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Aardvark controller supports Advanced Error Reporting configuration registers. Export these registers on the emulated root bridge via new .read_ext() and .write_ext() methods. Note that in the Advanced Error Reporting Capability header the offset to the next Extended Capability header is set, but it is not documented in Armada 3700 Functional Specification. Since this change adds support only for Advanced Error Reporting, explicitly clear PCI_EXT_CAP_NEXT bits in AER capability header. Now the pcieport driver correctly detects AER support and allows PCIe AER driver to start receiving ERR interrupts. Kernel log now says: pcieport 0000:00:00.0: AER: enabled with IRQ 52 Link: https://lore.kernel.org/r/20220524132827.8837-2-kabel@kernel.org Signed-off-by: Pali Rohár <pali@kernel.org> Signed-off-by: Marek Behún <kabel@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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.