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[ Upstream commita36e506711] It will cause null-ptr-deref if platform_get_resource_byname() returns NULL, we need check the return value. Fixes:c6a57a50ad("drm/msm/hdmi: add hdmi hdcp support (V3)") Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Patchwork: https://patchwork.freedesktop.org/patch/482992/ Link: https://lore.kernel.org/r/20220422032227.2991553-1-yangyingliang@huawei.com 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.