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76bc7af016b6b868124f7a28a8c7f39a3e2b3d09
debug_port_init() may called when earlycon is used, which may block kernel init. Use console_lock()/console_unlock() to avoid the race. Change-Id: I711c038f31141cb5225624e2a9d746bd4de232e4 Signed-off-by: Tao Huang <huangtao@rock-chips.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.
See Documentation/00-INDEX for a list of what is contained in each file.
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.
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