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5c88ed7985
This will make PCI bridge to return zeros when accessing IO base and limit registers, as required by PCIe base specification. This allows to remove adhoc checks around mvebu_pcie_handle_iobase_change() function for unsupported IO ranges. PCI_BRIDGE_EMUL_NO_IO_FORWARD ensures that there will be no non-zeros write to IO registers when IO is not supported. Link: https://lore.kernel.org/r/20220104153529.31647-8-pali@kernel.org Signed-off-by: Pali Rohár <pali@kernel.org> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-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.