target: Fix incorrect fallthrough of ALUA Standby/Offline/Transition …

…CDBs

commit 30f359a upstream.

This patch fixes a bug where a handful of informational / control CDBs
that should be allowed during ALUA access state Standby/Offline/Transition
where incorrectly returning CHECK_CONDITION + ASCQ_04H_ALUA_TG_PT_*.

This includes INQUIRY + REPORT_LUNS, which would end up preventing LUN
registration when LUN scanning occured during these ALUA access states.

Signed-off-by: Nicholas Bellinger <[email protected]>
Cc: Hannes Reinecke <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

drivers/target/target_core_alua.c

@@ -351,6 +351,7 @@ static inline int core_alua_state_standby(
 	case REPORT_LUNS:
 	case RECEIVE_DIAGNOSTIC:
 	case SEND_DIAGNOSTIC:
+		return 0;
 	case MAINTENANCE_IN:
 		switch (cdb[1]) {
 		case MI_REPORT_TARGET_PGS:
@@ -393,6 +394,7 @@ static inline int core_alua_state_unavailable(
 	switch (cdb[0]) {
 	case INQUIRY:
 	case REPORT_LUNS:
+		return 0;
 	case MAINTENANCE_IN:
 		switch (cdb[1]) {
 		case MI_REPORT_TARGET_PGS:
@@ -433,6 +435,7 @@ static inline int core_alua_state_transition(
 	switch (cdb[0]) {
 	case INQUIRY:
 	case REPORT_LUNS:
+		return 0;
 	case MAINTENANCE_IN:
 		switch (cdb[1]) {
 		case MI_REPORT_TARGET_PGS: