power: suspend - 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: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 17 insertions, 16 deletions

diff --git a/arch/powerpc/platforms/pseries/suspend.c b/arch/powerpc/platforms/pseries/suspend.c
index d3de0849f296..b84a8b2238dd 100644
--- a/arch/powerpc/platforms/pseries/suspend.c
+++ b/arch/powerpc/platforms/pseries/suspend.c
@@ -26,7 +26,7 @@
 #include <asm/rtas.h>
 
 static u64 stream_id;
-static struct sys_device suspend_sysdev;
+static struct device suspend_dev;
 static DECLARE_COMPLETION(suspend_work);
 static struct rtas_suspend_me_data suspend_data;
 static atomic_t suspending;
@@ -110,8 +110,8 @@ static int pseries_prepare_late(void)
 
 /**
  * store_hibernate - Initiate partition hibernation
- * @classdev:   sysdev class struct
- * @attr:               class device attribute struct
+ * @dev:                subsys root device
+ * @attr:               device attribute struct
  * @buf:                buffer
  * @count:              buffer size
  *
@@ -121,8 +121,8 @@ static int pseries_prepare_late(void)
  * Return value:
  *      number of bytes printed to buffer / other on failure
  **/
-static ssize_t store_hibernate(struct sysdev_class *classdev,
-                               struct sysdev_class_attribute *attr,
+static ssize_t store_hibernate(struct device *dev,
+                               struct device_attribute *attr,
                                const char *buf, size_t count)
 {
         int rc;
@@ -148,10 +148,11 @@ static ssize_t store_hibernate(struct sysdev_class *classdev,
         return rc;
 }
 
-static SYSDEV_CLASS_ATTR(hibernate, S_IWUSR, NULL, store_hibernate);
+static DEVICE_ATTR(hibernate, S_IWUSR, NULL, store_hibernate);
 
-static struct sysdev_class suspend_sysdev_class = {
+static struct bus_type suspend_subsys = {
         .name = "power",
+        .dev_name = "power",
 };
 
 static const struct platform_suspend_ops pseries_suspend_ops = {
@@ -167,23 +168,23 @@ static const struct platform_suspend_ops pseries_suspend_ops = {
  * Return value:
  *      0 on success / other on failure
  **/
-static int pseries_suspend_sysfs_register(struct sys_device *sysdev)
+static int pseries_suspend_sysfs_register(struct device *dev)
 {
         int rc;
 
-        if ((rc = sysdev_class_register(&suspend_sysdev_class)))
+        if ((rc = subsys_system_register(&suspend_subsys, NULL)))
                 return rc;
 
-        sysdev->id = 0;
-        sysdev->cls = &suspend_sysdev_class;
+        dev->id = 0;
+        dev->bus = &suspend_subsys;
 
-        if ((rc = sysdev_class_create_file(&suspend_sysdev_class, &attr_hibernate)))
-                goto class_unregister;
+        if ((rc = device_create_file(suspend_subsys.dev_root, &dev_attr_hibernate)))
+                goto subsys_unregister;
 
         return 0;
 
-class_unregister:
-        sysdev_class_unregister(&suspend_sysdev_class);
+subsys_unregister:
+        bus_unregister(&suspend_subsys);
         return rc;
 }
 
@@ -204,7 +205,7 @@ static int __init pseries_suspend_init(void)
         if (suspend_data.token == RTAS_UNKNOWN_SERVICE)
                 return 0;
 
-        if ((rc = pseries_suspend_sysfs_register(&suspend_sysdev)))
+        if ((rc = pseries_suspend_sysfs_register(&suspend_dev)))
                 return rc;
 
         ppc_md.suspend_disable_cpu = pseries_suspend_cpu;