From: Heiner Kallweit <hkallwe...@gmail.com> Date: Wed, 23 Sep 2020 21:58:59 +0200
> On 23.09.2020 20:35, Saeed Mahameed wrote: >> Why would a driver detach the device on ndo_stop() ? >> seems like this is the bug you need to be chasing .. >> which driver is doing this ? >> > Some drivers set the device to PCI D3hot at the end of ndo_stop() > to save power (using e.g. Runtime PM). Marking the device as detached > makes clear to to the net core that the device isn't accessible any > longer. That being the case, the problem is that IFF_UP+!present is not a valid netdev state. Is it simply the issue that, upon resume, IFF_UP is marked true before the device is brought out from D3hot state and thus marked as present again?
