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[ Upstream commit0652d4b6b5] The IRQ physical address is allocated from region 0, rather than the highest region. Update the driver to reserve this region in the bitmap and to use region 0 for all types of interrupt. This corrects a problem which prevents the interrupt being signalled correctly if using the first address in the AXI region, since an offset of zero will always be mapped to region 0. Fixes:37dddf14f1("PCI: cadence: Add EndPoint Controller driver for Cadence PCIe controller") Signed-off-by: Alan Douglas <adouglas@cadence.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Sasha Levin <sashal@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.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.
See Documentation/00-INDEX for a list of what is contained in each file.
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.