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5ae06c237f
kmalloc() could fail, so insert a check of its return value. And if it fails, returns -ENOMEM. And remove (struct pstate_idx_revmap_data *) to fix coccinelle WARNING by the way. WARNING: casting value returned by memory allocation function to (struct pstate_idx_revmap_data *) is useless. Signed-off-by: Yangtao Li <tiny.windzz@gmail.com> Signed-off-by: Viresh Kumar <viresh.kumar@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.