diff options
| author | Danilo Krummrich <dakr@kernel.org> | 2026-05-25 22:20:51 +0200 |
|---|---|---|
| committer | Danilo Krummrich <dakr@kernel.org> | 2026-05-27 16:22:41 +0200 |
| commit | 7fdffdda630ee61ae0e09ef8f1ace52bbf70e2b0 (patch) | |
| tree | 82bdea83290b72b76d053411b4f571a830172b30 /rust/kernel/io | |
| parent | c8a43666bade4683640dc835f92cd456d29cee55 (diff) | |
rust: driver: decouple driver private data from driver type
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 <acourbot@nvidia.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://patch.msgid.link/20260525202921.124698-5-dakr@kernel.org
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
Diffstat (limited to 'rust/kernel/io')
| -rw-r--r-- | rust/kernel/io/mem.rs | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/rust/kernel/io/mem.rs b/rust/kernel/io/mem.rs index 7dc78d547f7a..e136b676d372 100644 --- a/rust/kernel/io/mem.rs +++ b/rust/kernel/io/mem.rs @@ -62,6 +62,7 @@ impl<'a> IoRequest<'a> { /// /// impl platform::Driver for SampleDriver { /// # type IdInfo = (); + /// # type Data = Self; /// /// fn probe( /// pdev: &platform::Device<Core>, @@ -126,6 +127,7 @@ impl<'a> IoRequest<'a> { /// /// impl platform::Driver for SampleDriver { /// # type IdInfo = (); + /// # type Data = Self; /// /// fn probe( /// pdev: &platform::Device<Core>, |