From: Nicholas Bellinger <nab@linux-iscsi.org>
Date: Wed, 10 Aug 2011 05:53:02 +0000 (-0700)
Subject: target: Remove duplicate task completions in transport_emulate_control_cdb
X-Git-Tag: upstream/snapshot3+hdmi~9205^2~10
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=72f4ba1e32a1e5da31dcf14ea4b8985ae88a8bdb;p=platform%2Fadaptation%2Frenesas_rcar%2Frenesas_kernel.git

target: Remove duplicate task completions in transport_emulate_control_cdb

This patch removes a duplicate set of transport_complete_task() calls in
target_emulate_unmap() and target_emulate_write_same() as the completion
call is already done within transport_emulate_control_cdb()

This patch also adds a check in transport_emulate_control_cdb() for the
existing SCF_EMULATE_CDB_ASYNC flag currently used by SYNCHRONIZE_CACHE
in order to handle IMMEDIATE processing.

Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
---

diff --git a/drivers/target/target_core_cdb.c b/drivers/target/target_core_cdb.c
index 4c1d3a9..40ad142 100644
--- a/drivers/target/target_core_cdb.c
+++ b/drivers/target/target_core_cdb.c
@@ -1077,8 +1077,6 @@ target_emulate_unmap(struct se_task *task)
 		size -= 16;
 	}
 
-	task->task_scsi_status = GOOD;
-	transport_complete_task(task, 1);
 err:
 	transport_kunmap_first_data_page(cmd);
 
@@ -1115,8 +1113,6 @@ target_emulate_write_same(struct se_task *task, u32 num_blocks)
 		return ret;
 	}
 
-	task->task_scsi_status = GOOD;
-	transport_complete_task(task, 1);
 	return 0;
 }
 
@@ -1228,8 +1224,14 @@ transport_emulate_control_cdb(struct se_task *task)
 
 	if (ret < 0)
 		return ret;
-	task->task_scsi_status = GOOD;
-	transport_complete_task(task, 1);
+	/*
+	 * Handle the successful completion here unless a caller
+	 * has explictly requested an asychronous completion.
+	 */
+	if (!(cmd->se_cmd_flags & SCF_EMULATE_CDB_ASYNC)) {
+		task->task_scsi_status = GOOD;
+		transport_complete_task(task, 1);
+	}
 
 	return PYX_TRANSPORT_SENT_TO_TRANSPORT;
 }