From b00961824a33aadec4a825eaeccfbe3db8ec7032 Mon Sep 17 00:00:00 2001
From: Shuah Khan <shuahkhan@gmail.com>
Date: Tue, 29 May 2012 15:07:27 -0700
Subject: [PATCH] leds: add new field to led_classdev struct to save activation
state
Add a new field to led_classdev to save activattion state after activate
routine is successful. This saved state is used in deactivate routine to
do cleanup such as removing device files, and free memory allocated during
activation. Currently trigger_data not being null is used for this
purpose.
Existing triggers will need changes to use this new field.
Signed-off-by: Shuah Khan <shuahkhan@gmail.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Bryan Wu <bryan.wu@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
include/linux/leds.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/include/linux/leds.h b/include/linux/leds.h
index 5884def15a248..39eee41d8c6f4 100644
--- a/include/linux/leds.h
+++ b/include/linux/leds.h
@@ -73,6 +73,8 @@ struct led_classdev {
struct led_trigger *trigger;
struct list_head trig_list;
void *trigger_data;
+ /* true if activated - deactivate routine uses it to do cleanup */
+ bool activated;
#endif
};
--
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