stm32/hash: Clear HMAC mode bit when hashing

Running a hash after a hmac would hang, the CR.MODE bit isn't cleared by
INIT.

Test it by running the test twice.

1 files changed, 2 insertions, 0 deletions

diff --git a/embassy-stm32/src/hash/mod.rs b/embassy-stm32/src/hash/mod.rs
index e62151bb5..a4c275242 100644
--- a/embassy-stm32/src/hash/mod.rs
+++ b/embassy-stm32/src/hash/mod.rs
@@ -198,6 +198,8 @@ impl<'d, T: Instance, M: Mode> Hash<'d, T, M> {
             if key.len() > 64 {
                 T::regs().cr().modify(|w| w.set_lkey(true));
             }
+        } else {
+            T::regs().cr().modify(|w| w.set_mode(false));
         }
 
         T::regs().cr().modify(|w| w.set_init(true));