Commit 8429504a authored by H Hartley Sweeten's avatar H Hartley Sweeten Committed by Greg Kroah-Hartman
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staging: comedi: pcl816: only hook up async command support if DMA is available 



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: default avatarH Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: default avatarIan Abbott <abbotti@mev.co.uk>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 885a7da3

drivers/staging/comedi/drivers/pcl816.c

+1 −1
Original line number Diff line number Diff line
@@ -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;