Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 5.1 364/405] scsi: lpfc: Fix io lost on host resets | Date | Wed, 29 May 2019 20:06:02 -0700 |
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[ 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
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