From 1c5a954b244104ece7b3d4d0cea43b2b9f05ce40 Mon Sep 17 00:00:00 2001
From: Andrew Tridgell <andrew@tridgell.net>
Date: Mon, 4 Apr 2022 14:57:18 +1000
Subject: [PATCH] HAL_ChibiOS: incorrect class of class in uart TX timeout

need to call chEvtGetAndClearEventsI() as we are in a system lock
state
---
 libraries/AP_HAL_ChibiOS/UARTDriver.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libraries/AP_HAL_ChibiOS/UARTDriver.cpp b/libraries/AP_HAL_ChibiOS/UARTDriver.cpp
index edbea11471..ba47a65ad4 100644
--- a/libraries/AP_HAL_ChibiOS/UARTDriver.cpp
+++ b/libraries/AP_HAL_ChibiOS/UARTDriver.cpp
@@ -1021,7 +1021,7 @@ void UARTDriver::write_pending_bytes_DMA(uint32_t n)
             if (tx_len > 0) {
                 _last_write_completed_us = AP_HAL::micros();
             }
-            chEvtGetAndClearEvents(EVT_TRANSMIT_DMA_COMPLETE);
+            chEvtGetAndClearEventsI(EVT_TRANSMIT_DMA_COMPLETE);
             chSysUnlock();
         }
         // clean up pending locks