diff options
| -rw-r--r-- | xen/drivers/acpi/pmstat.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/xen/drivers/acpi/pmstat.c b/xen/drivers/acpi/pmstat.c index e0dd9131c6..9eb8451565 100644 --- a/xen/drivers/acpi/pmstat.c +++ b/xen/drivers/acpi/pmstat.c @@ -68,6 +68,8 @@ int do_get_pm_info(struct xen_sysctl_get_pmstat *op) case PMSTAT_PX: if ( !(xen_processor_pmbits & XEN_PROCESSOR_PM_PX) ) return -ENODEV; + if ( !cpufreq_driver ) + return -ENODEV; if ( !pmpt || !(pmpt->perf.init & XEN_PX_INIT) ) return -EINVAL; break; |