On 2014/1/7 16:04, Dongsheng Wang wrote:
> From: Wang Dongsheng <dongsheng.wang@xxxxxxxxxxxxx>
>
> the root port bus->self always NULL, so put root port pci device
> into root port bus->self.
>
> Signed-off-by: Wang Dongsheng <dongsheng.wang@xxxxxxxxxxxxx>
>
> diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
> index 38e403d..7f2d1ab 100644
> --- a/drivers/pci/probe.c
> +++ b/drivers/pci/probe.c
> @@ -1472,6 +1472,9 @@ int pci_scan_slot(struct pci_bus *bus, int devfn)
> if (!dev->is_added)
> nr++;
>
> + if (pci_pcie_type(dev) == PCI_EXP_TYPE_ROOT_PORT)
> + bus->self = dev;
In this case, bus is the pci root bus I think, so why set bus->self = root port ?
"bus->self" should pointer to the pci device that bridge out this bus.
> +
> for (fn = next_fn(bus, dev, 0); fn > 0; fn = next_fn(bus, dev, fn)) {
> dev = pci_scan_single_device(bus, devfn + fn);
> if (dev) {
>
--
Thanks!
Yijing
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