From c66a91974634bfdf9d8e8736219d3b27621fa704 Mon Sep 17 00:00:00 2001 From: James Smart Date: Tue, 12 Mar 2019 16:30:19 -0700 Subject: [PATCH] scsi: lpfc: Fix io lost on host resets 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 Signed-off-by: James Smart Signed-off-by: Martin K. Petersen --- 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 05fbb4765d70..e3ff07f342dc 100644 --- a/drivers/scsi/lpfc/lpfc_init.c +++ b/drivers/scsi/lpfc/lpfc_init.c @@ -3250,6 +3250,13 @@ 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++) {