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| author |   Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl> | 2021-01-10 03:11:42 +0100 |
|---|---|---|
| committer |   Alex Deucher <alexander.deucher@amd.com> | 2021-01-11 16:20:15 -0500 |
| commit | a5e92ef3c3fd46320d4e293bdec0cdd4b80a6e0f (patch) | |
| tree | f65a7e7efbc734b8114a69b99fa8886cf8333905 /drivers/gpu/drm/drm_plane.c | |
| parent | drm/ttm: Fix address passed to dma_mapping_error() in ttm_pool_map() (diff) | |
| download | linux-dev-a5e92ef3c3fd46320d4e293bdec0cdd4b80a6e0f.tar.xz linux-dev-a5e92ef3c3fd46320d4e293bdec0cdd4b80a6e0f.zip | |
drm: Check actual format for legacy pageflip.
With modifiers one can actually have different format_info structs
for the same format, which now matters for AMDGPU since we convert
implicit modifiers to explicit modifiers with multiple planes.
I checked other drivers and it doesn't look like they end up triggering
this case so I think this is safe to relax.
Signed-off-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Zhan Liu <zhan.liu@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Fixes: 816853f9dc40 ("drm/amd/display: Set new format info for converted metadata.")
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210110021142.28221-1-bas@basnieuwenhuizen.nl
Diffstat (limited to 'drivers/gpu/drm/drm_plane.c')
| -rw-r--r-- | drivers/gpu/drm/drm_plane.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/gpu/drm/drm_plane.c b/drivers/gpu/drm/drm_plane.c index e6231947f987..a0cb746bcb0a 100644 --- a/drivers/gpu/drm/drm_plane.c +++ b/drivers/gpu/drm/drm_plane.c @@ -1163,7 +1163,14 @@ retry: if (ret) goto out; - if (old_fb->format != fb->format) { + /* + * Only check the FOURCC format code, excluding modifiers. This is + * enough for all legacy drivers. Atomic drivers have their own + * checks in their ->atomic_check implementation, which will + * return -EINVAL if any hw or driver constraint is violated due + * to modifier changes. + */ + if (old_fb->format->format != fb->format->format) { DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n"); ret = -EINVAL; goto out; |