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commit 5493f9714e4cdaf0ee7cec15899a231400cb1a9f upstream. cpufreq_cpu_get may return NULL. To avoid NULL-dereference check it and return in case of error. Found by Linux Verification Center (linuxtesting.org) with SVACE. Signed-off-by: Anastasia Belova <abelova@astralinux.ru> Reviewed-by: Perry Yuan <perry.yuan@amd.com> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> [ Raj: on 6.6, there don't have function amd_pstate_update_limits() so applied the NULL checking in amd_pstate_adjust_perf() only ] Signed-off-by: Rajani Kantha <rajanikantha@engineer.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.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.