target: Core cleanups from AGrover (round 1)

This patch contains the squashed version of a number of cleanups and
minor fixes from Andy's initial series (round 1) for target core this
past spring.  The condensed log looks like:

target: use errno values instead of returning -1 for everything
target: Rename transport_calc_sg_num to transport_init_task_sg
target: Fix leak in error path in transport_init_task_sg
target/pscsi: Remove pscsi_get_sh() usage
target: Make two runtime checks into WARN_ONs
target: Remove hba queue depth and convert to spin_lock_irq usage
target: dev->dev_status_queue_obj is unused
target: Make struct se_queue_req.cmd type struct se_cmd *
target: Remove __transport_get_qr_from_queue()
target: Rename se_dev->g_se_dev_list to se_dev_node
target: Remove struct se_global
target: Simplify scsi mib index table code
target: Make dev_queue_obj a member of se_device instead of a pointer
target: remove extraneous returns at end of void functions
target: Ensure transport_dump_vpd_ident_type returns null-terminated str
target: Function pointers don't need to use '&' to be assigned
target: Fix comment in __transport_execute_tasks()
target: Misc style cleanups
target: rename struct pr_reservation_template to pr_reservation
target: Remove #defines that just perform indirection
target: Inline transport_get_task_from_execute_queue()
target: Minor header comment fixes

Signed-off-by: Andy Grover <agrover@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>

3 files changed, 7 insertions, 8 deletions

diff --git a/drivers/target/tcm_fc/tfc_cmd.c b/drivers/target/tcm_fc/tfc_cmd.c
index 92a449aeded..19b2b994831 100644
--- a/drivers/target/tcm_fc/tfc_cmd.c
+++ b/drivers/target/tcm_fc/tfc_cmd.c
@@ -72,7 +72,7 @@ void ft_dump_cmd(struct ft_cmd *cmd, const char *caller)
 		caller, cmd, cmd->cdb);
 	printk(KERN_INFO "%s: cmd %p lun %d\n", caller, cmd, cmd->lun);
 
-	task = T_TASK(se_cmd);
+	task = se_cmd->t_task;
 	printk(KERN_INFO "%s: cmd %p task %p se_num %u buf %p len %u se_cmd_flags <0x%x>\n",
 	       caller, cmd, task, task->t_tasks_se_num,
 	       task->t_task_buf, se_cmd->data_length, se_cmd->se_cmd_flags);
@@ -262,9 +262,9 @@ int ft_write_pending(struct se_cmd *se_cmd)
 				 * TCM/LIO target
 				 */
 				transport_do_task_sg_chain(se_cmd);
-				cmd->sg = T_TASK(se_cmd)->t_tasks_sg_chained;
+				cmd->sg = se_cmd->t_task->t_tasks_sg_chained;
 				cmd->sg_cnt =
-					T_TASK(se_cmd)->t_tasks_sg_chained_no;
+					se_cmd->t_task->t_tasks_sg_chained_no;
 			}
 			if (cmd->sg && lport->tt.ddp_setup(lport, ep->xid,
 						    cmd->sg, cmd->sg_cnt))
@@ -670,7 +670,6 @@ static void ft_send_cmd(struct ft_cmd *cmd)
 
 err:
 	ft_send_resp_code(cmd, FCP_CMND_FIELDS_INVALID);
-	return;
 }
 
 /*
diff --git a/drivers/target/tcm_fc/tfc_conf.c b/drivers/target/tcm_fc/tfc_conf.c
index 84e868c255d..8c5067c6572 100644
--- a/drivers/target/tcm_fc/tfc_conf.c
+++ b/drivers/target/tcm_fc/tfc_conf.c
@@ -582,10 +582,10 @@ int ft_register_configfs(void)
 	 * Register the top level struct config_item_type with TCM core
 	 */
 	fabric = target_fabric_configfs_init(THIS_MODULE, "fc");
-	if (!fabric) {
+	if (IS_ERR(fabric)) {
 		printk(KERN_INFO "%s: target_fabric_configfs_init() failed!\n",
 		       __func__);
-		return -1;
+		return PTR_ERR(fabric);
 	}
 	fabric->tf_ops = ft_fabric_ops;
 
diff --git a/drivers/target/tcm_fc/tfc_io.c b/drivers/target/tcm_fc/tfc_io.c
index 8c4a24077d9..47efcfb9f4b 100644
--- a/drivers/target/tcm_fc/tfc_io.c
+++ b/drivers/target/tcm_fc/tfc_io.c
@@ -90,7 +90,7 @@ int ft_queue_data_in(struct se_cmd *se_cmd)
 	lport = ep->lp;
 	cmd->seq = lport->tt.seq_start_next(cmd->seq);
 
-	task = T_TASK(se_cmd);
+	task = se_cmd->t_task;
 	BUG_ON(!task);
 	remaining = se_cmd->data_length;
 
@@ -236,7 +236,7 @@ void ft_recv_write_data(struct ft_cmd *cmd, struct fc_frame *fp)
 	u32 f_ctl;
 	void *buf;
 
-	task = T_TASK(se_cmd);
+	task = se_cmd->t_task;
 	BUG_ON(!task);
 
 	fh = fc_frame_header_get(fp);