From cea57f51c1e748319de5f13db385a9821f711589 Mon Sep 17 00:00:00 2001
From: Peter Barker <pbarker@barker.dropbear.id.au>
Date: Sat, 8 Jan 2022 21:56:52 +1100
Subject: [PATCH] AP_HAL_Empty: add HAL_UART_STATS_ENABLED to disable stats
 gathering

---
 libraries/AP_HAL_Empty/UARTDriver.cpp | 2 ++
 libraries/AP_HAL_Empty/UARTDriver.h   | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/libraries/AP_HAL_Empty/UARTDriver.cpp b/libraries/AP_HAL_Empty/UARTDriver.cpp
index ab12fca5ee..9241248a84 100644
--- a/libraries/AP_HAL_Empty/UARTDriver.cpp
+++ b/libraries/AP_HAL_Empty/UARTDriver.cpp
@@ -30,7 +30,9 @@ size_t Empty::UARTDriver::write(const uint8_t *buffer, size_t size)
     return n;
 }
 
+#if HAL_UART_STATS_ENABLED
 void Empty::UARTDriver::uart_info(ExpandingString &str)
 {
     str.printf("EMPTY\n");
 }
+#endif
diff --git a/libraries/AP_HAL_Empty/UARTDriver.h b/libraries/AP_HAL_Empty/UARTDriver.h
index 65515bd3ff..8aad82b197 100644
--- a/libraries/AP_HAL_Empty/UARTDriver.h
+++ b/libraries/AP_HAL_Empty/UARTDriver.h
@@ -24,6 +24,8 @@ public:
     size_t write(uint8_t c) override;
     size_t write(const uint8_t *buffer, size_t size) override;
 
+#if HAL_UART_STATS_ENABLED
     // request information on uart I/O for one uart
     void uart_info(ExpandingString &str) override;
+#endif
 };