Re: [PATCH v5 13/18] pci: introduce pci_find_the_only_child()

[Vladimir Sementsov-Ogievskiy]

On 02.03.23 00:09, Michael S. Tsirkin wrote:
> On Thu, Feb 16, 2023 at 09:03:51PM +0300, Vladimir Sementsov-Ogievskiy wrote:
> > To be used in further patch to identify the device hot-plugged into
> > pcie-root-port.
> >
> > Signed-off-by: Vladimir Sementsov-Ogievskiy<vsementsov@yandex-team.ru>
> > Reviewed-by: Anton Kuchin<antonkuchin@yandex-team.ru>
> Wait a second does this work for multifunction devices correctly?

I thought about that and I'm just lost:)

Could several (multifunction?) devices be plugged into one pcie-root-port 
device?

Same question for SHPC slots. For example, shpc_free_devices_in_slot() looks 
like we can have several devices in one slot..
On the other hand, in shpc_reset() we have construction 
shpc->sec_bus->devices[PCI_DEVFN(SHPC_IDX_TO_PCI(i), 0)] to access the device 
in slot. The only one device.

--
Best regards,
Vladimir