mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2026-06-21 15:43:21 +02:00
Danilo Krummrich
be31fcf5af
Move the post_unbind_rust callback before devres_release_all() in device_unbind_cleanup(). With drvdata() removed, the driver's bus device private data is only accessible by the owning driver itself. It is hence safe to drop the driver's bus device private data before devres actions are released. This reordering is the key enabler for Higher-Ranked Lifetime Types (HRT) in Rust device drivers -- it allows driver structs to hold direct references to devres-managed resources, because the bus device private data (and with it all such references) is guaranteed to be dropped while the underlying devres resources are still alive. Without this change, devres resources would be freed first, leaving the driver's bus device private data with dangling references during its destructor. Reviewed-by: Alexandre Courbot <acourbot@nvidia.com> Reviewed-by: Gary Guo <gary@garyguo.net> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://patch.msgid.link/20260525202921.124698-6-dakr@kernel.org Signed-off-by: Danilo Krummrich <dakr@kernel.org>