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commit3c6f13ad72upstream. The TCSS_DDI_STATUS register is indexed by tc_port not by the FIA port index, fix this up. This only caused an issue on TC#3/4 ports in legacy mode, as in all other cases the two indices either match (on TC#1/2) or the TCSS_DDI_STATUS_READY flag is set regardless of something being connected or not (on TC#1/2/3/4 in dp-alt and tbt-alt modes). Reported-and-tested-by: Chia-Lin Kao (AceLan) <acelan.kao@canonical.com> Fixes:55ce306c2a("drm/i915/adl_p: Implement TC sequences") Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/4698 Cc: José Roberto de Souza <jose.souza@intel.com> Cc: <stable@vger.kernel.org> # v5.14+ Signed-off-by: Imre Deak <imre.deak@intel.com> Reviewed-by: José Roberto de Souza <jose.souza@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20220126104356.2022975-1-imre.deak@intel.com (cherry picked from commit516b33460c) Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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.