to read from the device.

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>

diff --git a/drivers/staging/comedi/drivers/acl7225b.c b/drivers/staging/comedi/drivers/acl7225b.c
index 80cfa817dd45e6ce23e3068b5b069c81c996ed76..5afadce5a2484885da735b7f3e54cb56f95b7ab3 100644 (file)
--- a/drivers/staging/comedi/drivers/acl7225b.c
+++ b/drivers/staging/comedi/drivers/acl7225b.c
@@ -64,8 +64,10 @@ static int acl7225b_di_insn_bits(struct comedi_device *dev,
                                 struct comedi_insn *insn,
                                 unsigned int *data)
 {
-       data[1] = inb(dev->iobase + (unsigned long)s->private) |
-           (inb(dev->iobase + (unsigned long)s->private + 1) << 8);
+       unsigned long reg = (unsigned long)s->private;
+
+       data[1] = inb(dev->iobase + reg) |
+                 (inb(dev->iobase + reg + 1) << 8);
 
        return insn->n;
 }