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path: root/drivers/staging/comedi/drivers/comedi_test.c
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Diffstat (limited to 'drivers/staging/comedi/drivers/comedi_test.c')
-rw-r--r--drivers/staging/comedi/drivers/comedi_test.c21
1 files changed, 12 insertions, 9 deletions
diff --git a/drivers/staging/comedi/drivers/comedi_test.c b/drivers/staging/comedi/drivers/comedi_test.c
index 48255b37bf27..ce13fbc52ef9 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,