On Tue, Jul 23, 2013 at 7:01 PM, Yijing Wang <wangyijing@xxxxxxxxxx> wrote:
> Hi Yinghai,
> It seems to have the the same problem in acpiphp,
>
> diable_device(..):
>
> while ((pdev = dev_in_slot(slot))) {
> pci_stop_and_remove_bus_device(pdev);
> pci_dev_put(pdev);
> }
>
>
> static struct pci_dev *dev_in_slot(struct acpiphp_slot *slot)
> {
> struct pci_bus *bus = slot->bridge->pci_bus;
> struct pci_dev *dev;
> struct pci_dev *ret = NULL;
>
> down_read(&pci_bus_sem);
> list_for_each_entry(dev, &bus->devices, bus_list)
> if (PCI_SLOT(dev->devfn) == slot->device) {
> ret = pci_dev_get(dev);
> break;
> }
> up_read(&pci_bus_sem);
>
acpiphp is ok.
dev_in_slot will restart from bus->devices again every time.
Thanks
Yinghai
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