Some of the boards supported by this driver do not have differential analog
inputs. Only set the SDF_DIFF subdev_flag when the board supports 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/me4000.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/staging/comedi/drivers/me4000.c
b/drivers/staging/comedi/drivers/me4000.c
index 3d45217..171749b 100644
--- a/drivers/staging/comedi/drivers/me4000.c
+++ b/drivers/staging/comedi/drivers/me4000.c
@@ -1284,7 +1284,9 @@ static int me4000_auto_attach(struct comedi_device *dev,
/* Analog Input subdevice */
s = &dev->subdevices[0];
s->type = COMEDI_SUBD_AI;
- s->subdev_flags = SDF_READABLE | SDF_COMMON | SDF_GROUND | SDF_DIFF;
+ s->subdev_flags = SDF_READABLE | SDF_COMMON | SDF_GROUND;
+ if (board->ai_diff_nchan)
+ s->subdev_flags |= SDF_DIFF;
s->n_chan = board->ai_nchan;
s->maxdata = 0xffff;
s->len_chanlist = ME4000_AI_CHANNEL_LIST_COUNT;
--
2.4.3
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