[75/90] target: Set response format in INQUIRY response

[Greg KH]

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

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

From: Roland Dreier <roland@xxxxxxxxxxxxxxx>

commit ce136176fea522fc8f4c16dcae7e8ed1d890ca39 upstream.

Current SCSI specs say that the "response format" field in the standard
INQUIRY response should be set to 2, and all the real SCSI devices I
have do put 2 here.  So let's do that too.

Signed-off-by: Roland Dreier <roland@xxxxxxxxxxxxxxx>
Signed-off-by: Nicholas Bellinger <nab@xxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>

---
 drivers/target/target_core_cdb.c |   12 ++++++++++++
 1 file changed, 12 insertions(+)

--- a/drivers/target/target_core_cdb.c
+++ b/drivers/target/target_core_cdb.c
@@ -84,6 +84,18 @@ target_emulate_inquiry_std(struct se_cmd
 	buf[2] = dev->transport->get_device_rev(dev);
 
 	/*
+	 * NORMACA and HISUP = 0, RESPONSE DATA FORMAT = 2
+	 *
+	 * SPC4 says:
+	 *   A RESPONSE DATA FORMAT field set to 2h indicates that the
+	 *   standard INQUIRY data is in the format defined in this
+	 *   standard. Response data format values less than 2h are
+	 *   obsolete. Response data format values greater than 2h are
+	 *   reserved.
+	 */
+	buf[3] = 2;
+
+	/*
 	 * Enable SCCS and TPGS fields for Emulated ALUA
 	 */
 	if (T10_ALUA(dev->se_sub_dev)->alua_type == SPC3_ALUA_EMULATED)


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