From: James Smart Date: Tue, 12 Mar 2019 23:30:19 +0000 (-0700) Subject: scsi: lpfc: Fix io lost on host resets X-Git-Tag: v5.1.6~42 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6a6cfca977b060af120090191ca48ea17d7d2518;p=thirdparty%2Fkernel%2Fstable.git 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 Signed-off-by: James Smart Signed-off-by: Martin K. Petersen Signed-off-by: Sasha Levin --- 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++) {