From: ruanjinjie ruanjinjie@huawei.com
[ Upstream commit 5bf1e3bd7da625ccf9a22c8cb7d65271e6e47f4c ]
As the devm_kcalloc may return NULL, the return value needs to be checked to avoid NULL poineter dereference.
Fixes: 31c5558dae05 ("drm/mediatek: Refactor plane init") Signed-off-by: ruanjinjie ruanjinjie@huawei.com Reviewed-by: AngeloGioacchino Del Regno angelogioacchino.delregno@collabora.com Link: https://patchwork.kernel.org/project/linux-mediatek/patch/20221205095115.290... Signed-off-by: Chun-Kuang Hu chunkuang.hu@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- 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 112615817dcbe..5071f1263216b 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c @@ -945,6 +945,8 @@ int mtk_drm_crtc_create(struct drm_device *drm_dev,
mtk_crtc->planes = devm_kcalloc(dev, num_comp_planes, sizeof(struct drm_plane), GFP_KERNEL); + if (!mtk_crtc->planes) + return -ENOMEM;
for (i = 0; i < mtk_crtc->ddp_comp_nr; i++) { ret = mtk_drm_crtc_init_comp_planes(drm_dev, mtk_crtc, i,