drm/sti: fix atomic_disable check
authorFabien Dessenne <fabien.dessenne@st.com>
Tue, 6 Sep 2016 07:41:48 +0000 (09:41 +0200)
committerVincent Abriou <vincent.abriou@st.com>
Tue, 20 Sep 2016 09:32:05 +0000 (11:32 +0200)
commit5552aad35d439ad96ae55f0e3db25b6268170259
treebc234eed2644272e8de5a1efdc547cfd97f08624
parent00b517e54f937ae4917ca613e3956e424f7a17cd
drm/sti: fix atomic_disable check

When a drm_plane is being disabled, its ->crtc member is set to NULL
before the .atomic_disable() func is called.
To get the crtc of the plane, read old_state->crtc instead of
drm_plane->crtc

Signed-off-by: Fabien Dessenne <fabien.dessenne@st.com>
Acked-by: Vincent Abriou <vincent.abriou@st.com>
drivers/gpu/drm/sti/sti_cursor.c
drivers/gpu/drm/sti/sti_gdp.c
drivers/gpu/drm/sti/sti_hqvdp.c