[PATCH 2/6] rust: binder: transmute transaction data

[Tamir Duberstein]

`BinderTransactionData` is a transparent wrapper around
`binder_transaction_data`. Use a transmute to view the transaction data in
`BinderTransactionDataSecctx` through that wrapper, matching the safety
argument at the conversion site and avoiding the raw pointer round trip.

Signed-off-by: Tamir Duberstein <tamird@xxxxxxxxxx>
---
 drivers/android/binder/defs.rs | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/android/binder/defs.rs b/drivers/android/binder/defs.rs
index 33f51b4139c7..fd0ef3f9ebd1 100644
--- a/drivers/android/binder/defs.rs
+++ b/drivers/android/binder/defs.rs
@@ -164,10 +164,7 @@ impl BinderTransactionDataSecctx {
     /// View the inner data as wrapped in `BinderTransactionData`.
     pub(crate) fn tr_data(&mut self) -> &mut BinderTransactionData {
         // SAFETY: Transparent wrapper is safe to transmute.
-        unsafe {
-            &mut *(&mut self.transaction_data as *mut uapi::binder_transaction_data
-                as *mut BinderTransactionData)
-        }
+        unsafe { core::mem::transmute(&mut self.transaction_data) }
     }
 }
 

-- 
2.54.0