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authorHeiner Kallweit <hkallweit1@gmail.com>2016-01-02 01:36:41 +0100
committerJacek Anaszewski <j.anaszewski@samsung.com>2016-01-04 09:57:40 +0100
commit9534cc31dda2bb129480ce2db92bf7bc1ef470ed (patch)
tree7db0ea367e477eccad2f0a3fbb38df2fe783040e /drivers/leds
parent1259efaab84fbc0a307477e0d2734793aa556814 (diff)
downloadlinux-9534cc31dda2bb129480ce2db92bf7bc1ef470ed.tar.bz2
leds: core: add managed version of led_trigger_register
Complementing devm_led_classdev_register add a managed version of led_trigger_register. I omit a managed version of led_classdev_unregister as the equivalent devm_led_classdev_unregister isn't used in the kernel as of today. Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
Diffstat (limited to 'drivers/leds')
-rw-r--r--drivers/leds/led-triggers.c28
1 files changed, 28 insertions, 0 deletions
diff --git a/drivers/leds/led-triggers.c b/drivers/leds/led-triggers.c
index e8b1120f486d..e1e933424ac9 100644
--- a/drivers/leds/led-triggers.c
+++ b/drivers/leds/led-triggers.c
@@ -249,6 +249,34 @@ void led_trigger_unregister(struct led_trigger *trig)
}
EXPORT_SYMBOL_GPL(led_trigger_unregister);
+static void devm_led_trigger_release(struct device *dev, void *res)
+{
+ led_trigger_unregister(*(struct led_trigger **)res);
+}
+
+int devm_led_trigger_register(struct device *dev,
+ struct led_trigger *trig)
+{
+ struct led_trigger **dr;
+ int rc;
+
+ dr = devres_alloc(devm_led_trigger_release, sizeof(*dr),
+ GFP_KERNEL);
+ if (!dr)
+ return -ENOMEM;
+
+ *dr = trig;
+
+ rc = led_trigger_register(trig);
+ if (rc)
+ devres_free(dr);
+ else
+ devres_add(dev, dr);
+
+ return rc;
+}
+EXPORT_SYMBOL_GPL(devm_led_trigger_register);
+
/* Simple LED Tigger Interface */
void led_trigger_event(struct led_trigger *trig,