From: Christophe Jaillet <christophe.jaillet@wanadoo.fr>
Date: Fri, 9 Jun 2017 21:27:12 +0200
Subject: drm/mediatek: check for memory allocation failure
Git-commit: 4a3bfb5c24306aa129c0de32e5d1ffb553a60a7c
Patch-mainline: v4.13-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166
If 'devm_kmalloc_array' returns NULL, we should return -ENOMEM as already
done a few lines above instead of deferencing a NULL pointer a few lines
below.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com>
Signed-off-by: CK Hu <ck.hu@mediatek.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 2 ++
1 file changed, 2 insertions(+)
--- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
@@ -559,6 +559,8 @@ int mtk_drm_crtc_create(struct drm_devic
mtk_crtc->ddp_comp = devm_kmalloc_array(dev, mtk_crtc->ddp_comp_nr,
sizeof(*mtk_crtc->ddp_comp),
GFP_KERNEL);
+ if (!mtk_crtc->ddp_comp)
+ return -ENOMEM;
mtk_crtc->mutex = mtk_disp_mutex_get(priv->mutex_dev, pipe);
if (IS_ERR(mtk_crtc->mutex)) {