Hi Thomas,
On jeu., mars 29 2018, Thomas Petazzoni <thomas.petazzoni@xxxxxxxxxxx> wrote:
> From: Victor Gu <xigu@xxxxxxxxxxx>
>
> The PCI configuration space read/write functions were special casing
causing?
else I don't get it
> the situation where PCI_SLOT(devfn) != 0, and returned
> PCIBIOS_DEVICE_NOT_FOUND in this case.
>
> However, while this is what is intended for the root bus, it is not
> intended for the child busses, as it prevents discovering devices with
buses
> PCI_SLOT(x) != 0. Therefore, we return PCIBIOS_DEVICE_NOT_FOUND only
> if we're on the root bus.
>
Gregory
--
Gregory Clement, Bootlin (formerly Free Electrons)
Embedded Linux and Kernel engineering
http://bootlin.com