qla2xxx: Get rid of redundant qla_tgt_sess.tearing_down

The only place that sets qla_tgt_sess.tearing_down calls
target_splice_sess_cmd_list() immediately afterwards, without dropping
the lock it holds.  That function sets se_session.sess_tearing_down,
so we can get rid of the qla_target-specific flag, and in the one
place that looks at the qla_tgt_sess.tearing_down flag just test
se_session.sess_tearing_down instead.

Cc: Chad Dupuis <chad.dupuis@qlogic.com>
Cc: Arun Easi <arun.easi@qlogic.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>

diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c
index 77759c7..87b5a33 100644 (file)
--- a/drivers/scsi/qla2xxx/qla_target.c
+++ b/drivers/scsi/qla2xxx/qla_target.c
@@ -2644,7 +2644,7 @@ static void qlt_do_work(struct work_struct *work)
        sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
            atio->u.isp24.fcp_hdr.s_id);
        if (sess) {
-               if (unlikely(sess->tearing_down)) {
+               if (unlikely(sess->se_sess->sess_tearing_down)) {
                        sess = NULL;
                        spin_unlock_irqrestore(&ha->hardware_lock, flags);
                        goto out_term;

diff --git a/drivers/scsi/qla2xxx/qla_target.h b/drivers/scsi/qla2xxx/qla_target.h
index 2953db8..170af15 100644 (file)
--- a/drivers/scsi/qla2xxx/qla_target.h
+++ b/drivers/scsi/qla2xxx/qla_target.h
@@ -813,7 +813,6 @@ struct qla_tgt_sess {
        unsigned int conf_compl_supported:1;
        unsigned int deleted:1;
        unsigned int local:1;
-       unsigned int tearing_down:1;
 
        struct se_session *se_sess;
        struct scsi_qla_host *vha;

diff --git a/drivers/scsi/qla2xxx/tcm_qla2xxx.c b/drivers/scsi/qla2xxx/tcm_qla2xxx.c
index d85a817..e131d68 100644 (file)
--- a/drivers/scsi/qla2xxx/tcm_qla2xxx.c
+++ b/drivers/scsi/qla2xxx/tcm_qla2xxx.c
@@ -464,7 +464,6 @@ static int tcm_qla2xxx_shutdown_session(struct se_session *se_sess)
        vha = sess->vha;
 
        spin_lock_irqsave(&vha->hw->hardware_lock, flags);
-       sess->tearing_down = 1;
        target_splice_sess_cmd_list(se_sess);
        spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);