EDAC: Export edac sysfs class to users.

Move toplevel sysfs class to the stub and make it available to
non-modularized code too. Add proper refcounting of its users and move
the registration functionality into the reference counting routines.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>

1 files changed, 10 insertions, 6 deletions

diff --git a/drivers/edac/edac_device_sysfs.c b/drivers/edac/edac_device_sysfs.c
index 070968178a24..2941dca91aae 100644
--- a/drivers/edac/edac_device_sysfs.c
+++ b/drivers/edac/edac_device_sysfs.c
@@ -13,6 +13,7 @@
 #include <linux/ctype.h>
 #include <linux/module.h>
 #include <linux/slab.h>
+#include <linux/edac.h>
 
 #include "edac_core.h"
 #include "edac_module.h"
@@ -235,7 +236,7 @@ int edac_device_register_sysfs_main_kobj(struct edac_device_ctl_info *edac_dev)
         debugf1("%s()\n", __func__);
 
         /* get the /sys/devices/system/edac reference */
-        edac_class = edac_get_edac_class();
+        edac_class = edac_get_sysfs_class();
         if (edac_class == NULL) {
                 debugf1("%s() no edac_class error\n", __func__);
                 err = -ENODEV;
@@ -255,7 +256,7 @@ int edac_device_register_sysfs_main_kobj(struct edac_device_ctl_info *edac_dev)
 
         if (!try_module_get(edac_dev->owner)) {
                 err = -ENODEV;
-                goto err_out;
+                goto err_mod_get;
         }
 
         /* register */
@@ -282,6 +283,9 @@ int edac_device_register_sysfs_main_kobj(struct edac_device_ctl_info *edac_dev)
 err_kobj_reg:
         module_put(edac_dev->owner);
 
+err_mod_get:
+        edac_put_sysfs_class();
+
 err_out:
         return err;
 }
@@ -290,12 +294,11 @@ err_out:
  * edac_device_unregister_sysfs_main_kobj:
  *      the '..../edac/<name>' kobject
  */
-void edac_device_unregister_sysfs_main_kobj(
-                                        struct edac_device_ctl_info *edac_dev)
+void edac_device_unregister_sysfs_main_kobj(struct edac_device_ctl_info *dev)
 {
         debugf0("%s()\n", __func__);
         debugf4("%s() name of kobject is: %s\n",
-                __func__, kobject_name(&edac_dev->kobj));
+                __func__, kobject_name(&dev->kobj));
 
         /*
          * Unregister the edac device's kobject and
@@ -304,7 +307,8 @@ void edac_device_unregister_sysfs_main_kobj(
          *   a) module_put() this module
          *   b) 'kfree' the memory
          */
-        kobject_put(&edac_dev->kobj);
+        kobject_put(&dev->kobj);
+        edac_put_sysfs_class();
 }
 
 /* edac_dev -> instance information */