rust: pci: return DevresLt from Bar::into_devres()

Implement ForLt and CovariantForLt for Bar<'static, SIZE> so that
DevresLt can shorten the stored 'static lifetime back to the caller's
borrow lifetime.

CovariantForLt is sound because Bar<'a, SIZE> only holds &'a
Device<Bound>, which is covariant over 'a.

Since DevresLt::new() handles the lifetime transmutation internally,
into_devres() no longer needs an explicit transmute to Bar<'static>.

Add a DevresBar<SIZE> type alias for convenience.

Reviewed-by: Alexandre Courbot <acourbot@nvidia.com>
Link: https://patch.msgid.link/20260626183630.2585057-7-dakr@kernel.org
[ Add default SIZE parameter to DevresBar. - Danilo ]
Signed-off-by: Danilo Krummrich <dakr@kernel.org>

0 files changed, 0 insertions, 0 deletions