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leds: wm831x-status: Use sysfs_match_string() helper

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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>
This commit is contained in:
Andy Shevchenko 2018-05-03 21:10:03 +03:00 • committed by Jacek Anaszewski
parent 9e50d5fb0d
commit d54e5b5222
1 changed files with 6 additions and 16 deletions
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22
drivers/leds/leds-wm831x-status.c
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@ -188,24 +188,14 @@ static ssize_t wm831x_status_src_store(struct device *dev,
{ {
struct led_classdev *led_cdev = dev_get_drvdata(dev); struct led_classdev *led_cdev = dev_get_drvdata(dev);
struct wm831x_status *led = to_wm831x_status(led_cdev); struct wm831x_status *led = to_wm831x_status(led_cdev);
char name[20];
int i; int i;
size_t len;
name[sizeof(name) - 1] = '\0'; i = sysfs_match_string(led_src_texts, buf);
strncpy(name, buf, sizeof(name) - 1); if (i >= 0) {
len = strlen(name); mutex_lock(&led->mutex);
led->src = i;
if (len && name[len - 1] == '\n') mutex_unlock(&led->mutex);
name[len - 1] = '\0'; wm831x_status_set(led);
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);
}
} }
return size; return size;