From e02b4a18a2f6dffd1e5eb97222092c673b40523d Mon Sep 17 00:00:00 2001
From: Heiko Stuebner <heiko@sntech.de>
Date: Tue, 4 Nov 2014 00:53:43 +0100
Subject: [PATCH] backlight: extend of_find_backlight_by_node stub-check to modules

Commit de3d75dc2311 ("backlight: Use of_find_backlight_by_node stub when
backlight class disabled") did not take into account that the backlight
class can also be compiled as module. Extend the check to prevent
redefinition warnings when the backlight device class is compiled as module.

Reported-by: kbuild test robot
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
---
 include/linux/backlight.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/include/linux/backlight.h b/include/linux/backlight.h
index d9cb644..92b9817 100644
--- a/include/linux/backlight.h
+++ b/include/linux/backlight.h
@@ -157,7 +157,8 @@ struct generic_bl_info {
 	void (*kick_battery)(void);
 };
 
-#if defined(CONFIG_OF) && defined(CONFIG_BACKLIGHT_CLASS_DEVICE)
+#if defined(CONFIG_OF) && (defined(CONFIG_BACKLIGHT_CLASS_DEVICE) || \
+			   defined(CONFIG_BACKLIGHT_CLASS_DEVICE_MODULE))
 struct backlight_device *of_find_backlight_by_node(struct device_node *node);
 #else
 static inline struct backlight_device *
-- 
2.0.1

