Re: [PATCHv3 0/4] drivers/base: bugfix for supplier<-consumer ordering in device_kset

From: Rafael J. Wysocki
Date: Tue Jul 03 2018 - 10:36:34 EST


On Tuesday, July 3, 2018 8:50:38 AM CEST Pingfan Liu wrote:
> commit 52cdbdd49853 ("driver core: correct device's shutdown order")
> places an assumption of supplier<-consumer order on the process of probe.
> But it turns out to break down the parent <- child order in some scene.
> E.g in pci, a bridge is enabled by pci core, and behind it, the devices
> have been probed. Then comes the bridge's module, which enables extra
> feature(such as hotplug) on this bridge.

So what *exactly* does happen in that case?