Re: [PATCH 0/7] rust: treewide: remove driver unbind callbacks

[Gary Guo]

On Thu Nov 12, 2026 at 12:52 AM GMT, Danilo Krummrich wrote:
> The driver model uses native Rust lifetimes, allowing driver data to
> retain device resources and a bound device reference for use in its
> destructor. Separate teardown callbacks are therefore no longer needed.
>
> Remove unbind() from the PCI, platform, auxiliary, serdev and I2C driver
> traits, and disconnect() from the USB driver trait. Move the affected
> sample teardown into destructors and update the driver documentation.

unbind() has the `Device<Core>` state, which the destructor won't be able to
get. Are we sure we won't need it in the future?

Best,
Gary

>
> Danilo Krummrich (7):
>   rust: pci: remove the unbind() callback
>   rust: platform: remove the unbind() callback
>   rust: auxiliary: remove the unbind() callback
>   rust: serdev: remove the unbind() callback
>   rust: i2c: remove the unbind() callback
>   rust: usb: remove the disconnect() callback
>   rust: driver: document teardown through destructors
>
>  rust/kernel/auxiliary.rs        | 34 ++++-----------------------
>  rust/kernel/driver.rs           | 18 ++++++---------
>  rust/kernel/i2c.rs              | 31 ++++---------------------
>  rust/kernel/pci.rs              | 34 ++++-----------------------
>  rust/kernel/platform.rs         | 34 ++++-----------------------
>  rust/kernel/serdev.rs           | 41 ++++-----------------------------
>  rust/kernel/usb.rs              | 36 +++++------------------------
>  samples/rust/rust_driver_i2c.rs | 18 ++++++++++-----
>  samples/rust/rust_driver_pci.rs |  7 ++----
>  samples/rust/rust_driver_usb.rs | 11 +++++----
>  samples/rust/rust_i2c_client.rs | 12 +++++-----
>  11 files changed, 59 insertions(+), 217 deletions(-)
>
>
> base-commit: de7625abe4e92f1fb0047ed5f163b2ecaba77e50