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This results in the hp_wmi driver exposing `fan1_input` and `fan2_input` nodes through hwmon that permanently report "0 RPM", which is misleading and interferes with userspace sensor monitoring tools. Add a DMI quirk to disable exposing the hwmon fan nodes on this specific board. Signed-off-by: Bani Brata --- drivers/platform/x86/hp/hp-wmi.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/drivers/platform/x86/hp/hp-wmi.c b/drivers/platform/x86/hp/hp-wmi.c index XXXXXXX..XXXXXXX 100644 --- a/drivers/platform/x86/hp/hp-wmi.c +++ b/drivers/platform/x86/hp/hp-wmi.c @@ -192,6 +192,18 @@ static const struct dmi_system_id hp_wmi_rfkill_dmi_table[] __initconst = { }; static bool is_victus_s_board; +static bool is_envy_x360_8824_board; + +static const struct dmi_system_id hp_envy_x360_8824_boards[] __initconst = { + { + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "HP"), + DMI_MATCH(DMI_PRODUCT_NAME, "HP ENVY x360 Convertible 13-bd0xxx"), + DMI_MATCH(DMI_BOARD_NAME, "8824"), + }, + }, + {}, +}; enum hp_wmi_radio { HPWMI_WIFI = 0x0, @@ -2166,6 +2178,8 @@ static umode_t hp_wmi_hwmon_is_visible(const void *data, case hwmon_pwm: return 0644; case hwmon_fan: + if (is_envy_x360_8824_board) + return 0; if (is_victus_s_thermal_profile()) { if (hp_wmi_get_fan_speed_victus_s(channel) >= 0) return 0444; @@ -2188,6 +2202,8 @@ static int hp_wmi_hwmon_read(struct device *dev, enum hwmon_sensor_types type, switch (type) { case hwmon_fan: + if (is_envy_x360_8824_board) + return -EOPNOTSUPP; if (is_victus_s_thermal_profile()) ret = hp_wmi_get_fan_speed_victus_s(channel); else @@ -2281,6 +2297,8 @@ static int __init hp_wmi_bios_setup(struct platform_device *device) { const struct dmi_system_id *id; + is_envy_x360_8824_board = dmi_first_match(hp_envy_x360_8824_boards); + /* * Currently only victus_s devices use the * active_thermal_profile_params -- 2.48.1