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e56faff57f
Add pci_speed_string() to return a text description of the supplied bus or link speed. The slot code previously used the private pci_bus_speed_strings[] array for this purpose, but adding this interface will enable us to consolidate similar code elsewhere. Export pcie_link_speed[] and pci_speed_string() so they can be used by modules. 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.