On Tue, Jan 03, 2023 at 06:12:29PM +0000, Robin Murphy wrote: > > I have a side question, why is the dev_name() of your SMMU set to > > "arm-smmu.0.auto" (determined by PLATFORM_DEVID_AUTO if I'm not mistaken)? > > This is an ACPI-based machine, where platform device discovery and creation > is... different :) > > SMMUs are among those managed by drivers/acpi/arm64/iort.c > > > I'm asking because I would like to study the mechanism through which > > your SMMU platform device get probed, to make sure that it's not > > possible, during shutdown, for both platform_driver :: shutdown() > > and platform_driver :: remove() methods to get called by the driver core. > > This is generally not disallowed, and even possible if the entity who > > registers these platform devices has its ->shutdown() method pointing > > at ->remove(). > > Yikes, I'd very much hope that that's not a thing! Ah, ok. Appears to be fine. Looking at drivers/acpi/arm64/iort.c, it seems that no one is removing those platform devices.
