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drm_bridge_connector_init() takes eight pointers to various bridges, some of which can be identical, and stores them in pointers inside struct drm_bridge_connector. Get a reference to each of the taken bridges and put it on cleanup. Achieve this by adding a drmm cleanup callback whic puts all the non-NULL bridges. Using drmm ensures the cleanup happens on drm_device teardown, whichever is the return value of this function. Four of these pointers (edid, hpd, detect and modes) can be written multiple times (up to once per loop iterations), in order to eventually store the last matching bridge. So when one of those pointers is overwritten, we need to put the reference that we got during the previous assignment. Add a drm_bridge_put() before writing them to handle this. Reviewed-by: Louis Chauvet <louis.chauvet@bootlin.com> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> Tested-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> # db410c Tested-by: Geert Uytterhoeven <geert+renesas@glider.be> Tested-by: Nicolas Frattaroli <nicolas.frattaroli@collabora.com> Tested-by: Tommaso Merciai <tommaso.merciai.xr@bp.renesas.com> Tested-by: Marek Szyprowski <m.szyprowski@samsung.com> Link: https://patch.msgid.link/20251017-drm-bridge-alloc-getput-bridge-connector-fix-hdmi_cec-v2-2-667abf6d47c0@bootlin.com Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.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 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.