This bit is called DAC2S not DACS in the user manual. Fix it.

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 | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/comedi/drivers/ni_at_ao.c 
b/drivers/staging/comedi/drivers/ni_at_ao.c
index e483c7e..33b5f68 100644
--- a/drivers/staging/comedi/drivers/ni_at_ao.c
+++ b/drivers/staging/comedi/drivers/ni_at_ao.c
@@ -48,7 +48,7 @@
 #define ATAO_CFG2_CALLD_NOP    (0 << 14)
 #define ATAO_CFG2_CALLD(x)     ((((x) >> 3) + 1) << 14)
 #define ATAO_CFG2_FFRTEN       (1 << 13)
-#define ATAO_CFG2_DACS(x)      (1 << (((x) / 2) + 8))
+#define ATAO_CFG2_DAC2S(x)     (1 << (((x) / 2) + 8))
 #define ATAO_CFG2_LDAC(x)      (1 << (((x) / 2) + 3))
 #define ATAO_CFG2_PROMEN       (1 << 2)
 #define ATAO_CFG2_SCLK         (1 << 1)
@@ -172,7 +172,7 @@ static int atao_ao_insn_write(struct comedi_device *dev,
 
        /* enable straight binary format for unipolar ranges */
        if (comedi_range_is_unipolar(s, range))
-               outw(ATAO_CFG2_DACS(chan), dev->iobase + ATAO_CFG2_REG);
+               outw(ATAO_CFG2_DAC2S(chan), dev->iobase + ATAO_CFG2_REG);
 
        if (chan == 0)
                atao_select_reg_group(dev, 1);
-- 
1.8.3.2

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