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The only difference made by CONFIG_THERMAL_WRITABLE_TRIPS is whether or not the writable trips mask passed during thermal zone registration will take any effect, but whoever passes a non-zero writable trips mask to thermal_zone_device_register_with_trips() can be forgiven thinking that it will always work. Moreover, some thermal drivers expect user space to set trip temperature values, so they select CONFIG_THERMAL_WRITABLE_TRIPS, possibly overriding a manual choice to unset it and going against the design purportedly allowing system integrators to decide on the writability of trip points for the given kernel build. It is also set in one platform's defconfig. Forthermore, CONFIG_THERMAL_WRITABLE_TRIPS only affects trip temperature, because trip hysteresis is writable as long as the thermal zone provides a callback to update it, regardless of the CONFIG_THERMAL_WRITABLE_TRIPS value. The above means that the symbol in question is used inconsistently and its purpose is at least moot, so remove it and always take the writable trip mask passed to thermal_zone_device_register_with_trips() into account. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Daniel Lezcano <daniel.lezcano@linaro.org> |
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