This member of the private data is only used during the attach to
determine which range table to use for the analog inputs. Remove
the member and use the comedi_devconfig option directly.

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/adq12b.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/drivers/staging/comedi/drivers/adq12b.c 
b/drivers/staging/comedi/drivers/adq12b.c
index 4a0bbd7..40e91d7 100644
--- a/drivers/staging/comedi/drivers/adq12b.c
+++ b/drivers/staging/comedi/drivers/adq12b.c
@@ -114,7 +114,6 @@ static const struct comedi_lrange range_adq12b_ai_unipolar 
= {
 };
 
 struct adq12b_private {
-       int unipolar;           /* option 2 of comedi_config (1 is iobase) */
        int differential;       /* option 3 of comedi_config */
        unsigned int last_ctreg;
 };
@@ -218,7 +217,6 @@ static int adq12b_attach(struct comedi_device *dev, struct 
comedi_devconfig *it)
        if (!devpriv)
                return -ENOMEM;
 
-       devpriv->unipolar = it->options[1];
        devpriv->differential = it->options[2];
        devpriv->last_ctreg = -1;       /* force ctreg update */
 
@@ -237,10 +235,8 @@ static int adq12b_attach(struct comedi_device *dev, struct 
comedi_devconfig *it)
                s->n_chan = 16;
        }
 
-       if (devpriv->unipolar)
-               s->range_table = &range_adq12b_ai_unipolar;
-       else
-               s->range_table = &range_adq12b_ai_bipolar;
+       s->range_table = it->options[1] ? &range_adq12b_ai_unipolar
+                                       : &range_adq12b_ai_bipolar;
 
        s->maxdata = 0xfff;
 
-- 
1.9.2

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