On Wed, May 13, 2015 at 11:16:30AM +1000, Gavin Shan wrote:
>On Mon, May 04, 2015 at 03:07:38PM +0800, Wei Yang wrote:
>
> if (!edev->physfn) {
> pr_warn("%s: EEH dev %04x:%02x:%02x:%01x not for VF\n",
> edev->phb->global_number, pdn->busno,
> PCI_SLOT(pdn->devfn), PCI_FUNC(pdn->devfn));
> return NULL;
> }
>
>>+
>>+ driver = eeh_pcid_get(dev);
>>+ if (driver) {
>>+ eeh_pcid_put(dev);
>>+ if (driver->err_handler)
>>+ return NULL;
>>+ }
>
>dev and driver are NULL for those VFs that have been unplugged. For those
>VFs weren't unplugged, driver and err_handler should be valid. The code
>looks correct. However, for consistence, please use EEH_DEV_DISCONNECTED
>that has been marked to those EEH devices which were unplugged. Do you
>think it would be better?
>
> if (!(dev->flags & EEH_DEV_DISCONNECTED))
> return NULL;
>
Hi, Gavin,
I think this is a nice idea, while this may not work.
We mark the DISCONNECTED flag when remove a PCI device, while before we do the
hot plug we will detach it from the tree and remove this flag in
eeh_pe_detach_dev().
This will leads to the VF not be hot plugged.
--
Richard Yang
Help you, Help me
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