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drm/atomic: fix potential null ptr on plane enable

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When a plane is being enabled, plane->crtc has not been set yet.  Use
plane->state->crtc.

Signed-off-by: Rob Clark <robdclark@gmail.com>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Rob Clark 2014-12-08 10:45:43 -05:00 committed by Daniel Vetter
parent 4e0cd68115
commit 4b08eae52f
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/drm_atomic_helper.c
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@ -61,7 +61,7 @@ drm_atomic_helper_plane_changed(struct drm_atomic_state *state,
struct drm_crtc_state *crtc_state;
if (plane->state->crtc) {
crtc_state = state->crtc_states[drm_crtc_index(plane->crtc)];
crtc_state = state->crtc_states[drm_crtc_index(plane->state->crtc)];
if (WARN_ON(!crtc_state))
return;