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When system resumes from S3, the CPPC enable register will be cleared and reset to 0. So enable the CPPC interface by writing 1 to this register on system resume and disable it during system suspend. Signed-off-by: Jinzhou Su <Jinzhou.Su@amd.com> Signed-off-by: Jinzhou Su <Jinzhou.Su@amd.com> Acked-by: Huang Rui <ray.huang@amd.com> [ rjw: Subject and changelog edits ] Cc: All applicable <stable@vger.kernel.org> 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.