From f67365a067634b62747c819253fb461624c29568 Mon Sep 17 00:00:00 2001
From: etiennecollin <collin.etienne.contact@gmail.com>
Date: Mon, 25 Aug 2025 21:10:59 +0200
Subject: [PATCH] fix: suspend before reset

This follows the procedure outlined in the STM32U5 reference manual at
page 696.
---
 embassy-stm32/src/dma/gpdma/mod.rs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/embassy-stm32/src/dma/gpdma/mod.rs b/embassy-stm32/src/dma/gpdma/mod.rs
index 752b39416..604db2852 100644
--- a/embassy-stm32/src/dma/gpdma/mod.rs
+++ b/embassy-stm32/src/dma/gpdma/mod.rs
@@ -382,6 +382,9 @@ impl AnyChannel {
         let info = self.info();
         let ch = info.dma.ch(info.num);
 
+        self.request_suspend();
+        while self.is_running() {}
+
         ch.cr().modify(|w| w.set_reset(true));
     }