linux-kernel - Re: [PATCH v13 4/6] PCI/DPC: Unify and plumb error handling into DPC

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Message-ID: <20180409232957.GF6283@localhost.localdomain>
Date:   Mon, 9 Apr 2018 17:29:57 -0600
From:   Keith Busch <keith.busch@...el.com>
To:     Oza Pawandeep <poza@...eaurora.org>
Cc:     Bjorn Helgaas <bhelgaas@...gle.com>,
        Philippe Ombredanne <pombredanne@...b.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Kate Stewart <kstewart@...uxfoundation.org>,
        linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org,
        Dongdong Liu <liudongdong3@...wei.com>,
        Wei Zhang <wzhang@...com>, Sinan Kaya <okaya@...eaurora.org>,
        Timur Tabi <timur@...eaurora.org>
Subject: Re: [PATCH v13 4/6] PCI/DPC: Unify and plumb error handling into DPC

On Mon, Apr 09, 2018 at 10:41:52AM -0400, Oza Pawandeep wrote:
> +static int find_dpc_dev_iter(struct device *device, void *data)
> +{
> +	struct pcie_port_service_driver *service_driver;
> +	struct device **dev;
> +
> +	dev = (struct device **) data;
> +
> +	if (device->bus == &pcie_port_bus_type && device->driver) {
> +		service_driver = to_service_driver(device->driver);
> +		if (service_driver->service == PCIE_PORT_SERVICE_DPC) {
> +			*dev = device;
> +			return 1;
> +		}
> +	}
> +
> +	return 0;
> +}
> +
> +static struct device *pci_find_dpc_dev(struct pci_dev *pdev)
> +{
> +	struct device *dev = NULL;
> +
> +	device_for_each_child(&pdev->dev, &dev, find_dpc_dev_iter);
> +
> +	return dev;
> +}

The only caller of this doesn't seem to care to use struct device. This
should probably just extract struct dpc_dev directly from in here.