diff --git a/[refs] b/[refs] index a3775788eb09..5b5729940141 100644 --- a/[refs] +++ b/[refs] @@ -1,2 +1,2 @@ --- -refs/heads/master: 5cce0105c8d07d3bd5f578c77d273e1a1e09f157 +refs/heads/master: a8df7b1ab70bfd6f261fa5e96985fca638299acc diff --git a/trunk/drivers/leds/led-triggers.c b/trunk/drivers/leds/led-triggers.c index 262eb4193710..a4fa4bf02d53 100644 --- a/trunk/drivers/leds/led-triggers.c +++ b/trunk/drivers/leds/led-triggers.c @@ -166,6 +166,19 @@ void led_trigger_set_default(struct led_classdev *led_cdev) } EXPORT_SYMBOL_GPL(led_trigger_set_default); +void led_trigger_rename_static(const char *name, struct led_trigger *trig) +{ + /* new name must be on a temporary string to prevent races */ + BUG_ON(name == trig->name); + + down_write(&triggers_list_lock); + /* this assumes that trig->name was originaly allocated to + * non constant storage */ + strcpy((char *)trig->name, name); + up_write(&triggers_list_lock); +} +EXPORT_SYMBOL_GPL(led_trigger_rename_static); + /* LED Trigger Interface */ int led_trigger_register(struct led_trigger *trig) diff --git a/trunk/include/linux/leds.h b/trunk/include/linux/leds.h index 6e53bb31c220..8107592cfc41 100644 --- a/trunk/include/linux/leds.h +++ b/trunk/include/linux/leds.h @@ -139,6 +139,24 @@ extern void led_blink_set_oneshot(struct led_classdev *led_cdev, extern void led_set_brightness(struct led_classdev *led_cdev, enum led_brightness brightness); +/** + * led_trigger_rename_static - rename a trigger + * @name: the new trigger name + * @trig: the LED trigger to rename + * + * Change a LED trigger name by copying the string passed in + * name into current trigger name, which MUST be large + * enough for the new string. + * + * Note that name must NOT point to the same string used + * during LED registration, as that could lead to races. + * + * This is meant to be used on triggers with statically + * allocated name. + */ +extern void led_trigger_rename_static(const char *name, + struct led_trigger *trig); + /* * LED Triggers */