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Thermal device attributes may still be opened after unregistering the thermal zone and deleting the thermal device. Currently there is no protection against accessing thermal device operations after unregistering a thermal zone. To enable adding such protection, protect the device delete operation with the thermal zone device mutex. This requires splitting the call to device_unregister() into its components, device_del() and put_device(). Only the first call can be executed under mutex protection, since put_device() may result in releasing the thermal zone device memory. Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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.