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616f5b65f1
[Why] The new implementation changed the behavior to allow process setMode to DAL when DAL returns empty mode query for unplugged display. This will trigger additional disable_link(). When unplug HDMI from MST dock, driver will update stream->signal to "Virtual". disable_link() will call disable_output() if the signal type is not DP and induce other displays on MST dock show black screen. [How] Don't need to process disable_output() if the signal type is virtual. Signed-off-by: Martin Tsai <martin.tsai@amd.com> Reviewed-by: Charlene Liu <Charlene.Liu@amd.com> Acked-by: Leo Li <sunpeng.li@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.