6.6-stable review patch. If anyone has any objections, please let me know.
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From: Johan Hovold johan@kernel.org
[ Upstream commit 5e49200593f331cd0629b5376fab9192f698e8ef ]
The Mediatek DRM driver allocates private data for components without a platform driver but as the lifetime is tied to each component device, the memory is never freed.
Tie the allocation lifetime to the DRM platform device so that the memory is released on probe failure (e.g. probe deferral) and when the driver is unbound.
Fixes: c0d36de868a6 ("drm/mediatek: Move clk info from struct mtk_ddp_comp to sub driver private data") Cc: stable@vger.kernel.org # 5.12 Cc: CK Hu ck.hu@mediatek.com Signed-off-by: Johan Hovold johan@kernel.org Reviewed-by: AngeloGioacchino Del Regno angelogioacchino.delregno@collabora.com Link: https://patchwork.kernel.org/project/dri-devel/patch/20250923152340.18234-3-... Signed-off-by: Chun-Kuang Hu chunkuang.hu@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c @@ -588,7 +588,7 @@ int mtk_ddp_comp_init(struct device_node type == MTK_DSI) return 0;
- priv = devm_kzalloc(comp->dev, sizeof(*priv), GFP_KERNEL); + priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); if (!priv) return -ENOMEM;