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[ Upstream commit a9a1bcba90254975d4adbcca53f720318cf81c0c ] This is a preparation before adding the Max-Link-width capability setup which would in its turn complete the max-link-width setup procedure defined by Synopsys in the HW-manual. Seeing there is a max-link-speed setup method defined in the DW PCIe core driver it would be good to have a similar function for the link width setup. That's why we need to define a dedicated function first from already implemented but incomplete link-width setting up code. Link: https://lore.kernel.org/linux-pci/20231018085631.1121289-3-yoshihiro.shimoda.uh@renesas.com Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org> Reviewed-by: Manivannan Sadhasivam <mani@kernel.org> Reviewed-by: Serge Semin <fancer.lancer@gmail.com> Signed-off-by: Sasha Levin <sashal@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.