Hi, Yongqiang: Yongqiang Niu <yongqiang.niu@xxxxxxxxxxxx> 於 2021年1月11日 週一 下午3:48寫道： > > It's possible that state->base.fb is null. Add a check before access its > format. Applied to mediatek-drm-next [1], thanks. [1] https://git.kernel.org/pub/scm/linux/kernel/git/chunkuang.hu/linux.git/log/?h=mediatek-drm-next Regards, Chun-Kuang. > > Fixes: b6b1bb980ec4 ( drm/mediatek: Turn off Alpha bit when plane format has no alpha) > Signed-off-by: Yongqiang Niu <yongqiang.niu@xxxxxxxxxxxx> > --- > 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 4934bee..8e7f494 100644 > --- a/drivers/gpu/drm/mediatek/mtk_disp_ovl.c > +++ b/drivers/gpu/drm/mediatek/mtk_disp_ovl.c > @@ -279,7 +279,7 @@ 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 > _______________________________________________ > Linux-mediatek mailing list > Linux-mediatek@xxxxxxxxxxxxxxxxxxx > http://lists.infradead.org/mailman/listinfo/linux-mediatek _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
