Re: [PATCH v2, part 1 3/9] PCI: Convert alloc_pci_dev(void) to pci_alloc_dev(bus) instead

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On Mon, May 13, 2013 at 9:08 AM, Jiang Liu <liuj97@xxxxxxxxx> wrote:
> From: Gu Zheng <guz.fnst@xxxxxxxxxxxxxx>
> diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
> index 4f0bc0a..bc075a3 100644
> --- a/drivers/pci/probe.c
> +++ b/drivers/pci/probe.c
> @@ -1131,6 +1131,7 @@ static void pci_release_dev(struct device *dev)
>         struct pci_dev *pci_dev;
>
>         pci_dev = to_pci_dev(dev);
> +       pci_bus_put(pci_dev->bus);
>         pci_release_capabilities(pci_dev);
>         pci_release_of_node(pci_dev);
>         kfree(pci_dev);
> @@ -1269,11 +1270,10 @@ static struct pci_dev *pci_scan_device(struct pci_bus *bus, int devfn)
>         if (!pci_bus_read_dev_vendor_id(bus, devfn, &l, 60*1000))
>                 return NULL;
>
> -       dev = alloc_pci_dev();
> +       dev = pci_alloc_dev(bus);
>         if (!dev)
>                 return NULL;
>
> -       dev->bus = bus;
>         dev->devfn = devfn;
>         dev->vendor = l & 0xffff;
>         dev->device = (l >> 16) & 0xffff;

in pci_setup_device() fail path, it release the ref to that bus.

Yinghai
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