Driver Core: x86: add nodename for cpuid and msr drivers.

This adds support to the x86 cpuid and msr drivers to report the proper
device name to userspace for their devices.

Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Jan Blunck <jblunck@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 6 insertions, 0 deletions

diff --git a/arch/x86/kernel/cpuid.c b/arch/x86/kernel/cpuid.c
index 2ac1f0c2beb3..b07af8861244 100644
--- a/arch/x86/kernel/cpuid.c
+++ b/arch/x86/kernel/cpuid.c
@@ -182,6 +182,11 @@ static struct notifier_block __refdata cpuid_class_cpu_notifier =
         .notifier_call = cpuid_class_cpu_callback,
 };
 
+static char *cpuid_nodename(struct device *dev)
+{
+        return kasprintf(GFP_KERNEL, "cpu/%u/cpuid", MINOR(dev->devt));
+}
+
 static int __init cpuid_init(void)
 {
         int i, err = 0;
@@ -198,6 +203,7 @@ static int __init cpuid_init(void)
                 err = PTR_ERR(cpuid_class);
                 goto out_chrdev;
         }
+        cpuid_class->nodename = cpuid_nodename;
         for_each_online_cpu(i) {
                 err = cpuid_device_create(i);
                 if (err != 0)