leds: Add warning printks in error paths
Add warning printks if led_trigger_register_simple() fails.
Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
diff --git a/drivers/leds/led-triggers.c b/drivers/leds/led-triggers.c
index 129733f..b2438a0 100644
--- a/drivers/leds/led-triggers.c
+++ b/drivers/leds/led-triggers.c
@@ -183,13 +183,20 @@
void led_trigger_register_simple(const char *name, struct led_trigger **tp)
{
struct led_trigger *trigger;
+ int err;
trigger = kzalloc(sizeof(struct led_trigger), GFP_KERNEL);
if (trigger) {
trigger->name = name;
- led_trigger_register(trigger);
- }
+ err = led_trigger_register(trigger);
+ if (err < 0)
+ printk(KERN_WARNING "LED trigger %s failed to register"
+ " (%d)\n", name, err);
+ } else
+ printk(KERN_WARNING "LED trigger %s failed to register"
+ " (no memory)\n", name);
+
*tp = trigger;
}