diff options
Diffstat (limited to 'drivers/base/cpu.c')
| -rw-r--r-- | drivers/base/cpu.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/base/cpu.c b/drivers/base/cpu.c index 4c358bc44c72..848ebbd25717 100644 --- a/drivers/base/cpu.c +++ b/drivers/base/cpu.c @@ -14,6 +14,7 @@ #include <linux/slab.h> #include <linux/percpu.h> #include <linux/acpi.h> +#include <linux/of.h> #include "base.h" @@ -43,11 +44,14 @@ static int __ref cpu_subsys_online(struct device *dev) struct cpu *cpu = container_of(dev, struct cpu, dev); int cpuid = dev->id; int from_nid, to_nid; - int ret; + int ret = -ENODEV; cpu_hotplug_driver_lock(); from_nid = cpu_to_node(cpuid); + if (from_nid == NUMA_NO_NODE) + goto out; + ret = cpu_up(cpuid); /* * When hot adding memory to memoryless node and enabling a cpu @@ -57,6 +61,7 @@ static int __ref cpu_subsys_online(struct device *dev) if (from_nid != to_nid) change_cpu_under_node(cpu, from_nid, to_nid); + out: cpu_hotplug_driver_unlock(); return ret; } @@ -289,6 +294,7 @@ int register_cpu(struct cpu *cpu, int num) cpu->dev.release = cpu_device_release; cpu->dev.offline_disabled = !cpu->hotpluggable; cpu->dev.offline = !cpu_online(num); + cpu->dev.of_node = of_get_cpu_node(num, NULL); #ifdef CONFIG_ARCH_HAS_CPU_AUTOPROBE cpu->dev.bus->uevent = arch_cpu_uevent; #endif |