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Diffstat (limited to 'drivers/base/cpu.c')
-rw-r--r--drivers/base/cpu.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/base/cpu.c b/drivers/base/cpu.c
index 25c8768172e9..7431ba6fc2d4 100644
--- a/drivers/base/cpu.c
+++ b/drivers/base/cpu.c
@@ -13,11 +13,21 @@
#include <linux/gfp.h>
#include <linux/slab.h>
#include <linux/percpu.h>
+#include <linux/acpi.h>
#include "base.h"
static DEFINE_PER_CPU(struct device *, cpu_sys_devices);
+static int cpu_subsys_match(struct device *dev, struct device_driver *drv)
+{
+ /* ACPI style match is the only one that may succeed. */
+ if (acpi_driver_match_device(dev, drv))
+ return 1;
+
+ return 0;
+}
+
#ifdef CONFIG_HOTPLUG_CPU
static void change_cpu_under_node(struct cpu *cpu,
unsigned int from_nid, unsigned int to_nid)
@@ -98,6 +108,7 @@ static DEVICE_ATTR(release, S_IWUSR, NULL, cpu_release_store);
struct bus_type cpu_subsys = {
.name = "cpu",
.dev_name = "cpu",
+ .match = cpu_subsys_match,
#ifdef CONFIG_HOTPLUG_CPU
.online = cpu_subsys_online,
.offline = cpu_subsys_offline,