From a556a44a57a52ccef1ca618affd6b7bcd3238c53 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Beat=20K=C3=BCng?= <beat-kueng@gmx.net>
Date: Mon, 30 Mar 2020 16:49:20 +0200
Subject: [PATCH] i2c_spi_buses: print an error if a driver does not pass the
 I2C address

---
 platforms/common/i2c_spi_buses.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/platforms/common/i2c_spi_buses.cpp b/platforms/common/i2c_spi_buses.cpp
index 1e46ab6907..8bfb2378fa 100644
--- a/platforms/common/i2c_spi_buses.cpp
+++ b/platforms/common/i2c_spi_buses.cpp
@@ -476,6 +476,10 @@ int I2CSPIDriverBase::module_start(const BusCLIArguments &cli, BusInstanceIterat
 			continue;
 		}
 
+		if (cli.i2c_address != 0 && instance->_i2c_address == 0) {
+			PX4_ERR("Bug: driver %s does not pass the I2C address to I2CSPIDriverBase", instance->ItemName());
+		}
+
 		iterator.addInstance(instance);
 		started = true;