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The hardware and ACPI info may report the presence of links that are not physically enabled (e.g. due to pin-muxing or hardware reworks), which in turn can result in errors being thrown. This shouldn't be the case for production devices but will happen a lot on development devices - even more so when they expose a connector. Even when the ACPI information is correct, it's useful to be able to only enable the links that need attention - mostly to filter out dynamic debug messages. Add a module parameter to filter out such links, e.g. adding the following config to a file in /etc/modprobe.d will select the second and third links only. options soundwire_intel_init sdw_link_mask=0x6 Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/r/20190806005522.22642-16-pierre-louis.bossart@linux.intel.com Signed-off-by: Vinod Koul <vkoul@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.