struct led_classdev *led_cdev = dev_get_drvdata(dev);
struct swconfig_trig_data *trig_data = led_cdev->trigger_data;
unsigned long port_mask;
- ssize_t ret = -EINVAL;
- char *after;
- size_t count;
+ int ret;
+ bool changed;
- port_mask = simple_strtoul(buf, &after, 16);
- count = after - buf;
+ ret = kstrtoul(buf, 0, &port_mask);
+ if (ret)
+ return ret;
- if (*after && isspace(*after))
- count++;
+ write_lock(&trig_data->lock);
- if (count == size) {
- bool changed;
-
- write_lock(&trig_data->lock);
-
- changed = (trig_data->port_mask != port_mask);
- if (changed) {
- trig_data->port_mask = port_mask;
- if (port_mask == 0)
- swconfig_trig_set_brightness(trig_data, LED_OFF);
- }
-
- write_unlock(&trig_data->lock);
+ changed = (trig_data->port_mask != port_mask);
+ if (changed) {
+ trig_data->port_mask = port_mask;
+ if (port_mask == 0)
+ swconfig_trig_set_brightness(trig_data, LED_OFF);
+ }
- if (changed)
- swconfig_trig_update_port_mask(led_cdev->trigger);
+ write_unlock(&trig_data->lock);
- ret = count;
- }
+ if (changed)
+ swconfig_trig_update_port_mask(led_cdev->trigger);
- return ret;
+ return size;
}
static ssize_t