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>

11 files changed, 53 insertions, 59 deletions

diff --git a/drivers/edac/edac_core.h b/drivers/edac/edac_core.h
index fe90cd4a7ebc..e48ab3108ad8 100644
--- a/drivers/edac/edac_core.h
+++ b/drivers/edac/edac_core.h
@@ -32,7 +32,6 @@
 #include <linux/completion.h>
 #include <linux/kobject.h>
 #include <linux/platform_device.h>
-#include <linux/sysdev.h>
 #include <linux/workqueue.h>
 #include <linux/edac.h>
 
@@ -243,8 +242,8 @@ struct edac_device_ctl_info {
          */
         struct edac_dev_sysfs_attribute *sysfs_attributes;
 
-        /* pointer to main 'edac' class in sysfs */
-        struct sysdev_class *edac_class;
+        /* pointer to main 'edac' subsys in sysfs */
+        struct bus_type *edac_subsys;
 
         /* the internal state of this controller instance */
         int op_state;
@@ -342,7 +341,7 @@ struct edac_pci_ctl_info {
 
         int pci_idx;
 
-        struct sysdev_class *edac_class;        /* pointer to class */
+        struct bus_type *edac_subsys;   /* pointer to subsystem */
 
         /* the internal state of this controller instance */
         int op_state;
diff --git a/drivers/edac/edac_device.c b/drivers/edac/edac_device.c
index c3f67437afb6..4b154593343a 100644
--- a/drivers/edac/edac_device.c
+++ b/drivers/edac/edac_device.c
@@ -23,7 +23,6 @@
 #include <linux/jiffies.h>
 #include <linux/spinlock.h>
 #include <linux/list.h>
-#include <linux/sysdev.h>
 #include <linux/ctype.h>
 #include <linux/workqueue.h>
 #include <asm/uaccess.h>
diff --git a/drivers/edac/edac_device_sysfs.c b/drivers/edac/edac_device_sysfs.c
index 86649df00285..b4ea185ccebf 100644
--- a/drivers/edac/edac_device_sysfs.c
+++ b/drivers/edac/edac_device_sysfs.c
@@ -1,5 +1,5 @@
 /*
- * file for managing the edac_device class of devices for EDAC
+ * file for managing the edac_device subsystem of devices for EDAC
  *
  * (C) 2007 SoftwareBitMaker 
  *
@@ -230,21 +230,21 @@ static struct kobj_type ktype_device_ctrl = {
  */
 int edac_device_register_sysfs_main_kobj(struct edac_device_ctl_info *edac_dev)
 {
-        struct sysdev_class *edac_class;
+        struct bus_type *edac_subsys;
         int err;
 
         debugf1("%s()\n", __func__);
 
         /* get the /sys/devices/system/edac reference */
-        edac_class = edac_get_sysfs_class();
-        if (edac_class == NULL) {
-                debugf1("%s() no edac_class error\n", __func__);
+        edac_subsys = edac_get_sysfs_subsys();
+        if (edac_subsys == NULL) {
+                debugf1("%s() no edac_subsys error\n", __func__);
                 err = -ENODEV;
                 goto err_out;
         }
 
-        /* Point to the 'edac_class' this instance 'reports' to */
-        edac_dev->edac_class = edac_class;
+        /* Point to the 'edac_subsys' this instance 'reports' to */
+        edac_dev->edac_subsys = edac_subsys;
 
         /* Init the devices's kobject */
         memset(&edac_dev->kobj, 0, sizeof(struct kobject));
@@ -261,7 +261,7 @@ int edac_device_register_sysfs_main_kobj(struct edac_device_ctl_info *edac_dev)
 
         /* register */
         err = kobject_init_and_add(&edac_dev->kobj, &ktype_device_ctrl,
-                                   &edac_class->kset.kobj,
+                                   &edac_subsys->dev_root->kobj,
                                    "%s", edac_dev->name);
         if (err) {
                 debugf1("%s()Failed to register '.../edac/%s'\n",
@@ -284,7 +284,7 @@ err_kobj_reg:
         module_put(edac_dev->owner);
 
 err_mod_get:
-        edac_put_sysfs_class();
+        edac_put_sysfs_subsys();
 
 err_out:
         return err;
@@ -308,7 +308,7 @@ void edac_device_unregister_sysfs_main_kobj(struct edac_device_ctl_info *dev)
          *   b) 'kfree' the memory
          */
         kobject_put(&dev->kobj);
-        edac_put_sysfs_class();
+        edac_put_sysfs_subsys();
 }
 
 /* edac_dev -> instance information */
diff --git a/drivers/edac/edac_mc.c b/drivers/edac/edac_mc.c
index d69144a09043..ca6c04d350ee 100644
--- a/drivers/edac/edac_mc.c
+++ b/drivers/edac/edac_mc.c
@@ -25,7 +25,6 @@
 #include <linux/jiffies.h>
 #include <linux/spinlock.h>
 #include <linux/list.h>
-#include <linux/sysdev.h>
 #include <linux/ctype.h>
 #include <linux/edac.h>
 #include <asm/uaccess.h>
diff --git a/drivers/edac/edac_mc_sysfs.c b/drivers/edac/edac_mc_sysfs.c
index 29ffa350bfbe..d56e63477d5c 100644
--- a/drivers/edac/edac_mc_sysfs.c
+++ b/drivers/edac/edac_mc_sysfs.c
@@ -1021,19 +1021,19 @@ void edac_remove_sysfs_mci_device(struct mem_ctl_info *mci)
 int edac_sysfs_setup_mc_kset(void)
 {
         int err = -EINVAL;
-        struct sysdev_class *edac_class;
+        struct bus_type *edac_subsys;
 
         debugf1("%s()\n", __func__);
 
-        /* get the /sys/devices/system/edac class reference */
-        edac_class = edac_get_sysfs_class();
-        if (edac_class == NULL) {
-                debugf1("%s() no edac_class error=%d\n", __func__, err);
+        /* get the /sys/devices/system/edac subsys reference */
+        edac_subsys = edac_get_sysfs_subsys();
+        if (edac_subsys == NULL) {
+                debugf1("%s() no edac_subsys error=%d\n", __func__, err);
                 goto fail_out;
         }
 
         /* Init the MC's kobject */
-        mc_kset = kset_create_and_add("mc", NULL, &edac_class->kset.kobj);
+        mc_kset = kset_create_and_add("mc", NULL, &edac_subsys->dev_root->kobj);
         if (!mc_kset) {
                 err = -ENOMEM;
                 debugf1("%s() Failed to register '.../edac/mc'\n", __func__);
@@ -1045,7 +1045,7 @@ int edac_sysfs_setup_mc_kset(void)
         return 0;
 
 fail_kset:
-        edac_put_sysfs_class();
+        edac_put_sysfs_subsys();
 
 fail_out:
         return err;
@@ -1059,6 +1059,6 @@ fail_out:
 void edac_sysfs_teardown_mc_kset(void)
 {
         kset_unregister(mc_kset);
-        edac_put_sysfs_class();
+        edac_put_sysfs_subsys();
 }
 
diff --git a/drivers/edac/edac_module.h b/drivers/edac/edac_module.h
index 17aabb7b90ec..00f81b47a51f 100644
--- a/drivers/edac/edac_module.h
+++ b/drivers/edac/edac_module.h
@@ -10,8 +10,6 @@
 #ifndef __EDAC_MODULE_H__
 #define __EDAC_MODULE_H__
 
-#include <linux/sysdev.h>
-
 #include "edac_core.h"
 
 /*
diff --git a/drivers/edac/edac_pci.c b/drivers/edac/edac_pci.c
index 2b378207d571..63af1c5673d1 100644
--- a/drivers/edac/edac_pci.c
+++ b/drivers/edac/edac_pci.c
@@ -19,7 +19,6 @@
 #include <linux/slab.h>
 #include <linux/spinlock.h>
 #include <linux/list.h>
-#include <linux/sysdev.h>
 #include <linux/ctype.h>
 #include <linux/workqueue.h>
 #include <asm/uaccess.h>
diff --git a/drivers/edac/edac_pci_sysfs.c b/drivers/edac/edac_pci_sysfs.c
index 495198ad059c..97f5064e3992 100644
--- a/drivers/edac/edac_pci_sysfs.c
+++ b/drivers/edac/edac_pci_sysfs.c
@@ -338,12 +338,12 @@ static struct kobj_type ktype_edac_pci_main_kobj = {
  * edac_pci_main_kobj_setup()
  *
  *      setup the sysfs for EDAC PCI attributes
- *      assumes edac_class has already been initialized
+ *      assumes edac_subsys has already been initialized
  */
 static int edac_pci_main_kobj_setup(void)
 {
         int err;
-        struct sysdev_class *edac_class;
+        struct bus_type *edac_subsys;
 
         debugf0("%s()\n", __func__);
 
@@ -354,9 +354,9 @@ static int edac_pci_main_kobj_setup(void)
         /* First time, so create the main kobject and its
          * controls and attributes
          */
-        edac_class = edac_get_sysfs_class();
-        if (edac_class == NULL) {
-                debugf1("%s() no edac_class\n", __func__);
+        edac_subsys = edac_get_sysfs_subsys();
+        if (edac_subsys == NULL) {
+                debugf1("%s() no edac_subsys\n", __func__);
                 err = -ENODEV;
                 goto decrement_count_fail;
         }
@@ -381,7 +381,7 @@ static int edac_pci_main_kobj_setup(void)
         /* Instanstiate the pci object */
         err = kobject_init_and_add(edac_pci_top_main_kobj,
                                    &ktype_edac_pci_main_kobj,
-                                   &edac_class->kset.kobj, "pci");
+                                   &edac_subsys->dev_root->kobj, "pci");
         if (err) {
                 debugf1("Failed to register '.../edac/pci'\n");
                 goto kobject_init_and_add_fail;
@@ -404,7 +404,7 @@ kzalloc_fail:
         module_put(THIS_MODULE);
 
 mod_get_fail:
-        edac_put_sysfs_class();
+        edac_put_sysfs_subsys();
 
 decrement_count_fail:
         /* if are on this error exit, nothing to tear down */
@@ -432,7 +432,7 @@ static void edac_pci_main_kobj_teardown(void)
                         __func__);
                 kobject_put(edac_pci_top_main_kobj);
         }
-        edac_put_sysfs_class();
+        edac_put_sysfs_subsys();
 }
 
 /*
diff --git a/drivers/edac/edac_stub.c b/drivers/edac/edac_stub.c
index 86ad2eee1201..670c4481453b 100644
--- a/drivers/edac/edac_stub.c
+++ b/drivers/edac/edac_stub.c
@@ -26,7 +26,7 @@ EXPORT_SYMBOL_GPL(edac_handlers);
 int edac_err_assert = 0;
 EXPORT_SYMBOL_GPL(edac_err_assert);
 
-static atomic_t edac_class_valid = ATOMIC_INIT(0);
+static atomic_t edac_subsys_valid = ATOMIC_INIT(0);
 
 /*
  * called to determine if there is an EDAC driver interested in
@@ -54,36 +54,37 @@ EXPORT_SYMBOL_GPL(edac_atomic_assert_error);
  * sysfs object: /sys/devices/system/edac
  *      need to export to other files
  */
-struct sysdev_class edac_class = {
+struct bus_type edac_subsys = {
         .name = "edac",
+        .dev_name = "edac",
 };
-EXPORT_SYMBOL_GPL(edac_class);
+EXPORT_SYMBOL_GPL(edac_subsys);
 
 /* return pointer to the 'edac' node in sysfs */
-struct sysdev_class *edac_get_sysfs_class(void)
+struct bus_type *edac_get_sysfs_subsys(void)
 {
         int err = 0;
 
-        if (atomic_read(&edac_class_valid))
+        if (atomic_read(&edac_subsys_valid))
                 goto out;
 
         /* create the /sys/devices/system/edac directory */
-        err = sysdev_class_register(&edac_class);
+        err = subsys_system_register(&edac_subsys, NULL);
         if (err) {
                 printk(KERN_ERR "Error registering toplevel EDAC sysfs dir\n");
                 return NULL;
         }
 
 out:
-        atomic_inc(&edac_class_valid);
-        return &edac_class;
+        atomic_inc(&edac_subsys_valid);
+        return &edac_subsys;
 }
-EXPORT_SYMBOL_GPL(edac_get_sysfs_class);
+EXPORT_SYMBOL_GPL(edac_get_sysfs_subsys);
 
-void edac_put_sysfs_class(void)
+void edac_put_sysfs_subsys(void)
 {
         /* last user unregisters it */
-        if (atomic_dec_and_test(&edac_class_valid))
-                sysdev_class_unregister(&edac_class);
+        if (atomic_dec_and_test(&edac_subsys_valid))
+                bus_unregister(&edac_subsys);
 }
-EXPORT_SYMBOL_GPL(edac_put_sysfs_class);
+EXPORT_SYMBOL_GPL(edac_put_sysfs_subsys);
diff --git a/drivers/edac/mce_amd_inj.c b/drivers/edac/mce_amd_inj.c
index 73c3e26a0bce..885e8ad8fdcf 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 struct edac_mce_attr *sysfs_attrs[] = { &mce_attr_status, &mce_attr_misc,
 
 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 @@ err_sysfs_create:
         kobject_del(mce_kobj);
 
 err_mce_kobj:
-        edac_put_sysfs_class();
+        edac_put_sysfs_subsys();
 
         return err;
 }
@@ -161,7 +160,7 @@ static void __exit edac_exit_mce_inject(void)
 
         kobject_del(mce_kobj);
 
-        edac_put_sysfs_class();
+        edac_put_sysfs_subsys();
 }
 
 module_init(edac_init_mce_inject);
diff --git a/include/linux/edac.h b/include/linux/edac.h
index 055b248bdd53..1cd3947987e5 100644
--- a/include/linux/edac.h
+++ b/include/linux/edac.h
@@ -13,7 +13,7 @@
 #define _LINUX_EDAC_H_
 
 #include <linux/atomic.h>
-#include <linux/sysdev.h>
+#include <linux/device.h>
 
 #define EDAC_OPSTATE_INVAL      -1
 #define EDAC_OPSTATE_POLL       0
@@ -23,12 +23,12 @@
 extern int edac_op_state;
 extern int edac_err_assert;
 extern atomic_t edac_handlers;
-extern struct sysdev_class edac_class;
+extern struct bus_type edac_subsys;
 
 extern int edac_handler_set(void);
 extern void edac_atomic_assert_error(void);
-extern struct sysdev_class *edac_get_sysfs_class(void);
-extern void edac_put_sysfs_class(void);
+extern struct bus_type *edac_get_sysfs_subsys(void);
+extern void edac_put_sysfs_subsys(void);
 
 static inline void opstate_init(void)
 {