int retval;
retval = 0;
- if (mutex_lock_interruptible(&bt->gpio_lock))
+ if (down_interruptible (&bt->gpio_lock))
return -ERESTARTSYS;
/* special gpio signal */
switch (cmd) {
retval = -EINVAL;
break;
}
- mutex_unlock(&bt->gpio_lock);
+ up(&bt->gpio_lock);
return retval;
}