Re: [Xen-devel] [PATCH] xen: add bridge check

["Zhang, Yang Z" <yang.z.zhang@xxxxxxxxx>]

Hi konrad,
Any comments with this patch?

best regards
yang

> -----Original Message-----
> From: Zhang, Yang Z
> Sent: Tuesday, May 22, 2012 4:40 PM
> To: xen-devel@xxxxxxxxxxxxxxxxxxx
> Cc: Konrad Rzeszutek Wilk [konrad.wilk@xxxxxxxxxx]
> Subject: [PATCH] xen: add bridge check
> 
> Some SR-IOV devices may use more than one bus number, but there is no real
> bridges
> because that have internal routing mechanism. So need to check whether the
> bridge is
> existing before using it.
> 
> Signed-off-by: Yang Zhang <yang.z.zhang@xxxxxxxxx>
> ---
>  drivers/xen/pci.c |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> 
> diff --git a/drivers/xen/pci.c b/drivers/xen/pci.c
> index b84bf0b..18fff88 100644
> --- a/drivers/xen/pci.c
> +++ b/drivers/xen/pci.c
> @@ -59,7 +59,7 @@ static int xen_add_device(struct device *dev)
> 
>  #ifdef CONFIG_ACPI
>         handle = DEVICE_ACPI_HANDLE(&pci_dev->dev);
> -       if (!handle)
> +       if (!handle && pci_dev->bus->bridge)
>             handle = DEVICE_ACPI_HANDLE(pci_dev->bus->bridge);
>  #ifdef CONFIG_PCI_IOV
>         if (!handle && pci_dev->is_virtfn)

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