scsi: target/core: Simplify LUN initialization in XCOPY implementation

	struct se_cmd *ec_cmd = xop->xop_se_cmd;

	struct se_cmd *pt_cmd = &xpt_cmd->se_cmd;

	if (xop->op_origin == XCOL_SOURCE_RECV_OP) {

		/*

		 * Honor destination port reservations for X-COPY PUSH emulation

		 * when CDB is received on local source port, and READs blocks to

		 * WRITE on remote destination port.

		 */

		if (!remote_port) {

			pt_cmd->se_lun = ec_cmd->se_lun;

			pt_cmd->se_dev = ec_cmd->se_dev;

			pr_debug("Honoring local SRC port from ec_cmd->se_dev:"

				" %p\n", pt_cmd->se_dev);

			pt_cmd->se_lun = ec_cmd->se_lun;

			pr_debug("Honoring local SRC port from ec_cmd->se_lun: %p\n",

				pt_cmd->se_lun);

		}

	} else {

		/*

		 * Honor source port reservation for X-COPY PULL emulation

		 * when CDB is received on local desintation port, and READs

		 * blocks from the remote source port to WRITE on local

		 * destination port.

		 */

	if (!remote_port) {

		pt_cmd->se_lun = ec_cmd->se_lun;

		pt_cmd->se_dev = ec_cmd->se_dev;

			pr_debug("Honoring local DST port from ec_cmd->se_dev:"

				" %p\n", pt_cmd->se_dev);

			pt_cmd->se_lun = ec_cmd->se_lun;

			pr_debug("Honoring local DST port from ec_cmd->se_lun: %p\n",

				pt_cmd->se_lun);

		}

	}

}

static void target_xcopy_init_pt_lun(struct se_device *se_dev,

		struct se_cmd *pt_cmd, bool remote_port)

{

	/*

	 * Don't allocate + init an pt_cmd->se_lun if honoring local port for

	 * reservations.  The pt_cmd->se_lun pointer will be setup from within

	 * target_xcopy_setup_pt_port()

	 */

	if (remote_port) {

		pr_debug("Setup emulated se_dev: %p from se_dev\n",

			pt_cmd->se_dev);

		pt_cmd->se_lun = &se_dev->xcopy_lun;

		pt_cmd->se_dev = se_dev;

	}