On Sat, Jun 28, 2025 at 09:53:06AM +0200, Benno Lossin wrote: > Hmm @Danilo, do you have any use-cases in mind or already done? There may be other use-cases, but the one that I could forsee is very specific: A Registration type that carries additional reference-counted data, where the Registration should be released exactly when the device is unbound, independent of the lifetime of the data. Obviously, this implies that the ForeignOwnable is an Arc. With KBox, Release and Drop are pretty much identical, so using devres::release() instead, is much simpler and hence what we do for all simple class device registrations. Besides that, the use-case described above can also be covered by Devres with the pin-init rework, by having the Registration embed a Devres<Inner>, which is what irq::Registration does and I also do in the MiscDeviceRegistration patches. Hence, I already considered dropping this patch -- and I think we should do this for now.
