rust: scatterlist: return u32 from SGEntry::dma_len()

`SGEntry::dma_len()` returns `ResourceSize`, but the length of a DMA
segment is not the size of a resource. The C side stores it as an
`unsigned int` (`dma_length` in `struct scatterlist`), the helper
returns `unsigned int`, and a single segment is bounded by the
device's `max_segment_size`, which is an `unsigned int` as well. The
method only widens the value to `resource_size_t`.

Return `u32`, which is what the binding already produces, and drop the
`.into()` along with its `clippy::useless_conversion` allow.

Tyr widens the length to `u64`, which is now a real conversion on
every architecture, so drop its `useless_conversion` allow too.
nova-core converts it to `usize` through `FromSafeCast`, which already
covers `u32`, so it needs no change.

Suggested-by: Danilo Krummrich <dakr@kernel.org>
Link: https://lore.kernel.org/r/DLNPXJ4WPH4L.2MBUGV1TAESYY@kernel.org
Signed-off-by: Lorenzo Delgado <lnsdev@proton.me>
Link: https://patch.msgid.link/20260927-resource-size-newtype-v4-1-447a08af23fb@proton.me
Signed-off-by: Danilo Krummrich <dakr@kernel.org>

0 files changed, 0 insertions, 0 deletions