7b948a2a - rust: pci: fix unrestricted &mut pci::Device

Fri, 14 Mar 2025 16:00:00 +0000

rust: pci: fix unrestricted &mut pci::DeviceAs by now, pci::Device is implemented as: #[derive(Clone)] pub struct Device(ARef);This may be convenient, but has the implication that drivers can calldevice methods that require a mutable reference concurrently at anypoint of time.Instead define pci::Device as pub struct Device( Opaque, PhantomData, );and manually implement the AlwaysRefCounted trait.With this we can implement methods that should only be called frombus callbacks (such as probe()) for pci::Device. Consequently, wemake this type accessible in bus callbacks only.Arbitrary references taken by the driver are still of typeARef and hence don't provide access to methods that arereserved for bus callbacks.Fixes: 1bd8b6b2c5d3 ("rust: pci: add basic PCI device / driver abstractions")Reviewed-by: Benno Lossin Signed-off-by: Danilo Krummrich Acked-by: Boqun Feng Link: https://lore.kernel.org/r/20250314160932.100165-4-dakr@kernel.orgSigned-off-by: Greg Kroah-Hartman List of files: /linux-6.15/samples/rust/rust_driver_pci.rs

9901adda - samples: rust: add Rust dma test sample driver

Mon, 17 Mar 2025 18:00:00 +0000

samples: rust: add Rust dma test sample driverAdd a simple driver to exercise the basics of the Rust DMAcoherent allocator bindings.Suggested-by: Danilo Krummrich Signed-off-by: Abdiel Janulgue Acked-by: Danilo Krummrich Link: https://lore.kernel.org/r/20250317185345.2608976-4-abdiel.janulgue@gmail.com[ Renamed Kconfig symbol and moved it up. Migrated to the new `authors` key in `module!`. Fixed module name in description and typo in commit message. - Miguel ]Signed-off-by: Miguel Ojeda List of files: /linux-6.15/samples/rust/Kconfig/linux-6.15/samples/rust/Makefile

Changes in rust

7b948a2a - rust: pci: fix unrestricted &mut pci::Device

9901adda - samples: rust: add Rust dma test sample driver