Hi Kevin, On Tue, Sep 13, 2022 at 02:24:27AM +0000, Tian, Kevin wrote: > > I wonder if it would be safe to just treat a pm_runtime_get_sync() > > failure as -ENODEV, since a PM resume() mostly occurs to the IOMMU > > that an IOMMU client/master device is behind, while an iommu_domain > > rarely intervenes. > > Yes, this is a condition preventing the device from being attached by > a domain hence converting -EINVAL to -ENODEV probably makes sense. > But as replied in another we might want to keep other errno's as is. Thanks for the reply and helps. I've sent a new IOMMU series: https://lore.kernel.org/linux-iommu/20220913082448.31120-1-nicolinc@xxxxxxxxxx/ Sorry I forgot to put you in CC, for I plainly copied the send list from the get_maintainer.pl script :( Hope you can still find these emails.