edac: convert sysdev_class to a regular subsystem

After all sysdev classes are ported to regular driver core entities, the
sysdev implementation will be entirely removed from the kernel.

Cc: Doug Thompson <dougthompson@xmission.com>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: Lucas De Marchi <lucas.demarchi@profusion.mobi>
Cc: Borislav Petkov <borislav.petkov@amd.com>
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/edac/mce_amd_inj.c b/drivers/edac/mce_amd_inj.c
index 73c3e26..885e8ad 100644
--- a/drivers/edac/mce_amd_inj.c
+++ b/drivers/edac/mce_amd_inj.c
@@ -11,7 +11,6 @@
  */
 
 #include <linux/kobject.h>
-#include <linux/sysdev.h>
 #include <linux/edac.h>
 #include <linux/module.h>
 #include <asm/mce.h>
@@ -116,14 +115,14 @@
 
 static int __init edac_init_mce_inject(void)
 {
-	struct sysdev_class *edac_class = NULL;
+	struct bus_type *edac_subsys = NULL;
 	int i, err = 0;
 
-	edac_class = edac_get_sysfs_class();
-	if (!edac_class)
+	edac_subsys = edac_get_sysfs_subsys();
+	if (!edac_subsys)
 		return -EINVAL;
 
-	mce_kobj = kobject_create_and_add("mce", &edac_class->kset.kobj);
+	mce_kobj = kobject_create_and_add("mce", &edac_subsys->dev_root->kobj);
 	if (!mce_kobj) {
 		printk(KERN_ERR "Error creating a mce kset.\n");
 		err = -ENOMEM;
@@ -147,7 +146,7 @@
 	kobject_del(mce_kobj);
 
 err_mce_kobj:
-	edac_put_sysfs_class();
+	edac_put_sysfs_subsys();
 
 	return err;
 }
@@ -161,7 +160,7 @@
 
 	kobject_del(mce_kobj);
 
-	edac_put_sysfs_class();
+	edac_put_sysfs_subsys();
 }
 
 module_init(edac_init_mce_inject);