@@ -219,6 +219,11 @@ static int max31790_read_fan(struct device *dev, u32 attr, int channel,
switch (attr) {
case hwmon_fan_input:
+ if (!(data->fan_config[channel] &
+ MAX31790_FAN_CFG_TACH_INPUT_EN)) {
+ *val = 0;
+ return 0;
+ }
sr = get_tach_period(data->fan_dynamics[channel]);
rpm = RPM_FROM_REG(data->tach[channel],
sr,
@@ -233,6 +238,11 @@ static int max31790_read_fan(struct device *dev, u32 attr, int channel,
*val = rpm;
return 0;
case hwmon_fan_fault:
+ if (!(data->fan_config[channel] &
+ MAX31790_FAN_CFG_TACH_INPUT_EN)) {
+ *val = 0;
+ return 0;
+ }
*val = !!(data->fault_status & (1 << channel));
return 0;
case hwmon_fan_enable:
When fan speed input is disabled, it makes no sense to show values in fan*_input and fan*_fault. Signed-off-by: Václav Kubernát <kubernat@cesnet.cz> --- drivers/hwmon/max31790.c | 10 ++++++++++ 1 file changed, 10 insertions(+)