[SCSI] qla4xxx: Quiesce driver activities while loopback

Quiesce all different activities performed by driver upon the link events
while loopback diagnostics is in progress.

Signed-off-by: Nilesh Javali <nilesh.javali@qlogic.com>
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/scsi/qla4xxx/ql4_os.c b/drivers/scsi/qla4xxx/ql4_os.c
index 60526bb469d3..1df13872ef9d 100644
--- a/drivers/scsi/qla4xxx/ql4_os.c
+++ b/drivers/scsi/qla4xxx/ql4_os.c
@@ -2242,6 +2242,7 @@ static int qla4xxx_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd)
             test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) ||
             !test_bit(AF_ONLINE, &ha->flags) ||
             !test_bit(AF_LINK_UP, &ha->flags) ||
+            test_bit(AF_LOOPBACK, &ha->flags) ||
             test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags))
                 goto qc_host_busy;
 
@@ -3480,7 +3481,8 @@ dpc_post_reset_ha:
         }
 
         /* ---- link change? --- */
-        if (test_and_clear_bit(DPC_LINK_CHANGED, &ha->dpc_flags)) {
+        if (!test_bit(AF_LOOPBACK, &ha->flags) &&
+            test_and_clear_bit(DPC_LINK_CHANGED, &ha->dpc_flags)) {
                 if (!test_bit(AF_LINK_UP, &ha->flags)) {
                         /* ---- link down? --- */
                         qla4xxx_mark_all_devices_missing(ha);