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b3c95d0bdb
When crtc state need_modeset is true it is not necessary it is going to be a real modeset, it can turns to be a fastset instead of modeset. This turns content protection property to be DESIRED and hdcp update_pipe left with property to be in DESIRED state but actual hdcp->value was ENABLED. This issue is caught with DP MST setup, where we have multiple connector in same DP_MST topology. When disabling HDCP on one of DP MST connector leads to set the crtc state need_modeset to true for all other crtc driving the other DP-MST topology connectors. This turns up other DP MST connectors CP property to be DESIRED despite the actual hdcp->value is ENABLED. Above scenario fails the DP MST HDCP IGT test, disabling HDCP on one MST stream should not cause to disable HDCP on another MST stream on same DP MST topology. v2: - Fixed connector->base.registration_state == DRM_CONNECTOR_REGISTERED WARN_ON. v3: - Commit log improvement. [Uma] - Added a comment before scheduling prop_work. [Uma] Fixes: |
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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.
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.