[ 053/147] [SCSI] scsi_dh_alua: Enable STPG for unavailable ports

[Ben Hutchings]

3.2-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Bart Van Assche <bvanassche@xxxxxxx>

commit e47f8976d8e573928824a06748f7bc82c58d747f upstream.

A quote from SPC-4: "While in the unavailable primary target port
asymmetric access state, the device server shall support those of
the following commands that it supports while in the active/optimized
state: [ ... ] d) SET TARGET PORT GROUPS; [ ... ]". Hence enable
sending STPG to a target port group that is in the unavailable state.

Signed-off-by: Bart Van Assche <bvanassche@xxxxxxx>
Reviewed-by: Mike Christie <michaelc@xxxxxxxxxxx>
Acked-by: Hannes Reinecke <hare@xxxxxxx>
Signed-off-by: James Bottomley <JBottomley@xxxxxxxxxxxxx>
Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
---
 drivers/scsi/device_handler/scsi_dh_alua.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/scsi/device_handler/scsi_dh_alua.c b/drivers/scsi/device_handler/scsi_dh_alua.c
index 08d80a6..6f4d8e6 100644
--- a/drivers/scsi/device_handler/scsi_dh_alua.c
+++ b/drivers/scsi/device_handler/scsi_dh_alua.c
@@ -641,8 +641,7 @@ static int alua_rtpg(struct scsi_device *sdev, struct alua_dh_data *h)
 		h->state = TPGS_STATE_STANDBY;
 		break;
 	case TPGS_STATE_OFFLINE:
-	case TPGS_STATE_UNAVAILABLE:
-		/* Path unusable for unavailable/offline */
+		/* Path unusable */
 		err = SCSI_DH_DEV_OFFLINED;
 		break;
 	default:


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