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0414b93e78
On a system that uses the internal DWC MSI widget, I get this warning from debugfs when CONFIG_GENERIC_IRQ_DEBUGFS is selected: debugfs: File ':soc:pcie@fc000000' in directory 'domains' already present! This is due to the fact that the DWC MSI code tries to register two IRQ domains for the same firmware node, without telling the low level code how to distinguish them (by setting a bus token). This further confuses debugfs which tries to create corresponding files for each domain. Fix it by tagging the inner domain as DOMAIN_BUS_NEXUS, which is the closest thing we have as to "generic MSI". Link: https://lore.kernel.org/r/20200501113921.366597-1-maz@kernel.org Signed-off-by: Marc Zyngier <maz@kernel.org> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Acked-by: Jingoo Han <jingoohan1@gmail.com> |
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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.