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Create four functions to handle initialization, cleanup, registration and unregistration of the V4L2 (and soon media controller) objects: - init() is meant to be called early at probe time to initialize the objects, before they get used from within the kernel - cleanup() is the counterpart of init, and is meant to be called at the end of the remove sequence to free all objects - register() is meant to be called at the end of the probe sequence, to register the userspace-facing devices - unregister() is the counterpart of register, and is meant to be called at the beginning for the remove sequence, to disallow access from userspace Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@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.