Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-2.6

This can be broken down into these major areas:
 - Documentation updates (language translations and fixes, as
   well as kobject and kset documenatation updates.)
 - major kset/kobject/ktype rework and fixes.  This cleans up the
   kset and kobject and ktype relationship and architecture,
   making sense of things now, and good documenation and samples
   are provided for others to use.  Also the attributes for
   kobjects are much easier to handle now.  This cleaned up a LOT
   of code all through the kernel, making kobjects easier to use
   if you want to.
 - struct bus_type has been reworked to now handle the lifetime
   rules properly, as the kobject is properly dynamic.
 - struct driver has also been reworked, and now the lifetime
   issues are resolved.
 - the block subsystem has been converted to use struct device
   now, and not "raw" kobjects.  This patch has been in the -mm
   tree for over a year now, and finally all the issues are
   worked out with it.  Older distros now properly work with new
   kernels, and no userspace updates are needed at all.
 - nozomi driver is added.  This has also been in -mm for a long
   time, and many people have asked for it to go in.  It is now
   in good enough shape to do so.
 - lots of class_device conversions to use struct device instead.
   The tree is almost all cleaned up now, only SCSI and IB is the
   remaining code to fix up...

* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-2.6: (196 commits)
  Driver core: coding style fixes
  Kobject: fix coding style issues in kobject c files
  Kobject: fix coding style issues in kobject.h
  Driver core: fix coding style issues in device.h
  spi: use class iteration api
  scsi: use class iteration api
  rtc: use class iteration api
  power supply : use class iteration api
  ieee1394: use class iteration api
  Driver Core: add class iteration api
  Driver core: Cleanup get_device_parent() in device_add() and device_move()
  UIO: constify function pointer tables
  Driver Core: constify the name passed to platform_device_register_simple
  driver core: fix build with SYSFS=n
  sysfs: make SYSFS_DEPRECATED depend on SYSFS
  Driver core: use LIST_HEAD instead of call to INIT_LIST_HEAD in __init
  kobject: add sample code for how to use ksets/ktypes/kobjects
  kobject: add sample code for how to use kobjects in a simple manner.
  kobject: update the kobject/kset documentation
  kobject: remove old, outdated documentation.
  ...

1 files changed, 33 insertions, 47 deletions

diff --git a/drivers/char/hvc_console.c b/drivers/char/hvc_console.c
index 8252f8668538..480fae29c9b2 100644
--- a/drivers/char/hvc_console.c
+++ b/drivers/char/hvc_console.c
@@ -27,7 +27,7 @@
 #include <linux/init.h>
 #include <linux/kbd_kern.h>
 #include <linux/kernel.h>
-#include <linux/kobject.h>
+#include <linux/kref.h>
 #include <linux/kthread.h>
 #include <linux/list.h>
 #include <linux/module.h>
@@ -89,7 +89,7 @@ struct hvc_struct {
         int irq_requested;
         int irq;
         struct list_head next;
-        struct kobject kobj; /* ref count & hvc_struct lifetime */
+        struct kref kref; /* ref count & hvc_struct lifetime */
 };
 
 /* dynamic list of hvc_struct instances */
@@ -110,7 +110,7 @@ static int last_hvc = -1;
 
 /*
  * Do not call this function with either the hvc_structs_lock or the hvc_struct
- * lock held.  If successful, this function increments the kobject reference
+ * lock held.  If successful, this function increments the kref reference
  * count against the target hvc_struct so it should be released when finished.
  */
 static struct hvc_struct *hvc_get_by_index(int index)
@@ -123,7 +123,7 @@ static struct hvc_struct *hvc_get_by_index(int index)
         list_for_each_entry(hp, &hvc_structs, next) {
                 spin_lock_irqsave(&hp->lock, flags);
                 if (hp->index == index) {
-                        kobject_get(&hp->kobj);
+                        kref_get(&hp->kref);
                         spin_unlock_irqrestore(&hp->lock, flags);
                         spin_unlock(&hvc_structs_lock);
                         return hp;
@@ -242,6 +242,23 @@ static int __init hvc_console_init(void)
 }
 console_initcall(hvc_console_init);
 
+/* callback when the kboject ref count reaches zero. */
+static void destroy_hvc_struct(struct kref *kref)
+{
+        struct hvc_struct *hp = container_of(kref, struct hvc_struct, kref);
+        unsigned long flags;
+
+        spin_lock(&hvc_structs_lock);
+
+        spin_lock_irqsave(&hp->lock, flags);
+        list_del(&(hp->next));
+        spin_unlock_irqrestore(&hp->lock, flags);
+
+        spin_unlock(&hvc_structs_lock);
+
+        kfree(hp);
+}
+
 /*
  * hvc_instantiate() is an early console discovery method which locates
  * consoles * prior to the vio subsystem discovering them.  Hotplugged
@@ -261,7 +278,7 @@ int hvc_instantiate(uint32_t vtermno, int index, struct hv_ops *ops)
         /* make sure no no tty has been registered in this index */
         hp = hvc_get_by_index(index);
         if (hp) {
-                kobject_put(&hp->kobj);
+                kref_put(&hp->kref, destroy_hvc_struct);
                 return -1;
         }
 
@@ -318,9 +335,8 @@ static int hvc_open(struct tty_struct *tty, struct file * filp)
         unsigned long flags;
         int irq = 0;
         int rc = 0;
-        struct kobject *kobjp;
 
-        /* Auto increments kobject reference if found. */
+        /* Auto increments kref reference if found. */
         if (!(hp = hvc_get_by_index(tty->index)))
                 return -ENODEV;
 
@@ -341,8 +357,6 @@ static int hvc_open(struct tty_struct *tty, struct file * filp)
         if (irq)
                 hp->irq_requested = 1;
 
-        kobjp = &hp->kobj;
-
         spin_unlock_irqrestore(&hp->lock, flags);
         /* check error, fallback to non-irq */
         if (irq)
@@ -352,7 +366,7 @@ static int hvc_open(struct tty_struct *tty, struct file * filp)
          * If the request_irq() fails and we return an error.  The tty layer
          * will call hvc_close() after a failed open but we don't want to clean
          * up there so we'll clean up here and clear out the previously set
-         * tty fields and return the kobject reference.
+         * tty fields and return the kref reference.
          */
         if (rc) {
                 spin_lock_irqsave(&hp->lock, flags);
@@ -360,7 +374,7 @@ static int hvc_open(struct tty_struct *tty, struct file * filp)
                 hp->irq_requested = 0;
                 spin_unlock_irqrestore(&hp->lock, flags);
                 tty->driver_data = NULL;
-                kobject_put(kobjp);
+                kref_put(&hp->kref, destroy_hvc_struct);
                 printk(KERN_ERR "hvc_open: request_irq failed with rc %d.\n", rc);
         }
         /* Force wakeup of the polling thread */
@@ -372,7 +386,6 @@ static int hvc_open(struct tty_struct *tty, struct file * filp)
 static void hvc_close(struct tty_struct *tty, struct file * filp)
 {
         struct hvc_struct *hp;
-        struct kobject *kobjp;
         int irq = 0;
         unsigned long flags;
 
@@ -382,7 +395,7 @@ static void hvc_close(struct tty_struct *tty, struct file * filp)
         /*
          * No driver_data means that this close was issued after a failed
          * hvc_open by the tty layer's release_dev() function and we can just
-         * exit cleanly because the kobject reference wasn't made.
+         * exit cleanly because the kref reference wasn't made.
          */
         if (!tty->driver_data)
                 return;
@@ -390,7 +403,6 @@ static void hvc_close(struct tty_struct *tty, struct file * filp)
         hp = tty->driver_data;
         spin_lock_irqsave(&hp->lock, flags);
 
-        kobjp = &hp->kobj;
         if (--hp->count == 0) {
                 if (hp->irq_requested)
                         irq = hp->irq;
@@ -417,7 +429,7 @@ static void hvc_close(struct tty_struct *tty, struct file * filp)
                 spin_unlock_irqrestore(&hp->lock, flags);
         }
 
-        kobject_put(kobjp);
+        kref_put(&hp->kref, destroy_hvc_struct);
 }
 
 static void hvc_hangup(struct tty_struct *tty)
@@ -426,7 +438,6 @@ static void hvc_hangup(struct tty_struct *tty)
         unsigned long flags;
         int irq = 0;
         int temp_open_count;
-        struct kobject *kobjp;
 
         if (!hp)
                 return;
@@ -443,7 +454,6 @@ static void hvc_hangup(struct tty_struct *tty)
                 return;
         }
 
-        kobjp = &hp->kobj;
         temp_open_count = hp->count;
         hp->count = 0;
         hp->n_outbuf = 0;
@@ -457,7 +467,7 @@ static void hvc_hangup(struct tty_struct *tty)
                 free_irq(irq, hp);
         while(temp_open_count) {
                 --temp_open_count;
-                kobject_put(kobjp);
+                kref_put(&hp->kref, destroy_hvc_struct);
         }
 }
 
@@ -729,27 +739,6 @@ static const struct tty_operations hvc_ops = {
         .chars_in_buffer = hvc_chars_in_buffer,
 };
 
-/* callback when the kboject ref count reaches zero. */
-static void destroy_hvc_struct(struct kobject *kobj)
-{
-        struct hvc_struct *hp = container_of(kobj, struct hvc_struct, kobj);
-        unsigned long flags;
-
-        spin_lock(&hvc_structs_lock);
-
-        spin_lock_irqsave(&hp->lock, flags);
-        list_del(&(hp->next));
-        spin_unlock_irqrestore(&hp->lock, flags);
-
-        spin_unlock(&hvc_structs_lock);
-
-        kfree(hp);
-}
-
-static struct kobj_type hvc_kobj_type = {
-        .release = destroy_hvc_struct,
-};
-
 struct hvc_struct __devinit *hvc_alloc(uint32_t vtermno, int irq,
                                         struct hv_ops *ops, int outbuf_size)
 {
@@ -776,8 +765,7 @@ struct hvc_struct __devinit *hvc_alloc(uint32_t vtermno, int irq,
         hp->outbuf_size = outbuf_size;
         hp->outbuf = &((char *)hp)[ALIGN(sizeof(*hp), sizeof(long))];
 
-        kobject_init(&hp->kobj);
-        hp->kobj.ktype = &hvc_kobj_type;
+        kref_init(&hp->kref);
 
         spin_lock_init(&hp->lock);
         spin_lock(&hvc_structs_lock);
@@ -806,12 +794,10 @@ struct hvc_struct __devinit *hvc_alloc(uint32_t vtermno, int irq,
 int __devexit hvc_remove(struct hvc_struct *hp)
 {
         unsigned long flags;
-        struct kobject *kobjp;
         struct tty_struct *tty;
 
         spin_lock_irqsave(&hp->lock, flags);
         tty = hp->tty;
-        kobjp = &hp->kobj;
 
         if (hp->index < MAX_NR_HVC_CONSOLES)
                 vtermnos[hp->index] = -1;
@@ -821,12 +807,12 @@ int __devexit hvc_remove(struct hvc_struct *hp)
         spin_unlock_irqrestore(&hp->lock, flags);
 
         /*
-         * We 'put' the instance that was grabbed when the kobject instance
-         * was initialized using kobject_init().  Let the last holder of this
-         * kobject cause it to be removed, which will probably be the tty_hangup
+         * We 'put' the instance that was grabbed when the kref instance
+         * was initialized using kref_init().  Let the last holder of this
+         * kref cause it to be removed, which will probably be the tty_hangup
          * below.
          */
-        kobject_put(kobjp);
+        kref_put(&hp->kref, destroy_hvc_struct);
 
         /*
          * This function call will auto chain call hvc_hangup.  The tty should