diff options
Diffstat (limited to 'drivers/hwmon/mlxreg-fan.c')
| -rw-r--r-- | drivers/hwmon/mlxreg-fan.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/drivers/hwmon/mlxreg-fan.c b/drivers/hwmon/mlxreg-fan.c index 116681fde33d..89fe7b9fe26b 100644 --- a/drivers/hwmon/mlxreg-fan.c +++ b/drivers/hwmon/mlxreg-fan.c @@ -315,8 +315,8 @@ static int mlxreg_fan_set_cur_state(struct thermal_cooling_device *cdev, { struct mlxreg_fan *fan = cdev->devdata; unsigned long cur_state; + int i, config = 0; u32 regval; - int i; int err; /* @@ -329,6 +329,12 @@ static int mlxreg_fan_set_cur_state(struct thermal_cooling_device *cdev, * overwritten. */ if (state >= MLXREG_FAN_SPEED_MIN && state <= MLXREG_FAN_SPEED_MAX) { + /* + * This is configuration change, which is only supported through sysfs. + * For configuration non-zero value is to be returned to avoid thermal + * statistics update. + */ + config = 1; state -= MLXREG_FAN_MAX_STATE; for (i = 0; i < state; i++) fan->cooling_levels[i] = state; @@ -343,7 +349,7 @@ static int mlxreg_fan_set_cur_state(struct thermal_cooling_device *cdev, cur_state = MLXREG_FAN_PWM_DUTY2STATE(regval); if (state < cur_state) - return 0; + return config; state = cur_state; } @@ -359,7 +365,7 @@ static int mlxreg_fan_set_cur_state(struct thermal_cooling_device *cdev, dev_err(fan->dev, "Failed to write PWM duty\n"); return err; } - return 0; + return config; } static const struct thermal_cooling_device_ops mlxreg_fan_cooling_ops = { |