kernel/linux.git/samples/rust/rust_i2c_client.rs, branch v7.2-rc1

rust: platform: make Driver trait lifetime-parameterized

2026-05-27T14:23:31+00:00

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 unbind() 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. Acked-by: Uwe Kleine-König Reviewed-by: Alexandre Courbot Reviewed-by: Greg Kroah-Hartman Reviewed-by: Gary Guo Link: https://patch.msgid.link/20260525202921.124698-14-dakr@kernel.org Signed-off-by: Danilo Krummrich

rust: device: make Core and CoreInternal lifetime-parameterized

2026-05-27T14:22:42+00:00

Device references in probe callbacks are scoped to the callback, not the full binding duration. Add a lifetime parameter to Core and CoreInternal to accurately represent this in the type system. Suggested-by: Gary Guo Reviewed-by: Greg Kroah-Hartman Reviewed-by: Alexandre Courbot Reviewed-by: Eliot Courtney Reviewed-by: Gary Guo Link: https://patch.msgid.link/20260525202921.124698-12-dakr@kernel.org Signed-off-by: Danilo Krummrich

rust: driver: decouple driver private data from driver type

2026-05-27T14:22:41+00:00

Add a type Data<'bound> associated type to all bus driver traits, decoupling the driver's bus device private data type from the driver struct itself. In the context of adding a 'bound lifetime, making this an associated type has the advantage that it allows us to avoid a driver trait global lifetime and it avoids the need for ForLt for bus device private data; both of which make the subsequent implementation by buses much simpler. All existing drivers and doc examples set type Data = Self to preserve the current behavior. Reviewed-by: Alexandre Courbot Reviewed-by: Gary Guo Reviewed-by: Greg Kroah-Hartman Link: https://patch.msgid.link/20260525202921.124698-5-dakr@kernel.org Signed-off-by: Danilo Krummrich

samples: rust: i2c: replace `kernel::c_str!` with C-Strings

2026-01-19T00:13:23+00:00

C-String literals were added in Rust 1.77. Replace instances of `kernel::c_str!` with C-String literals where possible. Signed-off-by: Tamir Duberstein Acked-by: Igor Korotin Reviewed-by: Daniel Almeida Link: https://patch.msgid.link/20251222-cstr-i2c-v1-2-df1c258d4615@gmail.com Signed-off-by: Miguel Ojeda

samples: rust: add Rust I2C client registration sample

2025-11-17T21:31:41+00:00

Add a new `rust_i2c_client` sample, showing how to create a new i2c client using `i2c::Registration` Acked-by: Wolfram Sang Signed-off-by: Igor Korotin Link: https://patch.msgid.link/20251116162210.171542-1-igor.korotin.linux@gmail.com [ * Remove dependency to I2C_CHARDEV, depend on I2C=y. * Remove unnecessary impl Drop for SampleDriver. * Rename i2c::Registration, import Devres. * Fixup module description. * Add new source file to MAINTAINERS. - Danilo ] Signed-off-by: Danilo Krummrich