drm/amd/display: Fix incorrect return of vblank enable on unconfigured crtc

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commit b3656b355b upstream.

[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 cb57b8cdb0)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

This commit is contained in:

Ivan Lipski 2025-09-17 11:00:02 -04:00 • committed by Greg Kroah-Hartman

parent 3daad56d20

commit ab574f8833

1 changed files with 7 additions and 3 deletions

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drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crtc.c

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