Merge branch 'master' into percpu

Conflicts:
	arch/powerpc/platforms/pseries/hvCall.S
	include/linux/percpu.h

1 files changed, 9 insertions, 14 deletions

diff --git a/arch/x86/kernel/msr.c b/arch/x86/kernel/msr.c
index 6a3cefc7dda1..4bd93c9b2b27 100644
--- a/arch/x86/kernel/msr.c
+++ b/arch/x86/kernel/msr.c
@@ -172,23 +172,18 @@ static long msr_ioctl(struct file *file, unsigned int ioc, unsigned long arg)
 
 static int msr_open(struct inode *inode, struct file *file)
 {
-	unsigned int cpu = iminor(file->f_path.dentry->d_inode);
-	struct cpuinfo_x86 *c = &cpu_data(cpu);
-	int ret = 0;
+	unsigned int cpu;
+	struct cpuinfo_x86 *c;
 
-	lock_kernel();
 	cpu = iminor(file->f_path.dentry->d_inode);
+	if (cpu >= nr_cpu_ids || !cpu_online(cpu))
+		return -ENXIO;	/* No such CPU */
 
-	if (cpu >= nr_cpu_ids || !cpu_online(cpu)) {
-		ret = -ENXIO;	/* No such CPU */
-		goto out;
-	}
 	c = &cpu_data(cpu);
 	if (!cpu_has(c, X86_FEATURE_MSR))
-		ret = -EIO;	/* MSR not supported */
-out:
-	unlock_kernel();
-	return ret;
+		return -EIO;	/* MSR not supported */
+
+	return 0;
 }
 
 /*
@@ -251,7 +246,7 @@ static int __init msr_init(void)
 	int i, err = 0;
 	i = 0;
 
-	if (register_chrdev(MSR_MAJOR, "cpu/msr", &msr_fops)) {
+	if (__register_chrdev(MSR_MAJOR, 0, NR_CPUS, "cpu/msr", &msr_fops)) {
 		printk(KERN_ERR "msr: unable to get major %d for msr\n",
 		       MSR_MAJOR);
 		err = -EBUSY;
@@ -279,7 +274,7 @@ out_class:
 		msr_device_destroy(i);
 	class_destroy(msr_class);
 out_chrdev:
-	unregister_chrdev(MSR_MAJOR, "cpu/msr");
+	__unregister_chrdev(MSR_MAJOR, 0, NR_CPUS, "cpu/msr");
 out:
 	return err;
 }