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Pure ACPI systems (e.g., LoongArch) do not need OF_IRQ, but still require irqchip_init() to perform the ACPI irqchip probing, even when OF_IRQ isn't selected. Relax the dependency to enable the generic irqchip support when ACPI_GENERIC_GSI is configured. Signed-off-by: Huacai Chen <chenhuacai@loongson.cn> Tested-by: Tiezhu Yang <yangtiezhu@loongson.cn> [maz: revamped commit message] Signed-off-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20220927124557.3246737-1-chenhuacai@loongson.cn
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.