linux-kernel - Re: [PATCH v15 01/13] PCI: kirin: Reorganize the PHY logic inside the driver

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Date:   Thu, 4 Nov 2021 16:48:00 -0500
From:   Bjorn Helgaas <helgaas@...nel.org>
To:     Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
Cc:     Lorenzo Pieralisi <lorenzo.pieralisi@....com>, linuxarm@...wei.com,
        mauro.chehab@...wei.com,
        Krzysztof Wilczyński <kw@...ux.com>,
        Binghui Wang <wangbinghui@...ilicon.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Rob Herring <robh@...nel.org>,
        Xiaowei Song <songxiaowei@...ilicon.com>,
        linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org,
        Kishon Vijay Abraham I <kishon@...com>
Subject: Re: [PATCH v15 01/13] PCI: kirin: Reorganize the PHY logic inside
 the driver

On Thu, Oct 21, 2021 at 11:45:08AM +0100, Mauro Carvalho Chehab wrote:
> The pcie-kirin PCIe driver contains internally a PHY interface for
> Kirin 960.
> 
> As the next patches will add support for using an external PHY
> driver, reorganize the driver in a way that the PHY part
> will be self-contained.
> 
> This could be moved to a separate PHY driver, but a change
> like that would mean a non-backward-compatible DT schema
> change.
> 
> Cc: Kishon Vijay Abraham I <kishon@...com>
> Acked-by: Xiaowei Song <songxiaowei@...ilicon.com>
> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>

> +static int hi3660_pcie_phy_init(struct platform_device *pdev,
> +				struct kirin_pcie *pcie)
> +{
> +	struct device *dev = &pdev->dev;
> +	struct hi3660_pcie_phy *phy;
> +	int ret;
> +
> +	phy = devm_kzalloc(dev, sizeof(*phy), GFP_KERNEL);
> +	if (!phy)
> +		return -ENOMEM;
> +
> +	pcie->phy_priv = phy;
> +	phy->dev = dev;
> +
> +	/* registers */
> +	pdev = container_of(dev, struct platform_device, dev);

Is there something missing here?  "pdev" isn't referenced below.
Noticed by Krzysztof.

> +	ret = hi3660_pcie_phy_get_clk(phy);
> +	if (ret)
> +		return ret;
> +
> +	return hi3660_pcie_phy_get_resource(phy);
> +}