From d5f003eed575cd603bc7b881b2ac0ec117ba4440 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Beat=20K=C3=BCng?= <beat-kueng@gmx.net>
Date: Mon, 21 Oct 2019 12:06:06 +0200
Subject: [PATCH] px4io: add missing lock()/unlock() in ioctl

---
 src/drivers/px4io/px4io.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/drivers/px4io/px4io.cpp b/src/drivers/px4io/px4io.cpp
index 4a6dae2498..4f7592709d 100644
--- a/src/drivers/px4io/px4io.cpp
+++ b/src/drivers/px4io/px4io.cpp
@@ -40,6 +40,7 @@
 
 #include <px4_config.h>
 #include <px4_tasks.h>
+#include <px4_sem.hpp>
 
 #include <sys/types.h>
 #include <stdint.h>
@@ -2333,6 +2334,7 @@ PX4IO::print_status(bool extended_status)
 int
 PX4IO::ioctl(file *filep, int cmd, unsigned long arg)
 {
+	SmartLock lock_guard(_lock);
 	int ret = OK;
 
 	/* regular ioctl? */