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a71afdc005
In preparation for adding a new driver for HDMIv2, for which CEC is not strictly required, change the of_get_compatible_child() failure error to -EOPNOTSUPP to be able to differentiate between error conditions in mtk_hdmi_dt_parse_pdata(). In that case, if -EOPNOTSUPP is returned, this driver will print an informative message saying that CEC support is unavailable, as the devicetree node for that was not found, but after that, function mtk_hdmi_dt_parse_pdata() will not return error to the caller. This will not change functionality of the mtk_hdmi (v1) driver as that is still checking whether CEC is present and, if not, will fail probing with an error saying that CEC is required by HDMIv1. Reviewed-by: CK Hu <ck.hu@mediatek.com> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Signed-off-by: Louis-Alexis Eyraud <louisalexis.eyraud@collabora.com> Link: https://patchwork.kernel.org/project/linux-mediatek/patch/20251023-mediatek-drm-hdmi-v2-v11-5-7873ec4a1edf@collabora.com/ Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org> |
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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 reStructuredText 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.