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 <dick.kennedy@xxxxxxxxxxxx>
Signed-off-by: James Smart <jsmart2021@xxxxxxxxx>
---
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 75e9d46d44d4..32cfa5c44c08 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);
--
2.13.7
