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

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Date:   Thu, 10 Mar 2022 07:41:10 +0000
From:   Hongxing Zhu <hongxing.zhu@....com>
To:     Miaoqian Lin <linmq006@...il.com>,
        Lucas Stach <l.stach@...gutronix.de>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Rob Herring <robh@...nel.org>,
        Krzysztof Wilczy��ski <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>,
        dl-linux-imx <linux-imx@....com>,
        Trent Piepho <tpiepho@...inj.com>,
        "linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH] PCI: imx6: Add missing of_node_put() in imx6_pcie_probe

> -----Original Message-----
> From: Miaoqian Lin <linmq006@...il.com>
> Sent: 2022年3月8日 10:29
> To: Hongxing Zhu <hongxing.zhu@....com>; Lucas Stach
> <l.stach@...gutronix.de>; Lorenzo Pieralisi <lorenzo.pieralisi@....com>; Rob
> Herring <robh@...nel.org>; Krzysztof Wilczy��ski <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>;
> dl-linux-imx <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>

Reviewed-by: Richard Zhu <hongxing.zhu@....com>
Thanks.

Best Regards
Richard Zhu

> ---
>  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