X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=drivers%2Ftarget%2Ftarget_core_alua.c;h=0364ca2d42ec26102bcd43fb01959c2ec129e64c;hb=1506cb20191c0b33ae0c6cedac7a0ebf4fee3cf7;hp=1dcbef499d6a09f2add951dee10c955f3541ccb8;hpb=2cfab8d74ebfbe06ce2947117945c4f45a5915ec;p=pandora-kernel.git

diff --git a/drivers/target/target_core_alua.c b/drivers/target/target_core_alua.c
index 1dcbef499d6a..0364ca2d42ec 100644
--- a/drivers/target/target_core_alua.c
+++ b/drivers/target/target_core_alua.c
@@ -30,6 +30,7 @@
 #include <linux/export.h>
 #include <scsi/scsi.h>
 #include <scsi/scsi_cmnd.h>
+#include <asm/unaligned.h>
 
 #include <target/target_core_base.h>
 #include <target/target_core_device.h>
@@ -79,7 +80,7 @@ int target_emulate_report_target_port_groups(struct se_task *task)
 		return -EINVAL;
 	}
 
-	buf = transport_kmap_first_data_page(cmd);
+	buf = transport_kmap_data_sg(cmd);
 
 	spin_lock(&su_dev->t10_alua.tg_pt_gps_lock);
 	list_for_each_entry(tg_pt_gp, &su_dev->t10_alua.tg_pt_gps_list,
@@ -164,7 +165,7 @@ int target_emulate_report_target_port_groups(struct se_task *task)
 	buf[2] = ((rd_len >> 8) & 0xff);
 	buf[3] = (rd_len & 0xff);
 
-	transport_kunmap_first_data_page(cmd);
+	transport_kunmap_data_sg(cmd);
 
 	task->task_scsi_status = GOOD;
 	transport_complete_task(task, 1);
@@ -195,7 +196,7 @@ int target_emulate_set_target_port_groups(struct se_task *task)
 		cmd->scsi_sense_reason = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
 		return -EINVAL;
 	}
-	buf = transport_kmap_first_data_page(cmd);
+	buf = transport_kmap_data_sg(cmd);
 
 	/*
 	 * Determine if explict ALUA via SET_TARGET_PORT_GROUPS is allowed
@@ -268,8 +269,7 @@ int target_emulate_set_target_port_groups(struct se_task *task)
 		 * changed.
 		 */
 		if (primary) {
-			tg_pt_id = ((ptr[2] << 8) & 0xff);
-			tg_pt_id |= (ptr[3] & 0xff);
+			tg_pt_id = get_unaligned_be16(ptr + 2);
 			/*
 			 * Locate the matching target port group ID from
 			 * the global tg_pt_gp list
@@ -313,8 +313,7 @@ int target_emulate_set_target_port_groups(struct se_task *task)
 			 * the Target Port in question for the the incoming
 			 * SET_TARGET_PORT_GROUPS op.
 			 */
-			rtpi = ((ptr[2] << 8) & 0xff);
-			rtpi |= (ptr[3] & 0xff);
+			rtpi = get_unaligned_be16(ptr + 2);
 			/*
 			 * Locate the matching relative target port identifer
 			 * for the struct se_device storage object.
@@ -352,10 +351,12 @@ int target_emulate_set_target_port_groups(struct se_task *task)
 	}
 
 out:
-	transport_kunmap_first_data_page(cmd);
-	task->task_scsi_status = GOOD;
-	transport_complete_task(task, 1);
-	return 0;
+	transport_kunmap_data_sg(cmd);
+	if (!rc) {
+		task->task_scsi_status = GOOD;
+		transport_complete_task(task, 1);
+	}
+	return rc;
 }
 
 static inline int core_alua_state_nonoptimized(