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, 5 insertions, 3 deletions

diff --git a/include/sound/core.h b/include/sound/core.h
index fa1ca0127bab..a994bea09cd6 100644
--- a/include/sound/core.h
+++ b/include/sound/core.h
@@ -132,6 +132,7 @@ struct snd_card {
         int shutdown;                   /* this card is going down */
         int free_on_last_close;         /* free in context of file_release */
         wait_queue_head_t shutdown_sleep;
+        struct device *parent;
         struct device *dev;
 
 #ifdef CONFIG_PM
@@ -187,13 +188,14 @@ struct snd_minor {
         int device;                     /* device number */
         const struct file_operations *f_ops;    /* file operations */
         void *private_data;             /* private data for f_ops->open */
-        struct class_device *class_dev; /* class device for sysfs */
+        struct device *dev;             /* device for sysfs */
 };
 
 /* sound.c */
 
 extern int snd_major;
 extern int snd_ecards_limit;
+extern struct class *sound_class;
 
 void snd_request_card(int card);
 
@@ -203,7 +205,7 @@ int snd_register_device(int type, struct snd_card *card, int dev,
 int snd_unregister_device(int type, struct snd_card *card, int dev);
 void *snd_lookup_minor_data(unsigned int minor, int type);
 int snd_add_device_sysfs_file(int type, struct snd_card *card, int dev,
-                              const struct class_device_attribute *attr);
+                              struct device_attribute *attr);
 
 #ifdef CONFIG_SND_OSSEMUL
 int snd_register_oss_device(int type, struct snd_card *card, int dev,
@@ -255,7 +257,7 @@ int snd_card_file_add(struct snd_card *card, struct file *file);
 int snd_card_file_remove(struct snd_card *card, struct file *file);
 
 #ifndef snd_card_set_dev
-#define snd_card_set_dev(card,devptr) ((card)->dev = (devptr))
+#define snd_card_set_dev(card,devptr) ((card)->parent = (devptr))
 #endif
 
 /* device.c */