[PATCH v9 04/10] rust: num: make Bounded::get const

[Alexandre Courbot <acourbot@nvidia.com>]

There is a need to access the inner value of a `Bounded` in const
context, notably for bitfields and registers. Remove the invariant check
of `Bounded::get`, which allows us to make it const.

Reviewed-by: Gary Guo <gary@garyguo.net>
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
---
 rust/kernel/num/bounded.rs | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/rust/kernel/num/bounded.rs b/rust/kernel/num/bounded.rs
index d28d118abd8e..bbab6bbcb315 100644
--- a/rust/kernel/num/bounded.rs
+++ b/rust/kernel/num/bounded.rs
@@ -379,6 +379,9 @@ pub fn from_expr(expr: T) -> Self {
 
     /// Returns the wrapped value as the backing type.
     ///
+    /// This is similar to the [`Deref`] implementation, but doesn't enforce the size invariant of
+    /// the [`Bounded`], which might produce slightly less optimal code.
+    ///
     /// # Examples
     ///
     /// ```
@@ -387,8 +390,8 @@ pub fn from_expr(expr: T) -> Self {
     /// let v = Bounded::<u32, 4>::new::<7>();
     /// assert_eq!(v.get(), 7u32);
     /// ```
-    pub fn get(self) -> T {
-        *self.deref()
+    pub const fn get(self) -> T {
+        self.0
     }
 
     /// Increases the number of bits usable for `self`.

-- 
2.53.0