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leds: Document the context brightness_set needs

Make sure there is no confusion about the contexts brightness_set
can be called under by documenting it.

Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Richard Purdie 17 tahun lalu
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1 mengubah file dengan 1 tambahan dan 0 penghapusan
  1. 1 0
      include/linux/leds.h

+ 1 - 0
include/linux/leds.h

@@ -35,6 +35,7 @@ struct led_classdev {
 #define LED_SUSPENDED		(1 << 0)
 
 	/* Set LED brightness level */
+	/* Must not sleep, use a workqueue if needed */
 	void		(*brightness_set)(struct led_classdev *led_cdev,
 					  enum led_brightness brightness);
 	/* Get LED brightness level */