This driver only supports async commands if a DMA channel is available. Modify
the subdevice init so that the command support only gets hooked up if we can
do DMA.
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/pcl816.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/staging/comedi/drivers/pcl816.c
b/drivers/staging/comedi/drivers/pcl816.c
index a4c5929..2498ab1 100644
--- a/drivers/staging/comedi/drivers/pcl816.c
+++ b/drivers/staging/comedi/drivers/pcl816.c
@@ -734,7 +734,7 @@ static int pcl816_attach(struct comedi_device *dev, struct
comedi_devconfig *it)
s->maxdata = board->ai_maxdata;
s->range_table = &range_pcl816;
s->insn_read = pcl816_ai_insn_read;
- if (dev->irq) {
+ if (devpriv->dma) {
dev->read_subdev = s;
s->subdev_flags |= SDF_CMD_READ;
s->len_chanlist = board->ai_chanlist;
--
1.8.5.2
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