From bab0c1dfc7a6377a48cb7dc9b43932708f8d2426 Mon Sep 17 00:00:00 2001
From: Andrew Tridgell <andrew@tridgell.net>
Date: Sat, 31 Jul 2021 14:57:29 +1000
Subject: [PATCH] HAL_ChibiOS: fixed build for single FDCAN G4 boards

---
 libraries/AP_HAL_ChibiOS/CANFDIface.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libraries/AP_HAL_ChibiOS/CANFDIface.cpp b/libraries/AP_HAL_ChibiOS/CANFDIface.cpp
index 9a1a29c6e7..2fc4a1b4f8 100644
--- a/libraries/AP_HAL_ChibiOS/CANFDIface.cpp
+++ b/libraries/AP_HAL_ChibiOS/CANFDIface.cpp
@@ -574,10 +574,12 @@ bool CANIface::init(const uint32_t bitrate, const OperatingMode mode)
             nvicEnableVector(FDCAN1_IT0_IRQn, CORTEX_MAX_KERNEL_PRIORITY);
             nvicEnableVector(FDCAN1_IT1_IRQn, CORTEX_MAX_KERNEL_PRIORITY);
             break;
+#ifdef FDCAN2_IT0_IRQn
         case 1:
             nvicEnableVector(FDCAN2_IT0_IRQn, CORTEX_MAX_KERNEL_PRIORITY);
             nvicEnableVector(FDCAN2_IT1_IRQn, CORTEX_MAX_KERNEL_PRIORITY);
             break;
+#endif
 #ifdef FDCAN3_IT0_IRQn
         case 2:
             nvicEnableVector(FDCAN3_IT0_IRQn, CORTEX_MAX_KERNEL_PRIORITY);