Represent the fake samples as unsigned shorts instead of signed shorts, as this is the usual Comedi convention. There is no change to the actual binary representation, although the `cfc_write_to_buffer()` call currently expects a signed short for some bizarre reason.
Signed-off-by: Ian Abbott <[email protected]> --- drivers/staging/comedi/drivers/comedi_test.c | 21 ++++++++++++--------- 1 file changed, 12 insertions(+), 9 deletions(-) diff --git a/drivers/staging/comedi/drivers/comedi_test.c b/drivers/staging/comedi/drivers/comedi_test.c index 48255b3..ce13fbc 100644 --- a/drivers/staging/comedi/drivers/comedi_test.c +++ b/drivers/staging/comedi/drivers/comedi_test.c @@ -85,8 +85,9 @@ static const struct comedi_lrange waveform_ai_ranges = { } }; -static short fake_sawtooth(struct comedi_device *dev, unsigned int range_index, - unsigned long current_time) +static unsigned short fake_sawtooth(struct comedi_device *dev, + unsigned int range_index, + unsigned long current_time) { struct waveform_private *devpriv = dev->private; struct comedi_subdevice *s = dev->read_subdev; @@ -109,9 +110,9 @@ static short fake_sawtooth(struct comedi_device *dev, unsigned int range_index, return offset + value; } -static short fake_squarewave(struct comedi_device *dev, - unsigned int range_index, - unsigned long current_time) +static unsigned short fake_squarewave(struct comedi_device *dev, + unsigned int range_index, + unsigned long current_time) { struct waveform_private *devpriv = dev->private; struct comedi_subdevice *s = dev->read_subdev; @@ -131,15 +132,17 @@ static short fake_squarewave(struct comedi_device *dev, return offset + value; } -static short fake_flatline(struct comedi_device *dev, unsigned int range_index, - unsigned long current_time) +static unsigned short fake_flatline(struct comedi_device *dev, + unsigned int range_index, + unsigned long current_time) { return dev->read_subdev->maxdata / 2; } /* generates a different waveform depending on what channel is read */ -static short fake_waveform(struct comedi_device *dev, unsigned int channel, - unsigned int range, unsigned long current_time) +static unsigned short fake_waveform(struct comedi_device *dev, + unsigned int channel, unsigned int range, + unsigned long current_time) { enum { SAWTOOTH_CHAN, -- 1.8.0 _______________________________________________ devel mailing list [email protected] http://driverdev.linuxdriverproject.org/mailman/listinfo/devel
