From: Quinn Tran <qutran@marvell.com>
Date: Thu, 12 Sep 2019 11:09:06 -0700
Subject: scsi: qla2xxx: Fix unbound sleep in fcport delete path.
Patch-mainline: v5.4-rc2
Git-commit: c3b6a1d397420a0fdd97af2f06abfb78adc370df
References: bsc#1143706 bsc#1082635 bsc#1123034
There are instances, though rare, where a LOGO request cannot be sent out
and the thread in free session done can wait indefinitely. Fix this by
putting an upper bound to sleep.
Link: https://lore.kernel.org/r/20190912180918.6436-3-hmadhani@marvell.com
Signed-off-by: Quinn Tran <qutran@marvell.com>
Signed-off-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Acked-by: Daniel Wagner <dwagner@suse.de>
---
drivers/scsi/qla2xxx/qla_target.c | 4 ++++
1 file changed, 4 insertions(+)
--- a/drivers/scsi/qla2xxx/qla_target.c
+++ b/drivers/scsi/qla2xxx/qla_target.c
@@ -1029,6 +1029,7 @@ void qlt_free_session_done(struct work_s
if (logout_started) {
bool traced = false;
+ u16 cnt = 0;
while (!READ_ONCE(sess->logout_completed)) {
if (!traced) {
@@ -1038,6 +1039,9 @@ void qlt_free_session_done(struct work_s
traced = true;
}
msleep(100);
+ cnt++;
+ if (cnt > 200)
+ break;
}
ql_dbg(ql_dbg_disc, vha, 0xf087,