6040c99cb1
[ Upstream commit b80ddeb29d9df449f875f0b6f5de08d7537c02b8 ] [Why] If the DPCD caps specifies a PSR version newer than PSR_VERSION_1 then we fallback to using PSR_VERSION_1 in amdgpu_dm_set_psr_caps. This gets overriden with the raw DPCD value in amdgpu_dm_link_setup_psr, which can result in DMCUB hanging if we pass in an unsupported PSR version number. [How] Fix the hang by using link->psr_settings.psr_version directly during amdgpu_dm_link_setup_psr. Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Reviewed-by: Anthony Koo <Anthony.Koo@amd.com> Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com> Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Sasha Levin <sashal@kernel.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.