If the congestion management framework dynamically enables, it may do
so while I/O is in flight. The updates of cmf info due to inflight
I/O completing may happen before values have been initialized.
Fix by ensure cmf_max_bytes_per_interval is initialized when checking
bandwidth utilization for SCSI layer blocking.
Co-developed-by: Justin Tee <justin.tee@xxxxxxxxxxxx>
Signed-off-by: Justin Tee <justin.tee@xxxxxxxxxxxx>
Signed-off-by: James Smart <jsmart2021@xxxxxxxxx>
---
drivers/scsi/lpfc/lpfc_scsi.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/scsi/lpfc/lpfc_scsi.c b/drivers/scsi/lpfc/lpfc_scsi.c
index b70f71b5c1f7..a2cd22728b0f 100644
--- a/drivers/scsi/lpfc/lpfc_scsi.c
+++ b/drivers/scsi/lpfc/lpfc_scsi.c
@@ -3961,7 +3961,8 @@ lpfc_update_cmf_cmd(struct lpfc_hba *phba, uint32_t size)
int cpu;
/* At this point we are either LPFC_CFG_MANAGED or LPFC_CFG_MONITOR */
- if (phba->cmf_active_mode == LPFC_CFG_MANAGED) {
+ if (phba->cmf_active_mode == LPFC_CFG_MANAGED &&
+ phba->cmf_max_bytes_per_interval) {
total = 0;
for_each_present_cpu(cpu) {
cgs = per_cpu_ptr(phba->cmf_stat, cpu);
--
2.26.2
