[PATCH v8 6/6] rust: enable `clippy::ref_as_ptr` lint

[Benno Lossin]

On Wed Apr 9, 2025 at 4:47 PM CEST, Tamir Duberstein wrote:
> In Rust 1.78.0, Clippy introduced the `ref_as_ptr` lint [1]:
>
>> Using `as` casts may result in silently changing mutability or type.
>
> While this doesn't eliminate unchecked `as` conversions, it makes such
> conversions easier to scrutinize.  It also has the slight benefit of
> removing a degree of freedom on which to bikeshed. Thus apply the
> changes and enable the lint -- no functional change intended.
>
> Link: https://rust-lang.github.io/rust-clippy/master/index.html#ref_as_ptr [1]
> Suggested-by: Benno Lossin <benno.lossin at proton.me>
> Link: https://lore.kernel.org/all/D8PGG7NTWB6U.3SS3A5LN4XWMN@proton.me/
> Signed-off-by: Tamir Duberstein <tamird at gmail.com>

Reviewed-by: Benno Lossin <benno.lossin at proton.me>

---
Cheers,
Benno

> ---
>  Makefile                 |  1 +
>  rust/bindings/lib.rs     |  1 +
>  rust/kernel/device_id.rs |  3 ++-
>  rust/kernel/fs/file.rs   |  3 ++-
>  rust/kernel/str.rs       |  6 ++++--
>  rust/kernel/uaccess.rs   | 10 ++++------
>  rust/uapi/lib.rs         |  1 +
>  7 files changed, 15 insertions(+), 10 deletions(-)