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Shankari Anand 4b12c421a3 rust: miscdevice: clarify invariant for MiscDeviceRegistration

[ Upstream commit b9ff1c2a26 ]

Reword and expand the invariant documentation for `MiscDeviceRegistration`
to clarify what it means for the inner device to be "registered".
It expands to explain:
- `inner` points to a `miscdevice` registered via `misc_register`.
- This registration stays valid for the entire lifetime of the object.
- Deregistration is guaranteed on `Drop`, via `misc_deregister`.

Reported-by: Benno Lossin <lossin@kernel.org>
Closes: https://github.com/Rust-for-Linux/linux/issues/1168
Fixes: f893691e74 ("rust: miscdevice: add base miscdevice abstraction")
Signed-off-by: Shankari Anand <shankari.ak0208@gmail.com>
Link: https://lore.kernel.org/r/20250626104520.563036-1-shankari.ak0208@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2025-08-15 12:16:19 +02:00

bindings

rust: completion: implement initial abstraction

2025-07-06 11:04:25 +02:00

helpers

rust: completion: implement initial abstraction

2025-07-06 11:04:25 +02:00

kernel

rust: miscdevice: clarify invariant for MiscDeviceRegistration

2025-08-15 12:16:19 +02:00

macros

rust: use #[used(compiler)] to fix build and modpost with Rust >= 1.89.0