[PATCH v4] PCI: Support hibmc VGA cards behind a misbehaving HiSilicon bridge

[benh@kernel.crashing.org (Benjamin Herrenschmidt)]

On Fri, 2017-07-14 at 17:03 +0000, Gabriele Paoloni wrote:
> > I'd rather we have no default device until a driver actually picks up
> > though, and then, if we still have no default, use the first driver to
> > pick up.
> 
> Well from my understanding the PCI host controller driver will enumerate
> all the devices in the PCI hierarchy and call pci_device_add() for each of
> them, that in turn will call device_add(), at this stage if there is a
> driver available for the device such driver will probe otherwise it will not.
> 
> Are you suggesting to add the code above in pci_device_add() after device_add()
> and after checking that a driver has been bound for such dev?

I don't like us turning on MEM/IO decoding on a device that has
potentially not been initialized by its driver.

Ben.