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5c9dcafb33bb76414f783cf1d3cbff2202280431
We found a situation where state->visible is true but the plane is disabled, and state->fb is null. According to the documentation of struct drm_plane_state, the member crtc can truly describe the plane enable/active state. So we check state->crtc instead of plane->visible here. Change-Id: I9f9e8912c7279c1c68c8370014b08c7ba6bae72c Signed-off-by: Andy Yan <andy.yan@rock-chips.com>
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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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