commit 2e4ef3347b4a4eb65c4fd950d94bbd75fed4d798
author Meghana Madhyastha <meghana.madhyastha@gmail.com> Wed Jan 24 16:37:23 2018 +0000
committer Sean Paul <seanpaul@chromium.org> Mon Jan 29 10:34:53 2018 -0500
tree 8288bb24e81e40104fa471aa51e4ea59d4267827
parent c2adda27d202fa8f70a5d6e8b0c12b449c8868b8

video: backlight: Add devres versions of of_find_backlight

Add devm_of_find_backlight and the corresponding release
function because some drivers use devres versions of functions
for acquiring device resources.

Acked-by: Daniel Thompson <daniel.thompson@linaro.org>
Reviewed-by: Noralf Trønnes <noralf@tronnes.org>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Meghana Madhyastha <meghana.madhyastha@gmail.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/021f8fecfa3f374dc5dcb70fb07a6f6b019bea7b.1516810725.git.meghana.madhyastha@gmail.com

include/linux/backlight.h

diff --git a/include/linux/backlight.h b/include/linux/backlight.h
index ddc9bad..2baab6f 100644
--- a/include/linux/backlight.h
+++ b/include/linux/backlight.h
@@ -217,11 +217,18 @@ of_find_backlight_by_node(struct device_node *node)
 
 #if IS_ENABLED(CONFIG_BACKLIGHT_CLASS_DEVICE)
 struct backlight_device *of_find_backlight(struct device *dev);
+struct backlight_device *devm_of_find_backlight(struct device *dev);
 #else
 static inline struct backlight_device *of_find_backlight(struct device *dev)
 {
 	return NULL;
 }
+
+static inline struct backlight_device *
+devm_of_find_backlight(struct device *dev)
+{
+	return NULL;
+}
 #endif
 
 #endif