Commit b1d685b6 authored by Yongqiang Niu's avatar Yongqiang Niu Committed by Chun-Kuang Hu
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drm/mediatek: Check if fb is null 



It's possible that state->base.fb is null. Add a check before access its
format.

Fixes: b6b1bb98 ("drm/mediatek: Turn off Alpha bit when plane format has no alpha")
Signed-off-by: default avatarYongqiang Niu <yongqiang.niu@mediatek.com>
Signed-off-by: default avatarChun-Kuang Hu <chunkuang.hu@kernel.org>
parent 5b9576e2

drivers/gpu/drm/mediatek/mtk_disp_ovl.c

+1 −1
Original line number Diff line number Diff line
@@ -291,7 +291,7 @@ void mtk_ovl_layer_config(struct device *dev, 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) {