leds: triggers: simplify led_trigger_store

led_trigger_store can be significantly simplified by using sysfs_streq().

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>

diff --git a/drivers/leds/led-triggers.c b/drivers/leds/led-triggers.c
index e1e9334..2181581 100644 (file)
--- a/drivers/leds/led-triggers.c
+++ b/drivers/leds/led-triggers.c
@@ -34,9 +34,7 @@ ssize_t led_trigger_store(struct device *dev, struct device_attribute *attr,
                const char *buf, size_t count)
 {
        struct led_classdev *led_cdev = dev_get_drvdata(dev);
-       char trigger_name[TRIG_NAME_MAX];
        struct led_trigger *trig;
-       size_t len;
        int ret = count;
 
        mutex_lock(&led_cdev->led_access);
@@ -46,21 +44,14 @@ ssize_t led_trigger_store(struct device *dev, struct device_attribute *attr,
                goto unlock;
        }
 
-       trigger_name[sizeof(trigger_name) - 1] = '\0';
-       strncpy(trigger_name, buf, sizeof(trigger_name) - 1);
-       len = strlen(trigger_name);
-
-       if (len && trigger_name[len - 1] == '\n')
-               trigger_name[len - 1] = '\0';
-
-       if (!strcmp(trigger_name, "none")) {
+       if (sysfs_streq(buf, "none")) {
                led_trigger_remove(led_cdev);
                goto unlock;
        }
 
        down_read(&triggers_list_lock);
        list_for_each_entry(trig, &trigger_list, next_trig) {
-               if (!strcmp(trigger_name, trig->name)) {
+               if (sysfs_streq(buf, trig->name)) {
                        down_write(&led_cdev->trigger_lock);
                        led_trigger_set(led_cdev, trig);
                        up_write(&led_cdev->trigger_lock);