staging: comedi: cb_das16_cs: the DAC16/16-AO only has 4 digital I/O

The PC-CARD DAS16/16-AO board only has 4 digital I/O channels. The other
boards supported by this driver have 8. Add the boardinfo to correctly
initialize the subdevice.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/comedi/drivers/cb_das16_cs.c b/drivers/staging/comedi/drivers/cb_das16_cs.c
index 0769878..45db386 100644 (file)
--- a/drivers/staging/comedi/drivers/cb_das16_cs.c
+++ b/drivers/staging/comedi/drivers/cb_das16_cs.c
@@ -100,6 +100,7 @@ struct das16cs_board {
        const char *name;
        int device_id;
        unsigned int has_ao:1;
+       unsigned int has_4dio:1;
 };
 
 static const struct das16cs_board das16cs_boards[] = {
@@ -107,6 +108,7 @@ static const struct das16cs_board das16cs_boards[] = {
                .name           = "PC-CARD DAS16/16-AO",
                .device_id      = 0x0039,
                .has_ao         = 1,
+               .has_4dio       = 1,
        }, {
                .name           = "PCM-DAS16s/16",
                .device_id      = 0x4009,
@@ -407,11 +409,11 @@ static int das16cs_auto_attach(struct comedi_device *dev,
                s->type         = COMEDI_SUBD_UNUSED;
        }
 
+       /* Digital I/O subdevice */
        s = &dev->subdevices[2];
-       /* digital i/o subdevice */
        s->type         = COMEDI_SUBD_DIO;
        s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
-       s->n_chan       = 8;
+       s->n_chan       = board->has_4dio ? 4 : 8;
        s->maxdata      = 1;
        s->range_table  = &range_digital;
        s->insn_bits    = das16cs_dio_insn_bits;