Re: [PATCH v7 7/7] rust: enable `clippy::ref_as_ptr` lint

diff --git a/rust/kernel/str.rs b/rust/kernel/str.rs
index 40034f77fc2f..6233af50bab7 100644
--- a/rust/kernel/str.rs
+++ b/rust/kernel/str.rs

@@ -29,7 +29,7 @@ pub const fn is_empty(&self) -> bool {
     #[inline]
     pub const fn from_bytes(bytes: &[u8]) -> &Self {
         // SAFETY: `BStr` is transparent to `[u8]`.
-        unsafe { &*(bytes as *const [u8] as *const BStr) }
+        unsafe { &*(core::mem::transmute::<*const [u8], *const Self>(bytes)) }

     }
 
     /// Strip a prefix from `self`. Delegates to [`slice::strip_prefix`].

@@ -290,7 +290,7 @@ pub const fn from_bytes_with_nul(bytes: &[u8]) -> Result<&Self, CStrConvertError
     #[inline]
     pub unsafe fn from_bytes_with_nul_unchecked_mut(bytes: &mut [u8]) -> &mut CStr {
         // SAFETY: Properties of `bytes` guaranteed by the safety precondition.
-        unsafe { &mut *(bytes as *mut [u8] as *mut CStr) }
+        unsafe { &mut *(core::mem::transmute::<*mut [u8], *mut Self>(bytes)) }
     }
 
     /// Returns a C pointer to the string.

diff --git a/rust/kernel/uaccess.rs b/rust/kernel/uaccess.rs
index 80a9782b1c6e..c042b1fe499e 100644
--- a/rust/kernel/uaccess.rs
+++ b/rust/kernel/uaccess.rs

@@ -242,7 +242,7 @@ pub fn read_raw(&mut self, out: &mut [MaybeUninit<u8>]) -> Result {
     pub fn read_slice(&mut self, out: &mut [u8]) -> Result {
         // SAFETY: The types are compatible and `read_raw` doesn't write uninitialized bytes to
         // `out`.
-        let out = unsafe { &mut *(out as *mut [u8] as *mut [MaybeUninit<u8>]) };
+        let out = unsafe { &mut *(core::mem::transmute::<*mut [u8], *mut [MaybeUninit<u8>]>(out)) };