leds: mark led_classdev.default_trigger as const

LED classdev core doesn't modify memory pointed by the default_trigger,
so mark it as const and we'll able to pass const char *s without getting
compiler warnings.

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Richard Purdie <rpurdie@rpsys.net>

1 files changed, 1 insertions, 1 deletions

diff --git a/include/linux/leds.h b/include/linux/leds.h
index 519df72e939d..e7a5e89932fe 100644
--- a/include/linux/leds.h
+++ b/include/linux/leds.h
@@ -48,7 +48,7 @@ struct led_classdev {
 
         struct device           *dev;
         struct list_head         node;                  /* LED Device list */
-        char                    *default_trigger;       /* Trigger to use */
+        const char              *default_trigger;       /* Trigger to use */
 
 #ifdef CONFIG_LEDS_TRIGGERS
         /* Protects the trigger data below */