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If the DPCD sink rate values read from the sink are invalid, the driver will sanitize this in intel_dp_set_common_rates(), by setting a default 162000 link rate in common rates and printing a WARN(). WARN()s should only be triggered by bugs in the code and not by external factors like the above (an invalid DPCD injected maliciously or read from a buggy monitor). So fixup the invalid DPCD sink rate values already and print an error in this case (since it's still a user visible problem). Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Imre Deak <imre.deak@intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Acked-by: Jani Nikula <jani.nikula@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20211018094154.1407705-6-imre.deak@intel.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.