samples: rust_dma: separate driver type from driver data

Split DmaSampleDriver into a driver type and a separate DmaSampleData
struct for the driver's bus device private data, using
DmaSampleData<'bound> as the Driver::Data<'bound> associated type.

Store a &'bound pci::Device<Bound> reference instead of an
ARef<pci::Device>, tying the data to the device's bound scope.

This prepares for adding a lifetime parameter to dma::Coherent, which
requires the data type to carry a lifetime.

Reviewed-by: Gary Guo <gary@garyguo.net>
Link: https://patch.msgid.link/20260830193824.471089-4-dakr@kernel.org
Signed-off-by: Danilo Krummrich <dakr@kernel.org>

0 files changed, 0 insertions, 0 deletions