cpumask: convert arch/x86/kernel/cpu/mcheck/mce_64.c

Simple conversion of mce_device_initialized to cpumask_t.  We don't
check the alloc_cpumask_var() return since it's boot-time only, and
the misc_register() in that same function isn't checked.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
---
 arch/x86/kernel/cpu/mcheck/mce_64.c |   11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/arch/x86/kernel/cpu/mcheck/mce_64.c b/arch/x86/kernel/cpu/mcheck/mce_64.c
--- a/arch/x86/kernel/cpu/mcheck/mce_64.c
+++ b/arch/x86/kernel/cpu/mcheck/mce_64.c
@@ -820,7 +820,7 @@ static struct sysdev_attribute *mce_attr
 	NULL
 };
 
-static cpumask_t mce_device_initialized = CPU_MASK_NONE;
+static cpumask_var_t mce_device_initialized;
 
 /* Per cpu sysdev init.  All of the cpus still share the same ctl bank */
 static __cpuinit int mce_create_device(unsigned int cpu)
@@ -845,7 +845,7 @@ static __cpuinit int mce_create_device(u
 		if (err)
 			goto error;
 	}
-	cpu_set(cpu, mce_device_initialized);
+	cpumask_set_cpu(cpu, mce_device_initialized);
 
 	return 0;
 error:
@@ -862,14 +862,14 @@ static __cpuinit void mce_remove_device(
 {
 	int i;
 
-	if (!cpu_isset(cpu, mce_device_initialized))
+	if (!cpumask_test_cpu(cpu, mce_device_initialized))
 		return;
 
 	for (i = 0; mce_attributes[i]; i++)
 		sysdev_remove_file(&per_cpu(device_mce,cpu),
 			mce_attributes[i]);
 	sysdev_unregister(&per_cpu(device_mce,cpu));
-	cpu_clear(cpu, mce_device_initialized);
+	cpumask_clear_cpu(cpu, mce_device_initialized);
 }
 
 /* Get notified when a cpu comes on/off. Be hotplug friendly. */
@@ -906,6 +906,9 @@ static __init int mce_init_device(void)
 
 	if (!mce_available(&boot_cpu_data))
 		return -EIO;
+
+	alloc_cpumask_var(&mce_device_initialized, GFP_KERNEL);
+
 	err = sysdev_class_register(&mce_sysclass);
 	if (err)
 		return err;