set_current_state(TASK_UNINTERRUPTIBLE); schedule_timeout(usecs_to_jiffies(usecs));
schedule_timeout_uninterruptible(usecs_to_jiffies(usecs));
void vfc_i2c_delay_no_busy(struct vfc_dev *dev, unsigned long usecs) {	set_current_state(TASK_UNINTERRUPTIBLE);	schedule_timeout(usecs_to_jiffies(usecs));}