On 2013/7/24 10:04, Yinghai Lu wrote:
> 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.
Ah, yes, thanks for explanation.
Thanks!
Yijing.
>
>
--
Thanks!
Yijing
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