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Since commit0412841812("of/irq: Allow matching of an interrupt-map local to an interrupt controller"), a handful of interrupt controllers have stopped working correctly. This is due to the DT exposing a non-sensical interrupt-map property, and their drivers relying on the kernel ignoring this property. Since we cannot realistically fix this terrible behaviour, add a quirk for the limited set of devices that have implemented this monster, and document that this is a pretty bad practice. Fixes:0412841812("of/irq: Allow matching of an interrupt-map local to an interrupt controller") Cc: Rob Herring <robh@kernel.org> Cc: John Crispin <john@phrozen.org> Cc: Biwen Li <biwen.li@nxp.com> Cc: Chris Brandt <chris.brandt@renesas.com> Cc: Geert Uytterhoeven <geert+renesas@glider.be> Cc: Sander Vanheule <sander@svanheule.net> Signed-off-by: Marc Zyngier <maz@kernel.org> Tested-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20211201114102.13446-1-maz@kernel.org Signed-off-by: Rob Herring <robh@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 Restructured Text 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.