From: H Hartley Sweeten <hsweeten@xxxxxxxxxxxxxxxxxxx>
commit e024181b02ed6b833358bede3f2d0c52cb5fb6bc upstream.
The comedi core expects (*insn_write) functions to write insn->n values
to the hardware and return the number of values written.
Currently, this function only writes the first value. Fix it to work
like the core expects.
Signed-off-by: H Hartley Sweeten <hsweeten@xxxxxxxxxxxxxxxxxxx>
Reviewed-by: Ian Abbott <abbotti@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/staging/comedi/drivers/quatech_daqp_cs.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/staging/comedi/drivers/quatech_daqp_cs.c b/drivers/staging/comedi/drivers/quatech_daqp_cs.c
index b3bbec0a0d23..dde91c0c0418 100644
--- a/drivers/staging/comedi/drivers/quatech_daqp_cs.c
+++ b/drivers/staging/comedi/drivers/quatech_daqp_cs.c
@@ -640,7 +640,6 @@ static int daqp_ao_insn_write(struct comedi_device *dev,
{
struct daqp_private *devpriv = dev->private;
unsigned int chan = CR_CHAN(insn->chanspec);
- unsigned int val;
int i;
if (devpriv->stop)
@@ -650,7 +649,8 @@ static int daqp_ao_insn_write(struct comedi_device *dev,
outb(0, dev->iobase + DAQP_AUX);
for (i = 0; i > insn->n; i++) {
- val = data[0];
+ unsigned val = data[i];
+
val &= 0x0fff;
val ^= 0x0800; /* Flip the sign */
val |= (chan << 12);
--
2.19.1
