For aesthetics, remove the enum and define the bits for this register.

Signed-off-by: H Hartley Sweeten <hswee...@visionengravers.com>
Cc: Ian Abbott <abbo...@mev.co.uk>
Cc: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
 drivers/staging/comedi/drivers/adv_pci1724.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/drivers/staging/comedi/drivers/adv_pci1724.c 
b/drivers/staging/comedi/drivers/adv_pci1724.c
index f8198ef..2df765f 100644
--- a/drivers/staging/comedi/drivers/adv_pci1724.c
+++ b/drivers/staging/comedi/drivers/adv_pci1724.c
@@ -74,10 +74,7 @@ supported PCI devices are configured as comedi devices 
automatically.
 #define PCI1724_EEPROM_CTRL_REG                0x08
 #define PCI1724_SYNC_TRIG_REG          0x0c  /* any value works */
 #define PCI1724_BOARD_ID_REG           0x10
-
-enum board_id_contents {
-       BOARD_ID_MASK = 0xf
-};
+#define PCI1724_BOARD_ID_MASK          (0xf << 0)
 
 static const struct comedi_lrange ao_ranges_1724 = {
        4, {
@@ -199,8 +196,9 @@ static int adv_pci1724_auto_attach(struct comedi_device 
*dev,
                return retval;
 
        dev->iobase = pci_resource_start(pcidev, 2);
-       board_id = inl(dev->iobase + PCI1724_BOARD_ID_REG) & BOARD_ID_MASK;
-       dev_info(dev->class_dev, "board id: %d\n", board_id);
+       board_id = inl(dev->iobase + PCI1724_BOARD_ID_REG);
+       dev_info(dev->class_dev, "board id: %d\n",
+                board_id & PCI1724_BOARD_ID_MASK);
 
        retval = setup_subdevices(dev);
        if (retval < 0)
-- 
2.0.3

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