v4l2_printk
v4l2_printk(KERN_DEBUG, &dev->v4l2_dev,
v4l2_printk(KERN_DEBUG, &dev->v4l2_dev,
v4l2_printk(KERN_DEBUG, &dev->v4l2_dev,
v4l2_printk(KERN_DEBUG, \
v4l2_printk(KERN_ERR, dev, fmt , ## arg)
v4l2_printk(KERN_WARNING, dev, fmt , ## arg)
v4l2_printk(KERN_INFO, dev, fmt , ## arg)
v4l2_printk(KERN_DEBUG, dev, fmt , ## arg); \