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drm/mediatek: Check return value of mtk_drm_ddp_comp_for_plane.

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The mtk_drm_ddp_comp_for_plane can return NULL, but the usage doesn't
check for it. Add check for it.

Fixes: d6b53f6835 ("drm/mediatek: Add helper to get component for a plane")
Signed-off-by: Pi-Hsun Shih <[email protected]>
Signed-off-by: CK Hu <[email protected]>
This commit is contained in:
Pi-Hsun Shih
2019-12-09 09:29:05 +08:00
committed by CK Hu
parent e42617b825
commit 13b0ba33d7
1 changed files with 9 additions and 4 deletions
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drivers/gpu/drm/mediatek/mtk_drm_crtc.c
+9 -4
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@@ -310,7 +310,9 @@ static int mtk_crtc_ddp_hw_init(struct mtk_drm_crtc *mtk_crtc)
plane_state = to_mtk_plane_state(plane->state);
comp = mtk_drm_ddp_comp_for_plane(crtc, plane, &local_layer);
mtk_ddp_comp_layer_config(comp, local_layer, plane_state);
if (comp)
mtk_ddp_comp_layer_config(comp, local_layer,
plane_state);
}
return 0;
@@ -386,8 +388,9 @@ static void mtk_crtc_ddp_config(struct drm_crtc *crtc)
comp = mtk_drm_ddp_comp_for_plane(crtc, plane,
&local_layer);
mtk_ddp_comp_layer_config(comp, local_layer,
plane_state);
if (comp)
mtk_ddp_comp_layer_config(comp, local_layer,
plane_state);
plane_state->pending.config = false;
}
mtk_crtc->pending_planes = false;
@@ -401,7 +404,9 @@ int mtk_drm_crtc_plane_check(struct drm_crtc *crtc, struct drm_plane *plane,
struct mtk_ddp_comp *comp;
comp = mtk_drm_ddp_comp_for_plane(crtc, plane, &local_layer);
return mtk_ddp_comp_layer_check(comp, local_layer, state);
if (comp)
return mtk_ddp_comp_layer_check(comp, local_layer, state);
return 0;
}
static void mtk_drm_crtc_atomic_enable(struct drm_crtc *crtc,