drm: require a non_NULL drm_crtc.primary

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If a CRTC is missing a legacy primary plane pointer, a lot of things
will be broken for user-space: fbdev stops working and the entire legacy
uAPI stops working.

Require all drivers to populate drm_crtc.primary to prevent these
issues. Warn if it's NULL.

Signed-off-by: Simon Ser <contact@emersion.fr>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: Pekka Paalanen <pekka.paalanen@collabora.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201211184634.74534-3-contact@emersion.fr

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Simon Ser 2020-12-11 19:46:33 +01:00

parent 6d84576fb2

commit 2200736a0c

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2 changed files with 4 additions and 1 deletions

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3

drivers/gpu/drm/drm_mode_config.c

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2

drivers/gpu/drm/drm_plane.c

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