thermal: core: Add helpers to browse the cdev, tz and governor list
The cdev, tz and governor list, as well as their respective locks are statically defined in the thermal_core.c file. In order to give a sane access to these list, like browsing all the thermal zones or all the cooling devices, let's define a set of helpers where we pass a callback as a parameter to be called for each thermal entity. We keep the self-encapsulation and ensure the locks are correctly taken when looking at the list. Acked-by: Zhang Rui <rui.zhang@intel.com> Reviewed-by: Amit Kucheria <amit.kucheria@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Link: https://lore.kernel.org/r/20200706105538.2159-1-daniel.lezcano@linaro.org
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