From 2b46a0fddede86778378cc930bed6d836fff6a97 Mon Sep 17 00:00:00 2001
From: Anthony Merlino <anthony@vergeaero.com>
Date: Mon, 12 Apr 2021 15:14:10 -0400
Subject: [PATCH] stm32h7: Adds guards around stm32_iocompensation.

---
 arch/arm/src/stm32h7/stm32_gpio.c | 2 ++
 arch/arm/src/stm32h7/stm32_gpio.h | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/arch/arm/src/stm32h7/stm32_gpio.c b/arch/arm/src/stm32h7/stm32_gpio.c
index b1974bc7571..f2da8fdcdb0 100644
--- a/arch/arm/src/stm32h7/stm32_gpio.c
+++ b/arch/arm/src/stm32h7/stm32_gpio.c
@@ -472,6 +472,7 @@ bool stm32_gpioread(uint32_t pinset)
  *
  ****************************************************************************/
 
+#ifdef CONFIG_STM32H7_SYSCFG_IOCOMPENSATION
 void stm32_iocompensation(void)
 {
   /* Enable I/O Compensation.  Writing '1' to the CMPCR power-down bit
@@ -486,5 +487,6 @@ void stm32_iocompensation(void)
     {
     }
 }
+#endif
 
 #endif /* CONFIG_STM32H7_STM32H7X3XX || CONFIG_STM32H7_STM32H7X7XX */
diff --git a/arch/arm/src/stm32h7/stm32_gpio.h b/arch/arm/src/stm32h7/stm32_gpio.h
index 4750f18fc5f..eaa39e9fe74 100644
--- a/arch/arm/src/stm32h7/stm32_gpio.h
+++ b/arch/arm/src/stm32h7/stm32_gpio.h
@@ -348,7 +348,9 @@ bool stm32_gpioread(uint32_t pinset);
  *
  ****************************************************************************/
 
+#ifdef CONFIG_STM32H7_SYSCFG_IOCOMPENSATION
 void stm32_iocompensation(void);
+#endif
 
 /****************************************************************************
  * Name: stm32_gpiosetevent