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2ffa39c83b
debugfs_create_dir() function returns an error value embedded in the pointer (PTR_ERR). Evaluate the return value using IS_ERR rather than checking for NULL. Signed-off-by: Minjie Du <duminjie@vivo.com> Reviewed-by: Alexandre Mergnat <amergnat@baylibre.com> Reviewed-by: Chen-Yu Tsai <wenst@chromium.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Link: https://lore.kernel.org/r/20230921091057.3812-1-duminjie@vivo.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.