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drm/mediatek: check for memory allocation failure

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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>
This commit is contained in:
Christophe Jaillet 2017-06-09 21:27:12 +02:00 committed by CK Hu
parent afd89636f1
commit 4a3bfb5c24
1 changed files with 2 additions and 0 deletions
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2
drivers/gpu/drm/mediatek/mtk_drm_crtc.c
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@ -559,6 +559,8 @@ int mtk_drm_crtc_create(struct drm_device *drm_dev,
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)) {