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| author | Danilo Krummrich <dakr@kernel.org> | 2026-05-25 22:21:02 +0200 |
|---|---|---|
| committer | Danilo Krummrich <dakr@kernel.org> | 2026-05-27 16:23:51 +0200 |
| commit | a3f09f8e47c4262510c979b384d6f85d376d91f5 (patch) | |
| tree | 398990265c978b944cad927de5d75dfd7476a334 /samples | |
| parent | 46f651d88662ef931555cd135f09382af206295a (diff) | |
| download | linux-next-history-a3f09f8e47c4262510c979b384d6f85d376d91f5.tar.gz | |
rust: usb: make Driver trait lifetime-parameterized
Add a 'bound lifetime to the associated Data, changing type Data to type
Data<'bound>.
This allows the driver's bus device private data to capture the device /
driver bound lifetime; device resources can be stored directly by
reference rather than requiring Devres.
The probe() and disconnect() callbacks thus gain a 'bound lifetime
parameter on the methods themselves; avoiding a global lifetime on the
trait impl.
Existing drivers set type Data<'bound> = Self, preserving the current
behavior.
Reviewed-by: Alexandre Courbot <acourbot@nvidia.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Eliot Courtney <ecourtney@nvidia.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com>
Link: https://patch.msgid.link/20260525202921.124698-16-dakr@kernel.org
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
Diffstat (limited to 'samples')
| -rw-r--r-- | samples/rust/rust_driver_usb.rs | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/samples/rust/rust_driver_usb.rs b/samples/rust/rust_driver_usb.rs index e900993335e93..02bd5085f9bc7 100644 --- a/samples/rust/rust_driver_usb.rs +++ b/samples/rust/rust_driver_usb.rs @@ -26,21 +26,21 @@ kernel::usb_device_table!( impl usb::Driver for SampleDriver { type IdInfo = (); - type Data = Self; + type Data<'bound> = Self; const ID_TABLE: usb::IdTable<Self::IdInfo> = &USB_TABLE; - fn probe( - intf: &usb::Interface<Core<'_>>, + fn probe<'bound>( + intf: &'bound usb::Interface<Core<'_>>, _id: &usb::DeviceId, - _info: &Self::IdInfo, - ) -> impl PinInit<Self, Error> { + _info: &'bound Self::IdInfo, + ) -> impl PinInit<Self, Error> + 'bound { let dev: &device::Device<Core<'_>> = intf.as_ref(); dev_info!(dev, "Rust USB driver sample probed\n"); Ok(Self { _intf: intf.into() }) } - fn disconnect(intf: &usb::Interface<Core<'_>>, _data: Pin<&Self>) { + fn disconnect<'bound>(intf: &'bound usb::Interface<Core<'_>>, _data: Pin<&Self>) { let dev: &device::Device<Core<'_>> = intf.as_ref(); dev_info!(dev, "Rust USB driver sample disconnected\n"); } |