From 53759e259da43fae0e5322d227ffce60857f2828 Mon Sep 17 00:00:00 2001
From: Martin Kelly <martin@martingkelly.com>
Date: Thu, 25 Oct 2018 19:38:09 -0700
Subject: [PATCH] iio: magnetometer: add clarifying comment

Add a comment clarifying better when to use <device_name> vs
<device_name>-magn in compatibility strings.

Signed-off-by: Martin Kelly <martin@martingkelly.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
---
 drivers/iio/magnetometer/st_magn_spi.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/iio/magnetometer/st_magn_spi.c b/drivers/iio/magnetometer/st_magn_spi.c
index 7b7cd08fcc32..15bb09267098 100644
--- a/drivers/iio/magnetometer/st_magn_spi.c
+++ b/drivers/iio/magnetometer/st_magn_spi.c
@@ -23,6 +23,8 @@
  * For new single-chip sensors use <device_name> as compatible string.
  * For old single-chip devices keep <device_name>-magn to maintain
  * compatibility
+ * For multi-chip devices, use <device_name>-magn to distinguish which
+ * capability is being used
  */
 static const struct of_device_id st_magn_of_match[] = {
 	{
-- 
2.30.2