linux-kernel - [PATCH] PCI: imx6: Add missing of_node_put() in imx6_pcie

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Date:   Tue,  8 Mar 2022 02:29:29 +0000
From:   Miaoqian Lin <linmq006@...il.com>
To:     Richard Zhu <hongxing.zhu@....com>,
        Lucas Stach <l.stach@...gutronix.de>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Rob Herring <robh@...nel.org>,
        Krzysztof Wilczyński <kw@...ux.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        NXP Linux Team <linux-imx@....com>,
        Trent Piepho <tpiepho@...inj.com>, linux-pci@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc:     linmq006@...il.com
Subject: [PATCH] PCI: imx6: Add missing of_node_put() in imx6_pcie_probe

The device_node pointer is returned by of_parse_phandle()  with refcount
incremented. We should use of_node_put() on it when done.

Fixes: 1df82ec46600 ("PCI: imx: Add workaround for e10728, IMX7d PCIe PLL failure")
Signed-off-by: Miaoqian Lin <linmq006@...il.com>
---
 drivers/pci/controller/dwc/pci-imx6.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c
index 6974bd5aa116..bcc338ab6c11 100644
--- a/drivers/pci/controller/dwc/pci-imx6.c
+++ b/drivers/pci/controller/dwc/pci-imx6.c
@@ -1050,6 +1050,7 @@ static int imx6_pcie_probe(struct platform_device *pdev)
 		struct resource res;
 
 		ret = of_address_to_resource(np, 0, &res);
+		of_node_put(np);
 		if (ret) {
 			dev_err(dev, "Unable to map PCIe PHY\n");
 			return ret;
-- 
2.17.1