Messages in this thread Patch in this message | ![/](/images/icornerl.gif) | | From | Yongqiang Niu <> | Subject | [PATCH v1 08/21] drm/mediatek: check if fb is null | Date | Thu, 20 Aug 2020 14:04:05 +0800 |
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It's possible that state->base.fb is null. Add a check before access its format.
Signed-off-by: Yongqiang Niu <yongqiang.niu@mediatek.com> --- drivers/gpu/drm/mediatek/mtk_disp_ovl.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/mediatek/mtk_disp_ovl.c b/drivers/gpu/drm/mediatek/mtk_disp_ovl.c index 427fe7f..2506803 100644 --- a/drivers/gpu/drm/mediatek/mtk_disp_ovl.c +++ b/drivers/gpu/drm/mediatek/mtk_disp_ovl.c @@ -269,7 +269,7 @@ static void mtk_ovl_layer_config(struct mtk_ddp_comp *comp, unsigned int idx, } con = ovl_fmt_convert(ovl, fmt); - if (state->base.fb->format->has_alpha) + if (state->base.fb && state->base.fb->format->has_alpha) con |= OVL_CON_AEN | OVL_CON_ALPHA; if (pending->rotation & DRM_MODE_REFLECT_Y) { -- 1.8.1.1.dirty | ![\](/images/icornerr.gif) |