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d03a6d4e2b
A request to set the line speed to B0 is used to hang up a modem connection by deasserting the modem control lines. Note that there is no need reconfigure the line speed in hardware when B0 is requested (even if some drivers do set it to an arbitrary value for implementation or protocol reasons). Reviewed-by: Alex Henrie <alexh@vpitech.com> Signed-off-by: Johan Hovold <johan@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.