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[ Upstream commit03371e4fbd] The irq_of_parse_and_map() function returns 0 on failure, and does not return a negative value anyhow, so never enter this conditional branch. Fixes:f6a8eaca0e("drm/msm/mdp5: use irqdomains") Reported-by: Zeal Robot <zealci@zte.com.cn> Signed-off-by: Lv Ruyi <lv.ruyi@zte.com.cn> Reviewed-by: Stephen Boyd <swboyd@chromium.org> Patchwork: https://patchwork.freedesktop.org/patch/483294/ Link: https://lore.kernel.org/r/20220425091831.3500487-1-lv.ruyi@zte.com.cn Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Signed-off-by: Sasha Levin <sashal@kernel.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.