This member of the private data is only used during the attach to
determine if there are 8 differential or 16 single-ended analog
inputs. Remove the member and use the comedi_devconfig option
directly.
Also, fix the subdev_flags when differential analog inputs are used.
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 | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/drivers/staging/comedi/drivers/adq12b.c
b/drivers/staging/comedi/drivers/adq12b.c
index 40e91d7..6700320 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 differential; /* option 3 of comedi_config */
unsigned int last_ctreg;
};
@@ -217,7 +216,6 @@ static int adq12b_attach(struct comedi_device *dev, struct
comedi_devconfig *it)
if (!devpriv)
return -ENOMEM;
- devpriv->differential = it->options[2];
devpriv->last_ctreg = -1; /* force ctreg update */
ret = comedi_alloc_subdevices(dev, 3);
@@ -227,8 +225,8 @@ static int adq12b_attach(struct comedi_device *dev, struct
comedi_devconfig *it)
s = &dev->subdevices[0];
/* analog input subdevice */
s->type = COMEDI_SUBD_AI;
- if (devpriv->differential) {
- s->subdev_flags = SDF_READABLE | SDF_GROUND | SDF_DIFF;
+ if (it->options[2]) {
+ s->subdev_flags = SDF_READABLE | SDF_DIFF;
s->n_chan = 8;
} else {
s->subdev_flags = SDF_READABLE | SDF_GROUND;
--
1.9.2
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