Driver core: convert sound core to use struct device

Converts from using struct "class_device" to "struct device" making
everything show up properly in /sys/devices/ with symlinks from the
/sys/class directory.

It also makes the struct sound_card to show up as a "real" device
where all the different sound class devices are placed as childs
and different card attribute files can hang off of. /sys/class/sound is
still a flat directory, but the symlink targets of all devices belonging
to the same card, point the the /sys/devices tree below the new card
device object.

Thanks to Kay for the updates to this patch.

Signed-off-by: Kay Sievers <kay.sievers@novell.com>
Acked-by: Jaroslav Kysela <perex@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 9 insertions, 13 deletions

diff --git a/sound/core/sound.c b/sound/core/sound.c
index efa476c5210a..282742022de6 100644
--- a/sound/core/sound.c
+++ b/sound/core/sound.c
@@ -61,9 +61,6 @@ EXPORT_SYMBOL(snd_ecards_limit);
 static struct snd_minor *snd_minors[SNDRV_OS_MINORS];
 static DEFINE_MUTEX(sound_mutex);
 
-extern struct class *sound_class;
-
-
 #ifdef CONFIG_KMOD
 
 /**
@@ -268,11 +265,10 @@ int snd_register_device(int type, struct snd_card *card, int dev,
         snd_minors[minor] = preg;
         if (card)
                 device = card->dev;
-        preg->class_dev = class_device_create(sound_class, NULL,
-                                              MKDEV(major, minor),
-                                              device, "%s", name);
-        if (preg->class_dev)
-                class_set_devdata(preg->class_dev, private_data);
+        preg->dev = device_create(sound_class, device, MKDEV(major, minor),
+                                  "%s", name);
+        if (preg->dev)
+                dev_set_drvdata(preg->dev, private_data);
 
         mutex_unlock(&sound_mutex);
         return 0;
@@ -320,7 +316,7 @@ int snd_unregister_device(int type, struct snd_card *card, int dev)
                 return -EINVAL;
         }
 
-        class_device_destroy(sound_class, MKDEV(major, minor));
+        device_destroy(sound_class, MKDEV(major, minor));
 
         kfree(snd_minors[minor]);
         snd_minors[minor] = NULL;
@@ -331,15 +327,15 @@ int snd_unregister_device(int type, struct snd_card *card, int dev)
 EXPORT_SYMBOL(snd_unregister_device);
 
 int snd_add_device_sysfs_file(int type, struct snd_card *card, int dev,
-                              const struct class_device_attribute *attr)
+                              struct device_attribute *attr)
 {
         int minor, ret = -EINVAL;
-        struct class_device *cdev;
+        struct device *d;
 
         mutex_lock(&sound_mutex);
         minor = find_snd_minor(type, card, dev);
-        if (minor >= 0 && (cdev = snd_minors[minor]->class_dev) != NULL)
-                ret = class_device_create_file(cdev, attr);
+        if (minor >= 0 && (d = snd_minors[minor]->dev) != NULL)
+                ret = device_create_file(d, attr);
         mutex_unlock(&sound_mutex);
         return ret;