leds: wm831x-status: Use sysfs_match_string() helper
Use sysfs_match_string() helper instead of open coded variant.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
diff --git a/drivers/leds/leds-wm831x-status.c b/drivers/leds/leds-wm831x-status.c
index be93b20..c5798b9 100644
--- a/drivers/leds/leds-wm831x-status.c
+++ b/drivers/leds/leds-wm831x-status.c
@@ -188,24 +188,14 @@ static ssize_t wm831x_status_src_store(struct device *dev,
{
struct led_classdev *led_cdev = dev_get_drvdata(dev);
struct wm831x_status *led = to_wm831x_status(led_cdev);
- char name[20];
int i;
- size_t len;
- name[sizeof(name) - 1] = '\0';
- strncpy(name, buf, sizeof(name) - 1);
- len = strlen(name);
-
- if (len && name[len - 1] == '\n')
- name[len - 1] = '\0';
-
- for (i = 0; i < ARRAY_SIZE(led_src_texts); i++) {
- if (!strcmp(name, led_src_texts[i])) {
- mutex_lock(&led->mutex);
- led->src = i;
- mutex_unlock(&led->mutex);
- wm831x_status_set(led);
- }
+ i = sysfs_match_string(led_src_texts, buf);
+ if (i >= 0) {
+ mutex_lock(&led->mutex);
+ led->src = i;
+ mutex_unlock(&led->mutex);
+ wm831x_status_set(led);
}
return size;