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leds: Remove uneeded strlen calls

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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: Sven Wegener <sven.wegener@stealer.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
This commit is contained in:
Sven Wegener 2008-10-13 10:41:39 +01:00 committed by Richard Purdie
parent 6af4f55c31
commit dd8e5a2039
2 changed files with 3 additions and 10 deletions
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5
drivers/leds/led-class.c
View File

@ -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,

8
drivers/leds/ledtrig-timer.c
View File

@ -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,