From: ruanjinjie <ruanjinjie@xxxxxxxxxx>
[ 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@xxxxxxxxxx>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>
Link: https://patchwork.kernel.org/project/linux-mediatek/patch/20221205095115.2905090-1-ruanjinjie@xxxxxxxxxx/
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
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 dfd5ed15a7f4a..e83b1c406b96a 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
@@ -803,6 +803,8 @@ 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,
--
2.39.2
