leds: Remove uneeded strlen calls

There's no need for the additional call to strlen(), we can directly
return the value returned by sprintf().  We now return a length value
that doesn't include the final '\0', but user space shouldn't bother
about it anyway.
Signed-off-by: NSven Wegener <sven.wegener@stealer.net>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NRichard Purdie <rpurdie@linux.intel.com>

drivers/leds/led-class.c

@@ -34,14 +34,11 @@ static ssize_t led_brightness_show(struct device *dev,
 		struct device_attribute *attr, char *buf)
 {
 	struct led_classdev *led_cdev = dev_get_drvdata(dev);
-	ssize_t ret = 0;
 
 	/* no lock needed for this */
 	led_update_brightness(led_cdev);
-	sprintf(buf, "%u\n", led_cdev->brightness);
-	ret = strlen(buf) + 1;
 
-	return ret;
+	return sprintf(buf, "%u\n", led_cdev->brightness);
 }
 
 static ssize_t led_brightness_store(struct device *dev,

drivers/leds/ledtrig-timer.c

@@ -70,9 +70,7 @@ static ssize_t led_delay_on_show(struct device *dev,
 	struct led_classdev *led_cdev = dev_get_drvdata(dev);
 	struct timer_trig_data *timer_data = led_cdev->trigger_data;
 
-	sprintf(buf, "%lu\n", timer_data->delay_on);
-
-	return strlen(buf) + 1;
+	return sprintf(buf, "%lu\n", timer_data->delay_on);
 }
 
 static ssize_t led_delay_on_store(struct device *dev,
@@ -116,9 +114,7 @@ static ssize_t led_delay_off_show(struct device *dev,
 	struct led_classdev *led_cdev = dev_get_drvdata(dev);
 	struct timer_trig_data *timer_data = led_cdev->trigger_data;
 
-	sprintf(buf, "%lu\n", timer_data->delay_off);
-
-	return strlen(buf) + 1;
+	return sprintf(buf, "%lu\n", timer_data->delay_off);
 }
 
 static ssize_t led_delay_off_store(struct device *dev,