From 9b0cbe064d3d9c64f3a7eb183ab4cd6015ac95f2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Mika=20Lepp=C3=A4nen?= <mika.leppanen@arm.com>
Date: Fri, 15 Jun 2018 14:19:56 +0300
Subject: [PATCH] Disabled STM ethernet driver hardware checksum calculation

No need for driver level hardware IPv4/TCP/UDP/ICMP checksum insertion
since LWIP and nanostack handles those already.

Related to issue: https://github.com/ARMmbed/mbed-os/issues/7227
---
 .../netsocket/emac-drivers/TARGET_STM_EMAC/stm32xx_emac.cpp     | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/features/netsocket/emac-drivers/TARGET_STM_EMAC/stm32xx_emac.cpp b/features/netsocket/emac-drivers/TARGET_STM_EMAC/stm32xx_emac.cpp
index f2d4e3e9d4..2d12be0de3 100644
--- a/features/netsocket/emac-drivers/TARGET_STM_EMAC/stm32xx_emac.cpp
+++ b/features/netsocket/emac-drivers/TARGET_STM_EMAC/stm32xx_emac.cpp
@@ -125,7 +125,7 @@ bool STM32_EMAC::low_level_init_successful()
 #endif
     EthHandle.Init.MACAddr = &MACAddr[0];
     EthHandle.Init.RxMode = ETH_RXINTERRUPT_MODE;
-    EthHandle.Init.ChecksumMode = ETH_CHECKSUM_BY_HARDWARE;
+    EthHandle.Init.ChecksumMode = ETH_CHECKSUM_BY_SOFTWARE;
     EthHandle.Init.MediaInterface = ETH_MEDIA_INTERFACE_RMII;
     HAL_ETH_Init(&EthHandle);