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

[ Upstream commit c3b6a1d397 ]

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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Quinn Tran 2019-09-12 11:09:06 -07:00 committed by Greg Kroah-Hartman
parent 00cee7e535
commit 1c9b9e5b6b
1 changed files with 4 additions and 0 deletions
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4
drivers/scsi/qla2xxx/qla_target.c
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@ -996,6 +996,7 @@ static void qlt_free_session_done(struct work_struct *work)
if (logout_started) {
bool traced = false;
u16 cnt = 0;
while (!ACCESS_ONCE(sess->logout_completed)) {
if (!traced) {
@ -1005,6 +1006,9 @@ static void qlt_free_session_done(struct work_struct *work)
traced = true;
}
msleep(100);
cnt++;
if (cnt > 200)
break;
}
ql_dbg(ql_dbg_disc, vha, 0xf087,