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The caller of the function thermal_zone_device_register_with_trips() can pass a thermal_zone_params structure parameter. This one is used by the thermal core code until the thermal zone is destroyed. That forces the caller, so the driver, to keep the pointer valid until it unregisters the thermal zone if we want to make the thermal zone device structure private the core code. As the thermal zone device structure would be private, the driver can not access to thermal zone device structure to retrieve the tzp field after it passed it to register the thermal zone. So instead of forcing the users of the function to deal with the tzp structure life cycle, make the usage easier by allocating our own thermal zone params, copying the parameter content and by freeing at unregister time. The user can then create the parameters on the stack, pass it to the registering function and forget about it. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Link: https://lore.kernel.org/r/20230404075138.2914680-3-daniel.lezcano@linaro.org
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.