diff options
Diffstat (limited to 'arch/powerpc/kernel/rtas.c')
| -rw-r--r-- | arch/powerpc/kernel/rtas.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/arch/powerpc/kernel/rtas.c b/arch/powerpc/kernel/rtas.c index 8afd146bc9c7..de35bd8f047f 100644 --- a/arch/powerpc/kernel/rtas.c +++ b/arch/powerpc/kernel/rtas.c @@ -981,7 +981,15 @@ int rtas_ibm_suspend_me(u64 handle) goto out; } - stop_topology_update(); + cpu_hotplug_disable(); + + /* Check if we raced with a CPU-Offline Operation */ + if (unlikely(!cpumask_equal(cpu_present_mask, cpu_online_mask))) { + pr_err("%s: Raced against a concurrent CPU-Offline\n", + __func__); + atomic_set(&data.error, -EBUSY); + goto out_hotplug_enable; + } /* Call function on all CPUs. One of us will make the * rtas call @@ -994,7 +1002,8 @@ int rtas_ibm_suspend_me(u64 handle) if (atomic_read(&data.error) != 0) printk(KERN_ERR "Error doing global join\n"); - start_topology_update(); +out_hotplug_enable: + cpu_hotplug_enable(); /* Take down CPUs not online prior to suspend */ cpuret = rtas_offline_cpus_mask(offline_mask); |