linux-kernel - [PATCH] backlight: use of_find_backlight_by_node stub when backlight class disabled

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Date:	Wed, 29 Oct 2014 01:20:06 +0100
From:	Heiko Stübner <heiko@...ech.de>
To:	Jingoo Han <jg1.han@...sung.com>, Bryan Wu <cooloney@...il.com>,
	Lee Jones <lee.jones@...aro.org>
Cc:	linux-kernel@...r.kernel.org
Subject: [PATCH] backlight: use of_find_backlight_by_node stub when backlight class disabled

Drivers may want to search for an optional backlight even when the backlight
class is disabled. In this case the linker would miss the function referenced
in the backlight header.

Therefore use the stub function also when the backlight class is disabled.

Signed-off-by: Heiko Stuebner <heiko@...ech.de>
---
 include/linux/backlight.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/backlight.h b/include/linux/backlight.h
index adb14a8..d9cb644 100644
--- a/include/linux/backlight.h
+++ b/include/linux/backlight.h
@@ -157,7 +157,7 @@ struct generic_bl_info {
 	void (*kick_battery)(void);
 };
 
-#ifdef CONFIG_OF
+#if defined(CONFIG_OF) && defined(CONFIG_BACKLIGHT_CLASS_DEVICE)
 struct backlight_device *of_find_backlight_by_node(struct device_node *node);
 #else
 static inline struct backlight_device *
-- 
2.0.1


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