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When an MFD device is added, a platform_device is allocated. If this device is linked to a DT description, the corresponding OF node is linked to the new platform device but the OF node's refcount isn't incremented. As of_node_put() is called during the platform device release, it leads to a refcount underflow. Call of_node_get() to increment the OF node's refcount when the node is linked to the newly created platform device. Signed-off-by: Bastien Curutchet <bastien.curutchet@bootlin.com> Link: https://lore.kernel.org/r/20250820-mfd-refcount-v1-1-6dcb5eb41756@bootlin.com Signed-off-by: Lee Jones <lee@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.