From: Quinn Tran qutran@marvell.com
[ Upstream commit c3b6a1d397420a0fdd97af2f06abfb78adc370df ]
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 --- drivers/scsi/qla2xxx/qla_target.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c index 11f45cb998927..d13e91e164258 100644 --- a/drivers/scsi/qla2xxx/qla_target.c +++ b/drivers/scsi/qla2xxx/qla_target.c @@ -572,6 +572,7 @@ 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) { @@ -581,6 +582,9 @@ static void qlt_free_session_done(struct work_struct *work) traced = true; } msleep(100); + cnt++; + if (cnt > 200) + break; }
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf087,