From: Nikolaus Schulz <schulz@xxxxxxxxxxx> By hwmon sysfs interface convention, setting pwm_enable to zero sets a fan to full speed. In the f75375s driver, this need be done by enabling manual fan control, plus duty mode for the F875387 chip, and then setting the maximum duty cycle. Fix a bug where the two necessary register writes were swapped, effectively discarding the setting to full-speed. Signed-off-by: Nikolaus Schulz <mail@xxxxxxxxxxxxxx> --- drivers/hwmon/f75375s.c | 7 +++---- 1 files changed, 3 insertions(+), 4 deletions(-) diff --git a/drivers/hwmon/f75375s.c b/drivers/hwmon/f75375s.c index faf66c8..5dae122 100644 --- a/drivers/hwmon/f75375s.c +++ b/drivers/hwmon/f75375s.c @@ -340,8 +340,6 @@ static int set_pwm_enable_direct(struct i2c_client *client, int nr, int val) fanmode |= (1 << F75387_FAN_MANU_MODE(nr)); fanmode |= (1 << F75387_FAN_DUTY_MODE(nr)); data->pwm[nr] = 255; - f75375_write8(client, F75375_REG_FAN_PWM_DUTY(nr), - data->pwm[nr]); break; case 1: /* PWM */ fanmode |= (1 << F75387_FAN_MANU_MODE(nr)); @@ -361,8 +359,6 @@ static int set_pwm_enable_direct(struct i2c_client *client, int nr, int val) case 0: /* full speed */ fanmode |= (3 << FAN_CTRL_MODE(nr)); data->pwm[nr] = 255; - f75375_write8(client, F75375_REG_FAN_PWM_DUTY(nr), - data->pwm[nr]); break; case 1: /* PWM */ fanmode |= (3 << FAN_CTRL_MODE(nr)); @@ -377,6 +373,9 @@ static int set_pwm_enable_direct(struct i2c_client *client, int nr, int val) f75375_write8(client, F75375_REG_FAN_TIMER, fanmode); data->pwm_enable[nr] = val; + if (val == 0) + f75375_write8(client, F75375_REG_FAN_PWM_DUTY(nr), + data->pwm[nr]); return 0; } -- 1.7.9.1 _______________________________________________ lm-sensors mailing list lm-sensors@xxxxxxxxxxxxxx http://lists.lm-sensors.org/mailman/listinfo/lm-sensors
