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f2c7ca8901
If the crtc is being switched on or off then the semantics of computing the timestampe of the next vblank is somewhat ill-defined. And indeed, the code splats with a warning in the timestamp computation code. Specifically it hits the check to make sure that atomic drivers have full set up the timing constants in the drm_vblank structure, and that's just not the case before the crtc is actually on. For robustness it seems best to just not set deadlines for modesets. v2: Also skip on inactive crtc (Ville) Link: https://lore.kernel.org/dri-devel/dfc21f18-7e1e-48f0-c05a-d659b9c90b91@linaro.org/ Fixes: d39e48ca80c0 ("drm/atomic-helper: Set fence deadline for vblank") Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Cc: Rob Clark <robdclark@chromium.org> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Cc: Maxime Ripard <mripard@kernel.org> Cc: Thomas Zimmermann <tzimmermann@suse.de> Reported-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Tested-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> # test patch only Cc: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Reviewed-by: Rob Clark <robdclark@gmail.com> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230405133105.947834-1-daniel.vetter@ffwll.ch
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.