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Commit8b65db1e93("irqchip/msi-lib: Add IRQ_DOMAIN_FLAG_FWNODE_PARENT handling") added logic in msi_lib_irq_domain_select() to match the domain fwnode against the fwnode parent of the fwspec.fwnode. The fwnode_get_parent() caller must call fwnode_handle_put() on the returned pointer value, lest fwnode refcounting for the parent ends up being out of kilter. Fix this by relying on the fwnode_handle clean-up handlers and by incrementing the fwnode refcount regardless of whether parent matching is used or not (the domain selection code already holds a reference before calling msi_lib_irq_domain_select() but to make the exit path more uniform if IRQ_DOMAIN_FLAG_FWNODE_PARENT is not set fwnode_handle_get() is called again on fwspec.fwnode so that the clean-up code is the same for the two matching patterns). Fixes:8b65db1e93("irqchip/msi-lib: Add IRQ_DOMAIN_FLAG_FWNODE_PARENT handling") Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20250804145553.795065-1-lpieralisi@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.