staging: comedi: quatech_daqp_cs: ao subdevice does not support commands

The analog output subdevice does not support aynchronous commands.
Don't set the dev->write_subdev to this subdevice.

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

diff --git a/drivers/staging/comedi/drivers/quatech_daqp_cs.c b/drivers/staging/comedi/drivers/quatech_daqp_cs.c
index 6eab3bb..40d525c 100644 (file)
--- a/drivers/staging/comedi/drivers/quatech_daqp_cs.c
+++ b/drivers/staging/comedi/drivers/quatech_daqp_cs.c
@@ -763,7 +763,6 @@ static int daqp_auto_attach(struct comedi_device *dev,
        s->cancel       = daqp_ai_cancel;
 
        s = &dev->subdevices[1];
-       dev->write_subdev = s;
        s->private      = local;
        s->type         = COMEDI_SUBD_AO;
        s->subdev_flags = SDF_WRITEABLE;