[PATCH] drm/mediatek: check for memory allocation failure
From: CK Hu <hidden>
Date: 2017-06-13 07:45:28
Also in:
dri-devel, kernel-janitors, linux-mediatek, lkml
Hi, Christophe: Applied to my branch mediatek-drm-next-4.13, thanks. Regards, CK On Fri, 2017-06-09 at 21:27 +0200, Christophe JAILLET wrote:
quoted hunk ↗ jump to hunk
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 <redacted> --- drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 2 ++ 1 file changed, 2 insertions(+)diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c index 6582e1f56d37..cb32c9369f3a 100644 --- 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_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)) {