From e1013f14376f3121e73917f5455b9b7a22bdfb41 Mon Sep 17 00:00:00 2001 From: Roland Dreier Date: Mon, 16 Jul 2012 11:04:41 -0700 Subject: [PATCH] qla2xxx: Remove racy, now-redundant check of sess_tearing_down Now that target_submit_cmd() / target_get_sess_cmd() check sess_tearing_down before adding commands to the list, we no longer need the check in qlt_do_work(). In fact this check is racy anyway (and that race is what inspired the change to add the check of sess_tearing_down to the target core). Cc: Chad Dupuis Cc: Arun Easi Signed-off-by: Roland Dreier Signed-off-by: Nicholas Bellinger --- drivers/scsi/qla2xxx/qla_target.c | 16 +++------------- 1 file changed, 3 insertions(+), 13 deletions(-) diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c index 87b5a330e0bf..5b30132960c7 100644 --- a/drivers/scsi/qla2xxx/qla_target.c +++ b/drivers/scsi/qla2xxx/qla_target.c @@ -2643,19 +2643,9 @@ static void qlt_do_work(struct work_struct *work) spin_lock_irqsave(&ha->hardware_lock, flags); sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, atio->u.isp24.fcp_hdr.s_id); - if (sess) { - if (unlikely(sess->se_sess->sess_tearing_down)) { - sess = NULL; - spin_unlock_irqrestore(&ha->hardware_lock, flags); - goto out_term; - } else { - /* - * Do the extra kref_get() before dropping - * qla_hw_data->hardware_lock. - */ - kref_get(&sess->se_sess->sess_kref); - } - } + /* Do kref_get() before dropping qla_hw_data->hardware_lock. */ + if (sess) + kref_get(&sess->se_sess->sess_kref); spin_unlock_irqrestore(&ha->hardware_lock, flags); if (unlikely(!sess)) { -- 2.39.2