This is a note to let you know that I've just added the patch titled scsi: lpfc: Fix "Unexpected timeout" error in direct attach topology to the 4.19-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: scsi-lpfc-fix-unexpected-timeout-error-in-direct-att.patch and it can be found in the queue-4.19 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 464b4be455f5e2c8829a8df2d7a2598a05e77c60 Author: James Smart <jsmart2021@xxxxxxxxx> Date: Fri May 14 12:55:51 2021 -0700 scsi: lpfc: Fix "Unexpected timeout" error in direct attach topology [ Upstream commit e30d55137edef47434c40d7570276a0846fe922c ] An 'unexpected timeout' message may be seen in a point-2-point topology. The message occurs when a PLOGI is received before the driver is notified of FLOGI completion. The FLOGI completion failure causes discovery to be triggered for a second time. The discovery timer is restarted but no new discovery activity is initiated, thus the timeout message eventually appears. In point-2-point, when discovery has progressed before the FLOGI completion is processed, it is not a failure. Add code to FLOGI completion to detect that discovery has progressed and exit the FLOGI handling (noop'ing it). Link: https://lore.kernel.org/r/20210514195559.119853-4-jsmart2021@xxxxxxxxx Co-developed-by: Justin Tee <justin.tee@xxxxxxxxxxxx> Signed-off-by: Justin Tee <justin.tee@xxxxxxxxxxxx> Signed-off-by: James Smart <jsmart2021@xxxxxxxxx> Signed-off-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/drivers/scsi/lpfc/lpfc_els.c b/drivers/scsi/lpfc/lpfc_els.c index 6a4b496081e4..c4428249d3d7 100644 --- a/drivers/scsi/lpfc/lpfc_els.c +++ b/drivers/scsi/lpfc/lpfc_els.c @@ -1176,6 +1176,15 @@ stop_rr_fcf_flogi: phba->fcf.fcf_redisc_attempted = 0; /* reset */ goto out; } + } else if (vport->port_state > LPFC_FLOGI && + vport->fc_flag & FC_PT2PT) { + /* + * In a p2p topology, it is possible that discovery has + * already progressed, and this completion can be ignored. + * Recheck the indicated topology. + */ + if (!sp->cmn.fPort) + goto out; } flogifail: