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011a78c194
This assigns the .irq_set_affinity to the parent callback. I assume the sifive GPIO can be used in systems with SMP. I used the pattern making the hirerarchy tolerant for missing parent as in Marc's earlier patches. Suggested-by: Marc Zyngier <maz@kernel.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Cc: Yash Shah <yash.shah@sifive.com> Cc: Wesley W. Terpstra <wesley@sifive.com> Link: https://lore.kernel.org/r/20201117213351.249668-1-linus.walleij@linaro.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.