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38ff516bb0
[Why] some test apps report dp link training waring even dp training pass. there are 4 tries of lt within perform_link_training_with_retries. if lt pass within 4 tries, it will NOT be reated as lt failure. for each try of lt, if lt fails, current driver implementation prints message at warning level. this let people think dp lt does not work properly. [How] for 1st, 2nd and 3rd try of lt, print message at debug level. for the 4th try of lt, print message at warning level. Reviewed-by: Jerry Zuo <jerry.zuo@amd.com> Acked-by: Tom Chung <chiahsuan.chung@amd.com> Signed-off-by: Hersen Wu <hersenxs.wu@amd.com> Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.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.
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.