releases/3.8.8/target-fix-incorrect-fallthrough-of-alua-standby-offline-transition-cdbs.patch

   1 From 30f359a6f9da65a66de8cadf959f0f4a0d498bba Mon Sep 17 00:00:00 2001
   2 From: Nicholas Bellinger <nab@linux-iscsi.org>
   3 Date: Wed, 10 Apr 2013 15:00:27 -0700
   4 Subject: target: Fix incorrect fallthrough of ALUA Standby/Offline/Transition CDBs
   5
   6 From: Nicholas Bellinger <nab@linux-iscsi.org>
   7
   8 commit 30f359a6f9da65a66de8cadf959f0f4a0d498bba upstream.
   9
  10 This patch fixes a bug where a handful of informational / control CDBs
  11 that should be allowed during ALUA access state Standby/Offline/Transition
  12 where incorrectly returning CHECK_CONDITION + ASCQ_04H_ALUA_TG_PT_*.
  13
  14 This includes INQUIRY + REPORT_LUNS, which would end up preventing LUN
  15 registration when LUN scanning occured during these ALUA access states.
  16
  17 Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
  18 Cc: Hannes Reinecke <hare@suse.de>
  19 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
  20
  21 ---
  22  drivers/target/target_core_alua.c |    3 +++
  23  1 file changed, 3 insertions(+)
  24
  25 --- a/drivers/target/target_core_alua.c
  26 +++ b/drivers/target/target_core_alua.c
  27 @@ -408,6 +408,7 @@ static inline int core_alua_state_standb
  28         case REPORT_LUNS:
  29         case RECEIVE_DIAGNOSTIC:
  30         case SEND_DIAGNOSTIC:
  31 +               return 0;
  32         case MAINTENANCE_IN:
  33                 switch (cdb[1] & 0x1f) {
  34                 case MI_REPORT_TARGET_PGS:
  35 @@ -450,6 +451,7 @@ static inline int core_alua_state_unavai
  36         switch (cdb[0]) {
  37         case INQUIRY:
  38         case REPORT_LUNS:
  39 +               return 0;
  40         case MAINTENANCE_IN:
  41                 switch (cdb[1] & 0x1f) {
  42                 case MI_REPORT_TARGET_PGS:
  43 @@ -490,6 +492,7 @@ static inline int core_alua_state_transi
  44         switch (cdb[0]) {
  45         case INQUIRY:
  46         case REPORT_LUNS:
  47 +               return 0;
  48         case MAINTENANCE_IN:
  49                 switch (cdb[1] & 0x1f) {
  50                 case MI_REPORT_TARGET_PGS: