scsi_device_max_queue_depth
depth = min_t(int, depth, scsi_device_max_queue_depth(sdev));
extern int scsi_device_max_queue_depth(struct scsi_device *sdev);
depth = min_t(unsigned int, depth, scsi_device_max_queue_depth(sdev));
scsi_device_max_queue_depth(sdev),