@@ -103,6 +103,40 @@ static bool power_supply_hwmon_is_a_label(enum hwmon_sensor_types type,
return type == hwmon_temp && attr == hwmon_temp_label;
}
+static bool power_supply_hwmon_has_property(
+ const struct power_supply_hwmon *psyhw,
+ enum hwmon_sensor_types type, u32 attr, int channel)
+{
+ int prop = power_supply_hwmon_to_property(type, attr, channel);
+
+ return prop >= 0 && test_bit(prop, psyhw->props);
+}
+
+static bool power_supply_hwmon_has_input(
+ const struct power_supply_hwmon *psyhw,
+ enum hwmon_sensor_types type, int channel)
+{
+ static const enum hwmon_temp_attributes temp_attrs[] = {
+ hwmon_temp_input,
+ hwmon_temp_min, hwmon_temp_max,
+ hwmon_temp_min_alarm, hwmon_temp_max_alarm,
+ };
+ size_t i;
+
+ switch (type) {
+ case hwmon_temp:
+ for (i = 0; i < ARRAY_SIZE(temp_attrs); ++i)
+ if (power_supply_hwmon_has_property(psyhw, type,
+ temp_attrs[i], channel))
+ return true;
+ break;
+ default:
+ break;
+ }
+
+ return false;
+}
+
static bool power_supply_hwmon_is_writable(enum hwmon_sensor_types type,
u32 attr)
{
@@ -129,9 +163,12 @@ static umode_t power_supply_hwmon_is_visible(const void *data,
const struct power_supply_hwmon *psyhw = data;
int prop;
-
- if (power_supply_hwmon_is_a_label(type, attr))
- return 0444;
+ if (power_supply_hwmon_is_a_label(type, attr)) {
+ if (power_supply_hwmon_has_input(psyhw, type, channel))
+ return 0444;
+ else
+ return 0;
+ }
prop = power_supply_hwmon_to_property(type, attr, channel);
if (prop < 0 || !test_bit(prop, psyhw->props))
Currently HWMON emulation shows all labels (temp and ambient temp) regardless if power supply supports reading the values. Check that at least one property is enabled for each label. Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl> --- drivers/power/supply/power_supply_hwmon.c | 43 +++++++++++++++++++++-- 1 file changed, 40 insertions(+), 3 deletions(-)