Add `#[must_use]` to all futures

2 files changed, 2 insertions, 0 deletions

diff --git a/embassy-stm32/src/dma/mod.rs b/embassy-stm32/src/dma/mod.rs
index f5a82fb7a..0030bd575 100644
--- a/embassy-stm32/src/dma/mod.rs
+++ b/embassy-stm32/src/dma/mod.rs
@@ -273,6 +273,7 @@ mod transfers {
         Transfer::new(channel)
     }
 
+    #[must_use = "futures do nothing unless you `.await` or poll them"]
     pub(crate) struct Transfer<'a, C: Channel> {
         channel: PeripheralRef<'a, C>,
     }
diff --git a/embassy-stm32/src/exti.rs b/embassy-stm32/src/exti.rs
index c9c3ef62a..e1ce09a49 100644
--- a/embassy-stm32/src/exti.rs
+++ b/embassy-stm32/src/exti.rs
@@ -198,6 +198,7 @@ mod eha {
     }
 }
 
+#[must_use = "futures do nothing unless you `.await` or poll them"]
 struct ExtiInputFuture<'a> {
     pin: u8,
     phantom: PhantomData<&'a mut AnyPin>,