The "dyna_pci10xx" driver supports the Dynalog India PCI-1050. There seems to be very little online information available about this card, but as far as I can tell[*], it only has 1 AO (analog output) channel, not 16 AO channels as reported in the Comedi subdevice information. Besides, the Comedi "insn_write" handler for the AO subdevice takes no account of channel numbers. Change the `n_chans` member of the AO subdevice structure to 1 to reflect this. [*] The card is no longer mentioned on the manufacturer's web-site and I couldn't find any archived page for the site on archive.org. I found part of a scientific paper which describes the card as having a single channel D/A converter: <http://shodhganga.inflibnet.ac.in/bitstream/10603/150646/15/15_chapter%205.pdf>. Signed-off-by: Ian Abbott <abbotti@xxxxxxxxx> --- drivers/staging/comedi/drivers/dyna_pci10xx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/staging/comedi/drivers/dyna_pci10xx.c b/drivers/staging/comedi/drivers/dyna_pci10xx.c index 08c7e8eba285..c224422bb126 100644 --- a/drivers/staging/comedi/drivers/dyna_pci10xx.c +++ b/drivers/staging/comedi/drivers/dyna_pci10xx.c @@ -196,7 +196,7 @@ static int dyna_pci10xx_auto_attach(struct comedi_device *dev, s = &dev->subdevices[1]; s->type = COMEDI_SUBD_AO; s->subdev_flags = SDF_WRITABLE; - s->n_chan = 16; + s->n_chan = 1; s->maxdata = 0x0FFF; s->range_table = &range_unipolar10; s->insn_write = dyna_pci10xx_insn_write_ao; -- 2.20.1 _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
