From 08aa1ebf17c8d97b759e75f3f847cb7aa8ae2ba1 Mon Sep 17 00:00:00 2001
From: Lorenz Meier <lm@inf.ethz.ch>
Date: Sun, 15 Feb 2015 16:18:21 +0100
Subject: [PATCH] LSM303D: Update comment why we report as internal always

---
 src/drivers/lsm303d/lsm303d.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/drivers/lsm303d/lsm303d.cpp b/src/drivers/lsm303d/lsm303d.cpp
index 85ad74fdb9..b5f01b942f 100644
--- a/src/drivers/lsm303d/lsm303d.cpp
+++ b/src/drivers/lsm303d/lsm303d.cpp
@@ -1067,7 +1067,10 @@ LSM303D::mag_ioctl(struct file *filp, int cmd, unsigned long arg)
 		return mag_self_test();
 
 	case MAGIOCGEXTERNAL:
-		/* no external mag board yet */
+		/* Even if this sensor is on the "external" SPI bus
+		 * it is still fixed to the autopilot assembly,
+		 * so always return 0.
+		 */
 		return 0;
 
 	default: