[PATCH 3.8 067/166] qla2xxx: Fix schedule_delayed_work() for target timeout calculations

Kamal Mostafa
2014-01-15T21:51:21Z

From: Shivaram Upadhyayula <shivaram.u@quadstor.com>

commit 63832aabec12a28a41a221773ab3819d30ba0a67 upstream.

This patch fixes two cases in qla_target.c code where the
schedule_delayed_work() value was being incorrectly calculated
from sess->expires - jiffies.

Signed-off-by: Shivaram U <shivaram.u@quadstor.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/scsi/qla2xxx/qla_target.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c
index 80f4b84..66c6214 100644
--- a/drivers/scsi/qla2xxx/qla_target.c
+++ b/drivers/scsi/qla2xxx/qla_target.c
@@ -481,7 +481,7 @@ static void qlt_schedule_sess_for_deletion(struct qla_tgt_sess *sess,
schedule_delayed_work(&tgt->sess_del_work, 0);
else
schedule_delayed_work(&tgt->sess_del_work,
- jiffies - sess->expires);
+ sess->expires - jiffies);
}

/* ha->hardware_lock supposed to be held on entry */
@@ -656,13 +656,14 @@ static void qlt_del_sess_work_fn(struct delayed_work *work)
struct scsi_qla_host *vha = tgt->vha;
struct qla_hw_data *ha = vha->hw;
struct qla_tgt_sess *sess;
- unsigned long flags;
+ unsigned long flags, elapsed;

spin_lock_irqsave(&ha->hardware_lock, flags);
while (!list_empty(&tgt->del_sess_list)) {
sess = list_entry(tgt->del_sess_list.next, typeof(*sess),
del_list_entry);
- if (time_after_eq(jiffies, sess->expires)) {
+ elapsed = jiffies;
+ if (time_after_eq(elapsed, sess->expires)) {
bool cancel;

qlt_undelete_sess(sess);
@@ -702,7 +703,7 @@ static void qlt_del_sess_work_fn(struct delayed_work *work)
spin_lock_irqsave(&ha->hardware_lock, flags);
} else {
schedule_delayed_work(&tgt->sess_del_work,
- jiffies - sess->expires);
+ sess->expires - elapsed);
break;
}
}
--
1.8.3.2