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Sparse reports "Using plain integer as NULL pointer" when the arm64 __get_user_error() assigns 0 to a pointer type. Use proper type annotation. Signed-of-by: Al Viro <viro@zeniv.linux.org.uk> Reported-by: kbuild test robot <lkp@intel.com> Link: http://lkml.kernel.org/r/20200522142321.GP23230@ZenIV.linux.org.uk Signed-off-by: Catalin Marinas <catalin.marinas@arm.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.