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Date:   Mon, 2 Jan 2023 14:56:18 +0100
From:   =?UTF-8?B?Q2zDqW1lbnQgTMOpZ2Vy?= <clement.leger@bootlin.com>
To:     Lizhi Hou <lizhi.hou@amd.com>
Cc:     <linux-pci@vger.kernel.org>, <devicetree@vger.kernel.org>,
        <linux-kernel@vger.kernel.org>, <robh@kernel.org>,
        <frowand.list@gmail.com>, <helgaas@kernel.org>, <max.zhen@amd.com>,
        <sonal.santan@amd.com>, <larry.liu@amd.com>, <brian.xu@amd.com>,
        <stefano.stabellini@xilinx.com>, <trix@redhat.com>,
        "Allan.Nielsen@microchip.com" <Allan.Nielsen@microchip.com>,
        "Horatiu.Vultur@microchip.com" <Horatiu.Vultur@microchip.com>,
        "Steen.Hegelund@microchip.com" <Steen.Hegelund@microchip.com>
Subject: Re: [PATCH V5 2/3] PCI: Create device tree node for selected
 devices
Message-ID: <20230102145618.4b5bace8@fixe.home>
In-Reply-To: <1671125446-57584-3-git-send-email-lizhi.hou@amd.com>
References: <1671125446-57584-1-git-send-email-lizhi.hou@amd.com>
        <1671125446-57584-3-git-send-email-lizhi.hou@amd.com>
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Le Thu, 15 Dec 2022 09:30:45 -0800,
Lizhi Hou <lizhi.hou@amd.com> a =C3=A9crit :

> +};
> +
> +static int of_pci_prop_device_type(struct pci_dev *pdev,
> +				   struct of_changeset *ocs,
> +				   struct device_node *np)
> +{
> +	return of_changeset_add_prop_string(ocs, np, "device_type", "pci");
> +}
> +
> +static int of_pci_prop_address_cells(struct pci_dev *pdev,
> +				     struct of_changeset *ocs,
> +				     struct device_node *np)
> +{
> +	return of_changeset_add_prop_u32(ocs, np, "#address_cells",
> +					 OF_PCI_ADDRESS_CELLS);
> +}
> +
> +static int of_pci_prop_size_cells(struct pci_dev *pdev,
> +				  struct of_changeset *ocs,
> +				  struct device_node *np)
> +{
> +	return of_changeset_add_prop_u32(ocs, np, "#size_cells",
> +					 OF_PCI_SIZE_CELLS);
> +}

Hi Lizhi,

For all these functions, the "pdev" parameter is actually unused.

[snip]

> +
> +static int of_pci_prop_compatible(struct pci_dev *pdev,
> +				  struct of_changeset *ocs,
> +				  struct device_node *np)
> +{
> +	const char *compat_strs[PROP_COMPAT_NUM] =3D { 0 };
> +	int i, ret;
> +
> +	compat_strs[PROP_COMPAT_PCI_VVVV_DDDD] =3D
> +		kasprintf(GFP_KERNEL, "pci%x,%x", pdev->vendor, pdev->device);

Maybe it should be better to use "pci%04x,%04x" to keep the existing
naming.

--=20
Cl=C3=A9ment L=C3=A9ger,
Embedded Linux and Kernel engineer at Bootlin
https://bootlin.com