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[Why&How] Return -EINVAL when userspace asks us to enable vblank on a crtc that is not yet enabled. Suggested-by: Aurabindo Pillai <aurabindo.pillai@amd.com> Reviewed-by: Aurabindo Pillai <aurabindo.pillai@amd.com> Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/1856 Signed-off-by: Ivan Lipski <ivan.lipski@amd.com> Signed-off-by: Wayne Lin <wayne.lin@amd.com> Tested-by: Dan Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> (cherry picked from commit cb57b8cdb072dc37723b6906da1c37ff9cbc2da4) Cc: stable@vger.kernel.org |
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