From 19193ff34e8d72676f3022d46893ac769f457a11 Mon Sep 17 00:00:00 2001 From: James Smart Date: Tue, 12 Mar 2019 16:30:25 -0700 Subject: [PATCH] scsi: lpfc: Fix handling of trunk links state reporting If all the trunk links drop and a single link resumes, the link_state is not properly reported. When trunked, the driver receives two async cqes. One acqe reports the trunk link states, which the driver records. The other cqe reports the overall state of the trunk. In the failing case, the trunk link state acqe preceeds the overall trunk link state acqe. The trunk link state acqe, as it's an "up" transition, calls a code path which ensures a down transition before moving to the up state. The down transition had a side effect of clearing the just-saved trunk link states. Fix by not clearing the trunk link states if we've already transitioned to a down state. Signed-off-by: Dick Kennedy Signed-off-by: James Smart Signed-off-by: Martin K. Petersen --- drivers/scsi/lpfc/lpfc_hbadisc.c | 10 ++-------- 1 file changed, 2 insertions(+), 8 deletions(-) diff --git a/drivers/scsi/lpfc/lpfc_hbadisc.c b/drivers/scsi/lpfc/lpfc_hbadisc.c index 75e9d46..32cfa5c 100644 --- a/drivers/scsi/lpfc/lpfc_hbadisc.c +++ b/drivers/scsi/lpfc/lpfc_hbadisc.c @@ -885,15 +885,9 @@ lpfc_linkdown(struct lpfc_hba *phba) LPFC_MBOXQ_t *mb; int i; - if (phba->link_state == LPFC_LINK_DOWN) { - if (phba->sli4_hba.conf_trunk) { - phba->trunk_link.link0.state = 0; - phba->trunk_link.link1.state = 0; - phba->trunk_link.link2.state = 0; - phba->trunk_link.link3.state = 0; - } + if (phba->link_state == LPFC_LINK_DOWN) return 0; - } + /* Block all SCSI stack I/Os */ lpfc_scsi_dev_block(phba); -- 2.7.4