Symbol: v4l2_device_supports_requests
drivers/media/v4l2-core/v4l2-dev.c
466
if (v4l2_device_supports_requests(vdev->v4l2_dev)) {
drivers/media/v4l2-core/v4l2-ioctl.c
3090
if (v4l2_device_supports_requests(vfd->v4l2_dev) &&