From: Javier Carrasco Date: Mon, 24 Jun 2024 16:43:48 +0000 (+0200) Subject: drm/mediatek: ovl_adaptor: Use scoped variant of for_each_child_of_node() X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=6a4ae7f095aae36ec3211fb6efd1a10b35b0fb8e;p=users%2Fjedix%2Flinux-maple.git drm/mediatek: ovl_adaptor: Use scoped variant of for_each_child_of_node() In order to avoid potential memory leaks if new error paths are added without a call to of_node_put(), use for_each_child_of_node_scoped() instead of for_each_child_of_node(). The former automatically decrements the refcount when the child goes out of scope, which removes the need for explicit calls to of_node_put(). Signed-off-by: Javier Carrasco Reviewed-by: CK Hu Link: https://patchwork.kernel.org/project/dri-devel/patch/20240624-mtk_disp_ovl_adaptor_scoped-v1-3-9fa1e074d881@gmail.com/ Signed-off-by: Chun-Kuang Hu --- diff --git a/drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c b/drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c index 436c1af4c992..c6768210b08b 100644 --- a/drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c +++ b/drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c @@ -493,12 +493,12 @@ static int compare_of(struct device *dev, void *data) static int ovl_adaptor_comp_init(struct device *dev, struct component_match **match) { struct mtk_disp_ovl_adaptor *priv = dev_get_drvdata(dev); - struct device_node *node, *parent; + struct device_node *parent; struct platform_device *comp_pdev; parent = dev->parent->parent->of_node->parent; - for_each_child_of_node(parent, node) { + for_each_child_of_node_scoped(parent, node) { const struct of_device_id *of_id; enum mtk_ovl_adaptor_comp_type type; int id; @@ -522,10 +522,8 @@ static int ovl_adaptor_comp_init(struct device *dev, struct component_match **ma } comp_pdev = of_find_device_by_node(node); - if (!comp_pdev) { - of_node_put(node); + if (!comp_pdev) return -EPROBE_DEFER; - } priv->ovl_adaptor_comp[id] = &comp_pdev->dev;