[RFC PATCH v4 2/3] rust: DmaFence: Implement Deref for FenceContext

[Philipp Stanner <phasta@kernel.org>]

A FenceContext carries data, which the user should be able to access.

Implement Deref for FenceContext.

Signed-off-by: Philipp Stanner <phasta@kernel.org>
---
 rust/kernel/dma_buf/dma_fence.rs | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/rust/kernel/dma_buf/dma_fence.rs b/rust/kernel/dma_buf/dma_fence.rs
index eef2b9e93f35..0028124e6aa6 100644
--- a/rust/kernel/dma_buf/dma_fence.rs
+++ b/rust/kernel/dma_buf/dma_fence.rs
@@ -86,6 +86,14 @@ pub struct FenceContext<T: FenceContextOps + Send + Sync> {
     data: T,
 }
 
+impl<T: Send + Sync + FenceContextOps> Deref for FenceContext<T> {
+    type Target = T;
+
+    fn deref(&self) -> &Self::Target {
+        &self.data
+    }
+}
+
 impl<'a, T: Send + Sync + FenceContextOps> FenceContext<T> {
     // This can later be extended as a vtable in case other parties need support
     // for the more "exotic" callbacks.
-- 
2.55.0