Path: csiph.com!optima2.xanadu-bbs.net!xanadu-bbs.net!2.us.feeder.erje.net!feeder.erje.net!1.eu.feeder.erje.net!newsfeed.datemas.de!weretis.net!feeder4.news.weretis.net!storethat.news.telefonica.de!telefonica.de!news.panservice.it!bofh.it!news.nic.it!robomod From: Kishon Vijay Abraham I Newsgroups: linux.kernel Subject: [PATCH 6/9] phy: miphy28lp: add missing of_node_put Date: Tue, 15 Dec 2015 11:10:02 +0100 Message-ID: References: X-Original-To: X-Mailer: git-send-email 1.7.9.5 MIME-Version: 1.0 Content-Type: text/plain Sender: robomod@news.nic.it List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Approved: robomod@news.nic.it Lines: 90 Organization: linux.* mail to news gateway X-Original-Cc: , X-Original-Date: Tue, 15 Dec 2015 15:34:21 +0530 X-Original-Message-ID: <1450173864-12708-7-git-send-email-kishon@ti.com> X-Original-References: <1450173864-12708-1-git-send-email-kishon@ti.com> X-Original-Sender: linux-kernel-owner@vger.kernel.org Xref: csiph.com linux.kernel:1292003 From: Julia Lawall for_each_child_of_node performs an of_node_get on each iteration, so a return from the middle of the loop requires an of_node_put. A simplified version of the semantic patch that finds this problem is as follows (http://coccinelle.lip6.fr): // @@ expression root,e; local idexpression child; @@ for_each_child_of_node(root, child) { ... when != of_node_put(child) when != e = child ( return child; | * return ...; ) ... } // Signed-off-by: Julia Lawall Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/phy-miphy28lp.c | 16 +++++++++++----- 1 file changed, 11 insertions(+), 5 deletions(-) diff --git a/drivers/phy/phy-miphy28lp.c b/drivers/phy/phy-miphy28lp.c index c47b56b..3acd2a1 100644 --- a/drivers/phy/phy-miphy28lp.c +++ b/drivers/phy/phy-miphy28lp.c @@ -1226,15 +1226,18 @@ static int miphy28lp_probe(struct platform_device *pdev) miphy_phy = devm_kzalloc(&pdev->dev, sizeof(*miphy_phy), GFP_KERNEL); - if (!miphy_phy) - return -ENOMEM; + if (!miphy_phy) { + ret = -ENOMEM; + goto put_child; + } miphy_dev->phys[port] = miphy_phy; phy = devm_phy_create(&pdev->dev, child, &miphy28lp_ops); if (IS_ERR(phy)) { dev_err(&pdev->dev, "failed to create PHY\n"); - return PTR_ERR(phy); + ret = PTR_ERR(phy); + goto put_child; } miphy_dev->phys[port]->phy = phy; @@ -1242,11 +1245,11 @@ static int miphy28lp_probe(struct platform_device *pdev) ret = miphy28lp_of_probe(child, miphy_phy); if (ret) - return ret; + goto put_child; ret = miphy28lp_probe_resets(child, miphy_dev->phys[port]); if (ret) - return ret; + goto put_child; phy_set_drvdata(phy, miphy_dev->phys[port]); port++; @@ -1255,6 +1258,9 @@ static int miphy28lp_probe(struct platform_device *pdev) provider = devm_of_phy_provider_register(&pdev->dev, miphy28lp_xlate); return PTR_ERR_OR_ZERO(provider); +put_child: + of_node_put(child); + return ret; } static const struct of_device_id miphy28lp_of_match[] = { -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/