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scsi: qla2xxx: Fix unbound sleep in fcport delete path. 

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>
This commit is contained in:
Quinn Tran 2019-09-12 11:09:06 -07:00 committed by Martin K. Petersen
parent 248a445adf
commit c3b6a1d397
1 changed files with 4 additions and 0 deletions
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4
drivers/scsi/qla2xxx/qla_target.c
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@ -1020,6 +1020,7 @@ void qlt_free_session_done(struct work_struct *work)
if (logout_started) { if (logout_started) {
bool traced = false; bool traced = false;
u16 cnt = 0;
while (!READ_ONCE(sess->logout_completed)) { while (!READ_ONCE(sess->logout_completed)) {
if (!traced) { if (!traced) {
@ -1029,6 +1030,9 @@ void qlt_free_session_done(struct work_struct *work)
traced = true; traced = true;
} }
msleep(100); msleep(100);
cnt++;
if (cnt > 200)
break;
} }
ql_dbg(ql_dbg_disc, vha, 0xf087, ql_dbg(ql_dbg_disc, vha, 0xf087,