rust: binder: enable `clippy::ref_as_ptr` lint

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 does not 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 in the Binder Rust driver -- no functional
change intended.

Link: https://rust-lang.github.io/rust-clippy/master/index.html#ref_as_ptr [1]
Assisted-by: Codex:gpt-5
Signed-off-by: Tamir Duberstein <tamird@kernel.org>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Link: https://patch.msgid.link/20260526-binder-strict-provenance-v2-3-a41d89c29bc5@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/android/binder/node.rs b/drivers/android/binder/node.rs
index d710940c3c8f..3d96738dee66 100644
--- a/drivers/android/binder/node.rs
+++ b/drivers/android/binder/node.rs
@@ -21,6 +21,7 @@ use crate::{
 };
 
 use core::mem;
+use core::ptr;
 
 mod wrapper;
 pub(crate) use self::wrapper::CritIncrWrapper;
@@ -321,7 +322,7 @@ impl Node {
     /// An id that is unique across all binder nodes on the system. Used as the key in the
     /// `by_node` map.
     pub(crate) fn global_id(&self) -> usize {
-        (self as *const Node).addr()
+        ptr::from_ref(self).addr()
     }
 
     pub(crate) fn get_id(&self) -> (u64, u64) {