The comedi core expects (*insn_read) functions to return insn->n
data smaples. Fix this function to work like the core expects.
Signed-off-by: H Hartley Sweeten <hsweeten@xxxxxxxxxxxxxxxxxxx>
Cc: Ian Abbott <abbotti@xxxxxxxxx>
Cc: Greg Kroah-Hartman <gregk@xxxxxxxxxxxxxxxxxxx>
---
drivers/staging/comedi/drivers/ni_mio_common.c | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)
diff --git a/drivers/staging/comedi/drivers/ni_mio_common.c b/drivers/staging/comedi/drivers/ni_mio_common.c
index 1718382..f4125c0 100644
--- a/drivers/staging/comedi/drivers/ni_mio_common.c
+++ b/drivers/staging/comedi/drivers/ni_mio_common.c
@@ -2939,14 +2939,18 @@ static int ni_ao_config_chanlist(struct comedi_device *dev,
}
static int ni_ao_insn_read(struct comedi_device *dev,
- struct comedi_subdevice *s, struct comedi_insn *insn,
+ struct comedi_subdevice *s,
+ struct comedi_insn *insn,
unsigned int *data)
{
struct ni_private *devpriv = dev->private;
+ unsigned int chan = CR_CHAN(insn->chanspec);
+ int i;
- data[0] = devpriv->ao[CR_CHAN(insn->chanspec)];
+ for (i = 0; i < insn->n; i++)
+ data[i] = devpriv->ao[chan];
- return 1;
+ return insn->n;
}
static int ni_ao_insn_write(struct comedi_device *dev,
--
1.9.3
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