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drm/mediatek: mtk_drm_crtc: Add checks for devm_kcalloc

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[ Upstream commit 5bf1e3bd7da625ccf9a22c8cb7d65271e6e47f4c ]

As the devm_kcalloc may return NULL, the return value needs to be checked
to avoid NULL poineter dereference.

Fixes: 31c5558dae ("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/20221205095115.2905090-1-ruanjinjie@huawei.com/
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
ruanjinjie
2022-12-05 17:51:15 +08:00
committed by Greg Kroah-Hartman
parent 3a50d86696
commit b64b6dff15
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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@@ -803,6 +803,8 @@ int mtk_drm_crtc_create(struct drm_device *drm_dev,
mtk_crtc->planes = devm_kcalloc(dev, num_comp_planes, mtk_crtc->planes = devm_kcalloc(dev, num_comp_planes,
sizeof(struct drm_plane), GFP_KERNEL); sizeof(struct drm_plane), GFP_KERNEL);
if (!mtk_crtc->planes)
return -ENOMEM;
for (i = 0; i < mtk_crtc->ddp_comp_nr; i++) { for (i = 0; i < mtk_crtc->ddp_comp_nr; i++) {
ret = mtk_drm_crtc_init_comp_planes(drm_dev, mtk_crtc, i, ret = mtk_drm_crtc_init_comp_planes(drm_dev, mtk_crtc, i,