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A typical USB keyboard usually splits its keys into several reports: - one for the basic alphanumeric keys, modifier keys, F<n> keys, six pack keys and keypad. This report's application is normally listed as GenericDesktop.Keyboard - a GenericDesktop.SystemControl report for the system control keys, such as power and sleep - Consumer.ConsumerControl report for multimedia (forward, rewind, play/pause, mute, etc) and other extended keys. - additional output, vendor specific, and feature reports Splitting each report into a separate input device is wasteful and even hurts userspace as it makes it harder to determine the true capabilities (set of available keys) of a keyboard, so let's adjust application matching to merge system control and consumer control reports with keyboard report, if one has already been processed. Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Acked-by: Peter Hutterer <peter.hutterer@who-t.net> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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.