| From f127614d66236091ae1ff12e56ba37bc576754dc Mon Sep 17 00:00:00 2001 |
| From: James Smart <jsmart2021@gmail.com> |
| Date: Tue, 12 Mar 2019 16:30:19 -0700 |
| Subject: scsi: lpfc: Fix io lost on host resets |
| |
| [ Upstream commit c66a91974634bfdf9d8e8736219d3b27621fa704 ] |
| |
| If the driver undergoes repeated host resets it starts losing exchange |
| structures and eventually returns SCSI_MLQUEUE_HOST_BUSY and does not |
| recover. The offline path is not reclaiming the outstanding ios on the fcp |
| pring txcmplq before calling lpfc_destroy_multixripool, which causes the |
| txmcplq to be reinit and the resources lost. |
| |
| Flush the fcp rings before destroying the multixripools. |
| |
| Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> |
| Signed-off-by: James Smart <jsmart2021@gmail.com> |
| Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> |
| Signed-off-by: Sasha Levin <sashal@kernel.org> |
| --- |
| drivers/scsi/lpfc/lpfc_init.c | 7 +++++++ |
| 1 file changed, 7 insertions(+) |
| |
| diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c |
| index 7fcdaed3fa945..89a0c2bdb6a15 100644 |
| --- a/drivers/scsi/lpfc/lpfc_init.c |
| +++ b/drivers/scsi/lpfc/lpfc_init.c |
| @@ -3245,6 +3245,13 @@ void lpfc_destroy_multixri_pools(struct lpfc_hba *phba) |
| if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) |
| lpfc_destroy_expedite_pool(phba); |
| |
| + if (!(phba->pport->load_flag & FC_UNLOADING)) { |
| + lpfc_sli_flush_fcp_rings(phba); |
| + |
| + if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) |
| + lpfc_sli_flush_nvme_rings(phba); |
| + } |
| + |
| hwq_count = phba->cfg_hdw_queue; |
| |
| for (i = 0; i < hwq_count; i++) { |
| -- |
| 2.20.1 |
| |
