diff options
Diffstat (limited to 'drivers/acpi/acpi_pad.c')
| -rw-r--r-- | drivers/acpi/acpi_pad.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/acpi/acpi_pad.c b/drivers/acpi/acpi_pad.c index 8ea8211b2d58..eb76a4c10dbf 100644 --- a/drivers/acpi/acpi_pad.c +++ b/drivers/acpi/acpi_pad.c @@ -26,6 +26,7 @@ #include <linux/slab.h> #include <linux/acpi.h> #include <asm/mwait.h> +#include <xen/xen.h> #define ACPI_PROCESSOR_AGGREGATOR_CLASS "acpi_pad" #define ACPI_PROCESSOR_AGGREGATOR_DEVICE_NAME "Processor Aggregator" @@ -477,6 +478,10 @@ static struct acpi_driver acpi_pad_driver = { static int __init acpi_pad_init(void) { + /* Xen ACPI PAD is used when running as Xen Dom0. */ + if (xen_initial_domain()) + return -ENODEV; + power_saving_mwait_init(); if (power_saving_mwait_eax == 0) return -EINVAL; |