From: Srinivas Pandruvada srinivas.pandruvada@linux.intel.com
commit eb8500b874cf295971a6a2a04e14eb0854197a3c upstream.
After commit 81ad4276b505 ("Thermal: Ignore invalid trip points") all user_space governor notifications via RW trip point is broken in intel thermal drivers. This commits marks trip_points with value of 0 during call to thermal_zone_device_register() as invalid. RW trip points can be 0 as user space will set the correct trip temperature later.
During driver init, x86_package_temp and all int340x drivers sets RW trip temperature as 0. This results in all these trips marked as invalid by the thermal core.
To fix this initialize RW trips to THERMAL_TEMP_INVALID instead of 0.
Cc: stable@vger.kernel.org Signed-off-by: Srinivas Pandruvada srinivas.pandruvada@linux.intel.com Signed-off-by: Daniel Lezcano daniel.lezcano@linaro.org Link: https://lore.kernel.org/r/20210430122343.1789899-1-srinivas.pandruvada@linux... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/thermal/intel/int340x_thermal/int340x_thermal_zone.c | 4 ++++ drivers/thermal/intel/x86_pkg_temp_thermal.c | 2 +- 2 files changed, 5 insertions(+), 1 deletion(-)
--- a/drivers/thermal/intel/int340x_thermal/int340x_thermal_zone.c +++ b/drivers/thermal/intel/int340x_thermal/int340x_thermal_zone.c @@ -237,6 +237,8 @@ struct int34x_thermal_zone *int340x_ther if (ACPI_FAILURE(status)) trip_cnt = 0; else { + int i; + int34x_thermal_zone->aux_trips = kcalloc(trip_cnt, sizeof(*int34x_thermal_zone->aux_trips), @@ -247,6 +249,8 @@ struct int34x_thermal_zone *int340x_ther } trip_mask = BIT(trip_cnt) - 1; int34x_thermal_zone->aux_trip_nr = trip_cnt; + for (i = 0; i < trip_cnt; ++i) + int34x_thermal_zone->aux_trips[i] = THERMAL_TEMP_INVALID; }
trip_cnt = int340x_thermal_read_trips(int34x_thermal_zone); --- a/drivers/thermal/intel/x86_pkg_temp_thermal.c +++ b/drivers/thermal/intel/x86_pkg_temp_thermal.c @@ -166,7 +166,7 @@ static int sys_get_trip_temp(struct ther if (thres_reg_value) *temp = zonedev->tj_max - thres_reg_value * 1000; else - *temp = 0; + *temp = THERMAL_TEMP_INVALID; pr_debug("sys_get_trip_temp %d\n", *temp);
return 0;