When cpumask_next() the return value is greater than or equal to
nr_cpu_ids, it indicates invalid.
Before commit 596ff4a09b89 ("cpumask: re-introduce constant-sized cpumask
optimizations"), when cpumask_next() returned an invalid cpu, the driver
used the judgment equal to nr_cpu_ids to indicate the invalid cpu, so it
happened to work normally, but this is the wrong approach.
After commit 596ff4a09b89 ("cpumask: re-introduce constant-sized cpumask
optimizations"), these incorrect practices actively buggy, so fix it to
correctly.
Signed-off-by: Vernon Yang <vernon2gm@xxxxxxxxx>
---
drivers/scsi/lpfc/lpfc_nvmet.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/scsi/lpfc/lpfc_nvmet.c b/drivers/scsi/lpfc/lpfc_nvmet.c
index 7517dd55fe91..3ae7f330f827 100644
--- a/drivers/scsi/lpfc/lpfc_nvmet.c
+++ b/drivers/scsi/lpfc/lpfc_nvmet.c
@@ -1621,7 +1621,7 @@ lpfc_nvmet_setup_io_context(struct lpfc_hba *phba)
continue;
}
cpu = cpumask_next(cpu, cpu_present_mask);
- if (cpu == nr_cpu_ids)
+ if (cpu >= nr_cpu_ids)
cpu = cpumask_first(cpu_present_mask);
}
--
2.34.1
