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[Why] When running a game/benchmark with v-sync disabled, disabling a plane (which is v-sync) can cause an underflow. This is due to flips that are pending before pipe locking being applied after locks are released and pipes have been re-arranged or disconnected. This can potentially apply a flip on the incorrect pipe. [How] Check that any pending flips are cleared before locking any pipes to ensure flips are applied on the correct pipes. Signed-off-by: Taimur Hassan <syed.hassan@amd.com> Reviewed-by: Aric Cyr <Aric.Cyr@amd.com> Acked-by: Qingqing Zhuo <qingqing.zhuo@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.