Messages in this thread Patch in this message | | | Subject | [PATCH] leds: add new field to led_classdev struct to save activation state | From | Shuah Khan <> | Date | Thu, 19 Apr 2012 21:48:08 -0600 |
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This patch adds 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.
From 3765101a5ffe32edd68a71bafca2d6d262cf2399 Mon Sep 17 00:00:00 2001 From: Shuah Khan <shuahkhan@gmail.com> Date: Thu, 19 Apr 2012 20:44:15 -0600 Subject: [PATCH] leds: add new field to led_classdev struct to save activation state
Signed-off-by: Shuah Khan <shuahkhan@gmail.com> --- include/linux/leds.h | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/include/linux/leds.h b/include/linux/leds.h index 5884def..39eee41 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 }; -- 1.7.5.4
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