The digital in and digital out registers on this board share the same
address. They also effect the same digital i/o pins. To make this clear
combine the two defines.

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/ni_at_ao.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/staging/comedi/drivers/ni_at_ao.c 
b/drivers/staging/comedi/drivers/ni_at_ao.c
index b7d31f7..b10cb46 100644
--- a/drivers/staging/comedi/drivers/ni_at_ao.c
+++ b/drivers/staging/comedi/drivers/ni_at_ao.c
@@ -42,8 +42,7 @@ Configuration options:
 /*
  * Register map
  */
-#define ATAO_DIN               0x00    /* R 16 */
-#define ATAO_DOUT              0x00    /* W 16 */
+#define ATAO_DIO_REG           0x00
 #define ATAO_CFG2              0x02    /* W 16 */
 #define CALLD1                 (1 << 15)
 #define CALLD0                 (1 << 14)
@@ -228,9 +227,9 @@ static int atao_dio_insn_bits(struct comedi_device *dev,
                              unsigned int *data)
 {
        if (comedi_dio_update_state(s, data))
-               outw(s->state, dev->iobase + ATAO_DOUT);
+               outw(s->state, dev->iobase + ATAO_DIO_REG);
 
-       data[1] = inw(dev->iobase + ATAO_DIN);
+       data[1] = inw(dev->iobase + ATAO_DIO_REG);
 
        return insn->n;
 }
-- 
1.8.3.2

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