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Previously, the regulator core resolved its supply only from the parent device or its children, ignoring the of_node specified in the regulator_config structure. This behavior causes issues in scenarios where multiple regulator devices are registered for components described as children of a controller, each with their own specific regulator supply. For instance, in a PSE controller with multiple PIs (Power Interfaces), each PI may have a distinct regulator supply. However, the regulator core would incorrectly use the PSE controller node or its first child to look up the regulator supply, rather than the node specified by the regulator_config->of_node for the PI. This update modifies the behavior to prioritize the of_node in regulator_config for resolving the supply. This ensures correct resolution of the power supply for each device. If no supply is found in the provided of_node, the core falls back to searching within the parent device as before. Reviewed-by: Oleksij Rempel <o.rempel@pengutronix.de> Signed-off-by: Kory Maincent <kory.maincent@bootlin.com> Link: https://patch.msgid.link/20250109-b4-feature_poe_arrange-v2-13-55ded947b510@bootlin.com Signed-off-by: Mark Brown <broonie@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 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.