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thermal/drivers/intel: Initialize RW trip to THERMAL_TEMP_INVALID

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commit eb8500b874 upstream.

After commit 81ad4276b5 ("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.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Srinivas Pandruvada 2021-04-30 05:23:43 -07:00 • committed by Greg Kroah-Hartman
commit a40b07afcb
2 changed files with 5 additions and 1 deletions
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4
drivers/thermal/intel/int340x_thermal/int340x_thermal_zone.c
View file

@ -231,6 +231,8 @@ struct int34x_thermal_zone *int340x_thermal_zone_add(struct acpi_device *adev,
if (ACPI_FAILURE(status))
trip_cnt = 0;
else {
int i;
int34x_thermal_zone->aux_trips =
kcalloc(trip_cnt,
sizeof(*int34x_thermal_zone->aux_trips),
@ -241,6 +243,8 @@ struct int34x_thermal_zone *int340x_thermal_zone_add(struct acpi_device *adev,
}
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);

2
drivers/thermal/intel/x86_pkg_temp_thermal.c
View file

@ -164,7 +164,7 @@ static int sys_get_trip_temp(struct thermal_zone_device *tzd,
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;