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f153478de4
MST encoders must use the master MST transcoder's DP_TP_STATUS and DP_TP_CONTROL registers. Atm, during the HW readout of an MST encoder connected to a slave transcoder we reset these register addresses in intel_dp::regs.dp_tp_* to the slave transcoder's DP_TP_* register addresses incorrectly; fix this. One example where the above overwite happens is the encoder HW state validation after enabling multiple streams; see intel_dp_mst_enc_get_config(). After that during disabling any stream we'll get a 'Timed out waiting for ACT sent when disabling' error, due to reading from the incorrect DP_TP_STATUS register. This change replaces https://patchwork.freedesktop.org/patch/369577/?series=78193&rev=1 which just papered over the problem. v2: - Correct the failure scenario in the commit log. (José) Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Cc: José Roberto de Souza <jose.souza@intel.com> Signed-off-by: Imre Deak <imre.deak@intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Reviewed-by: José Roberto de Souza <jose.souza@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200616211146.23027-1-imre.deak@intel.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.
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.