scsi: qla2xxx: Fix device staying in blocked state

This patch fixes issue reported by some of the customers, who discovered
that after cable pull scenario the devices disappear and path seems to
remain in blocked state. Once the device reappears, driver does not seem to
update path to online. This issue appears because of the defer flag
creating race condition where the same session reappears.  This patch fixes
this issue by indicating SCSI-ML of device lost when
qlt_free_session_done() is called from qlt_unreg_sess().

Fixes: 41dc529a4602a ("qla2xxx: Improve RSCN handling in driver")
Signed-off-by: Quinn Tran <qtran@marvell.com>
Cc: stable@vger.kernel.org #4.19
Signed-off-by: Himanshu Madhani <hmadhani@marvell.com>
Reviewed-by: Ewan D. Milne <emilne@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c
index 57cdd762230df8c0797c9a7c6b020270802c9da8..fc8914dd9dde0ac3ea85f3546d49ac090948b432 100644 (file)
--- a/drivers/scsi/qla2xxx/qla_target.c
+++ b/drivers/scsi/qla2xxx/qla_target.c
@@ -982,6 +982,8 @@ void qlt_free_session_done(struct work_struct *work)
                sess->send_els_logo);
 
        if (!IS_SW_RESV_ADDR(sess->d_id)) {
+               qla2x00_mark_device_lost(vha, sess, 0, 0);
+
                if (sess->send_els_logo) {
                        qlt_port_logo_t logo;
 
@@ -1163,8 +1165,6 @@ void qlt_unreg_sess(struct fc_port *sess)
        if (sess->se_sess)
                vha->hw->tgt.tgt_ops->clear_nacl_from_fcport_map(sess);
 
-       qla2x00_mark_device_lost(vha, sess, 0, 0);
-
        sess->deleted = QLA_SESS_DELETION_IN_PROGRESS;
        sess->disc_state = DSC_DELETE_PEND;
        sess->last_rscn_gen = sess->rscn_gen;