Commit aa25b913 authored by H Hartley Sweeten's avatar H Hartley Sweeten Committed by Greg Kroah-Hartman

staging: comedi: usbduxsigma: return void from usbduxsigma_pwm_pattern()

This function never fails and currently returns '1' so that the
usbduxsigma_pwm_write() function returns to proper value (insn->n).

It's also called by usbduxsigma_pwm_config() which also returns the
'1' value. The proper return code for this function should be '0' to
indicate success.

Change the return type of the function to void and just have the
callers return the proper values.
Signed-off-by: default avatarH Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: default avatarIan Abbott <abbotti@mev.co.uk>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 89878614
...@@ -1238,11 +1238,11 @@ static int usbduxsigma_pwm_start(struct comedi_device *dev, ...@@ -1238,11 +1238,11 @@ static int usbduxsigma_pwm_start(struct comedi_device *dev,
return 0; return 0;
} }
static int usbduxsigma_pwm_pattern(struct comedi_device *dev, static void usbduxsigma_pwm_pattern(struct comedi_device *dev,
struct comedi_subdevice *s, struct comedi_subdevice *s,
unsigned int chan, unsigned int chan,
unsigned int value, unsigned int value,
unsigned int sign) unsigned int sign)
{ {
struct usbduxsigma_private *devpriv = dev->private; struct usbduxsigma_private *devpriv = dev->private;
char pwm_mask = (1 << chan); /* DIO bit for the PWM data */ char pwm_mask = (1 << chan); /* DIO bit for the PWM data */
...@@ -1263,7 +1263,6 @@ static int usbduxsigma_pwm_pattern(struct comedi_device *dev, ...@@ -1263,7 +1263,6 @@ static int usbduxsigma_pwm_pattern(struct comedi_device *dev,
c |= sgn_mask; c |= sgn_mask;
*buf++ = c; *buf++ = c;
} }
return 1;
} }
static int usbduxsigma_pwm_write(struct comedi_device *dev, static int usbduxsigma_pwm_write(struct comedi_device *dev,
...@@ -1284,7 +1283,9 @@ static int usbduxsigma_pwm_write(struct comedi_device *dev, ...@@ -1284,7 +1283,9 @@ static int usbduxsigma_pwm_write(struct comedi_device *dev,
* The sign is set via a special INSN only, this gives us 8 bits * The sign is set via a special INSN only, this gives us 8 bits
* for normal operation, sign is 0 by default. * for normal operation, sign is 0 by default.
*/ */
return usbduxsigma_pwm_pattern(dev, s, chan, data[0], 0); usbduxsigma_pwm_pattern(dev, s, chan, data[0], 0);
return insn->n;
} }
static int usbduxsigma_pwm_config(struct comedi_device *dev, static int usbduxsigma_pwm_config(struct comedi_device *dev,
...@@ -1319,8 +1320,8 @@ static int usbduxsigma_pwm_config(struct comedi_device *dev, ...@@ -1319,8 +1320,8 @@ static int usbduxsigma_pwm_config(struct comedi_device *dev,
* data[1] = value * data[1] = value
* data[2] = sign (for a relay) * data[2] = sign (for a relay)
*/ */
return usbduxsigma_pwm_pattern(dev, s, chan, usbduxsigma_pwm_pattern(dev, s, chan, data[1], (data[2] != 0));
data[1], (data[2] != 0)); return 0;
case INSN_CONFIG_PWM_GET_H_BRIDGE: case INSN_CONFIG_PWM_GET_H_BRIDGE:
/* values are not kept in this driver, nothing to return */ /* values are not kept in this driver, nothing to return */
return -EINVAL; return -EINVAL;
......
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