linux-kernel - Re: [PATCH v8 03/11] PCI: imx6: Fix missing call to phy_power

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Message-ID: <20240807023544.GB3412@thinkpad>
Date: Wed, 7 Aug 2024 08:05:44 +0530
From: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
To: Frank Li <Frank.Li@....com>
Cc: Richard Zhu <hongxing.zhu@....com>,
	Lucas Stach <l.stach@...gutronix.de>,
	Lorenzo Pieralisi <lpieralisi@...nel.org>,
	Krzysztof Wilczyński <kw@...ux.com>,
	Rob Herring <robh@...nel.org>, 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>,
	Philipp Zabel <p.zabel@...gutronix.de>,
	Liam Girdwood <lgirdwood@...il.com>,
	Mark Brown <broonie@...nel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	Conor Dooley <conor+dt@...nel.org>, linux-pci@...r.kernel.org,
	imx@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org, bpf@...r.kernel.org,
	devicetree@...r.kernel.org
Subject: Re: [PATCH v8 03/11] PCI: imx6: Fix missing call to phy_power_off()
 in error handling

On Mon, Jul 29, 2024 at 04:18:10PM -0400, Frank Li wrote:
> Fix missing call to phy_power_off() in the error path of
> imx6_pcie_host_init(). Remove unnecessary check for imx6_pcie->phy as the
> PHY API already handles NULL pointers.
> 
> Fixes: cbcf8722b523 ("phy: freescale: imx8m-pcie: Fix the wrong order of phy_init() and phy_power_on()")
> Signed-off-by: Frank Li <Frank.Li@....com>

Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>

- Mani

> ---
>  drivers/pci/controller/dwc/pci-imx6.c | 7 ++++---
>  1 file changed, 4 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c
> index 3b739aa7c5166..eaec471c46234 100644
> --- a/drivers/pci/controller/dwc/pci-imx6.c
> +++ b/drivers/pci/controller/dwc/pci-imx6.c
> @@ -953,7 +953,7 @@ static int imx6_pcie_host_init(struct dw_pcie_rp *pp)
>  		ret = phy_power_on(imx6_pcie->phy);
>  		if (ret) {
>  			dev_err(dev, "waiting for PHY ready timeout!\n");
> -			goto err_phy_off;
> +			goto err_phy_exit;
>  		}
>  	}
>  
> @@ -968,8 +968,9 @@ static int imx6_pcie_host_init(struct dw_pcie_rp *pp)
>  	return 0;
>  
>  err_phy_off:
> -	if (imx6_pcie->phy)
> -		phy_exit(imx6_pcie->phy);
> +	phy_power_off(imx6_pcie->phy);
> +err_phy_exit:
> +	phy_exit(imx6_pcie->phy);
>  err_clk_disable:
>  	imx6_pcie_clk_disable(imx6_pcie);
>  err_reg_disable:
> 
> -- 
> 2.34.1
> 

-- 
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