Only hook up the analog input command support if the interrupt is
available.
Signed-off-by: H Hartley Sweeten <hsweeten@xxxxxxxxxxxxxxxxxxx>
Cc: Ian Abbott <abbotti@xxxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/staging/comedi/drivers/s626.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
diff --git a/drivers/staging/comedi/drivers/s626.c b/drivers/staging/comedi/drivers/s626.c
index 4faa659..9ff113b 100644
--- a/drivers/staging/comedi/drivers/s626.c
+++ b/drivers/staging/comedi/drivers/s626.c
@@ -2641,7 +2641,6 @@ static int s626_auto_attach(struct comedi_device *dev,
s = &dev->subdevices[0];
/* analog input subdevice */
- dev->read_subdev = s;
s->type = COMEDI_SUBD_AI;
s->subdev_flags = SDF_READABLE | SDF_DIFF | SDF_CMD_READ;
s->n_chan = S626_ADC_CHANNELS;
@@ -2649,9 +2648,12 @@ static int s626_auto_attach(struct comedi_device *dev,
s->range_table = &s626_range_table;
s->len_chanlist = S626_ADC_CHANNELS;
s->insn_read = s626_ai_insn_read;
- s->do_cmd = s626_ai_cmd;
- s->do_cmdtest = s626_ai_cmdtest;
- s->cancel = s626_ai_cancel;
+ if (dev->irq) {
+ dev->read_subdev = s;
+ s->do_cmd = s626_ai_cmd;
+ s->do_cmdtest = s626_ai_cmdtest;
+ s->cancel = s626_ai_cancel;
+ }
s = &dev->subdevices[1];
/* analog output subdevice */
--
1.8.1.4
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