The 'len_chanlist' and 'cancel' members of the comedi_subdevice are
only used with async command support. Only initialize them if the irq
was sucessfully requested.
Signed-off-by: H Hartley Sweeten <hsweeten@xxxxxxxxxxxxxxxxxxx>
Cc: Ian Abbott <abbotti@xxxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/staging/comedi/drivers/pcl818.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/staging/comedi/drivers/pcl818.c b/drivers/staging/comedi/drivers/pcl818.c
index e1fef1b..ad1f347 100644
--- a/drivers/staging/comedi/drivers/pcl818.c
+++ b/drivers/staging/comedi/drivers/pcl818.c
@@ -1279,15 +1279,15 @@ no_dma:
s->subdev_flags |= SDF_DIFF;
}
s->maxdata = board->ai_maxdata;
- s->len_chanlist = s->n_chan;
s->range_table = board->ai_range_type;
- s->cancel = pcl818_ai_cancel;
s->insn_read = pcl818_ai_insn_read;
if (dev->irq) {
dev->read_subdev = s;
s->subdev_flags |= SDF_CMD_READ;
+ s->len_chanlist = s->n_chan;
s->do_cmdtest = ai_cmdtest;
s->do_cmd = ai_cmd;
+ s->cancel = pcl818_ai_cancel;
}
if (board->is_818) {
if ((it->options[4] == 1) || (it->options[4] == 10))
--
1.8.4.4
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