1 files changed, 28 insertions, 44 deletions

diff --git a/sound/core/sound.c b/sound/core/sound.c
index 798c24c2de20..a509f49fa0b4 100644
--- a/sound/core/sound.c
+++ b/sound/core/sound.c
@@ -59,7 +59,7 @@ MODULE_ALIAS_CHARDEV_MAJOR(CONFIG_SND_MAJOR);
  */
 int snd_ecards_limit;
 
-static struct list_head snd_minors_hash[SNDRV_CARDS];
+static struct snd_minor *snd_minors[SNDRV_OS_MINORS];
 
 static DECLARE_MUTEX(sound_mutex);
 
@@ -107,19 +107,6 @@ static void snd_request_other(int minor)
 
 #endif                          /* request_module support */
 
-static struct snd_minor *snd_minor_search(int minor)
-{
-        struct list_head *list;
-        struct snd_minor *mptr;
-
-        list_for_each(list, &snd_minors_hash[SNDRV_MINOR_CARD(minor)]) {
-                mptr = list_entry(list, struct snd_minor, list);
-                if (mptr->number == minor)
-                        return mptr;
-        }
-        return NULL;
-}
-
 static int snd_open(struct inode *inode, struct file *file)
 {
         int minor = iminor(inode);
@@ -139,11 +126,11 @@ static int snd_open(struct inode *inode, struct file *file)
                 }
         } else {
 #ifdef CONFIG_KMOD
-                if ((mptr = snd_minor_search(minor)) == NULL)
+                if ((mptr = snd_minors[minor]) == NULL)
                         snd_request_other(minor);
 #endif
         }
-        if (mptr == NULL && (mptr = snd_minor_search(minor)) == NULL)
+        if (mptr == NULL && (mptr = snd_minors[minor]) == NULL)
                 return -ENODEV;
         old_fops = file->f_op;
         file->f_op = fops_get(mptr->f_ops);
@@ -213,22 +200,22 @@ int snd_register_device(int type, struct snd_card *card, int dev,
         if (minor < 0)
                 return minor;
         snd_assert(name, return -EINVAL);
-        preg = kzalloc(sizeof(struct snd_minor) + strlen(name) + 1, GFP_KERNEL);
+        preg = kmalloc(sizeof(struct snd_minor) + strlen(name) + 1, GFP_KERNEL);
         if (preg == NULL)
                 return -ENOMEM;
-        preg->number = minor;
         preg->type = type;
+        preg->card = card ? card->number : -1;
         preg->device = dev;
         preg->f_ops = f_ops;
         strcpy(preg->name, name);
         down(&sound_mutex);
-        if (snd_minor_search(minor)) {
+        if (snd_minors[minor]) {
                 up(&sound_mutex);
                 kfree(preg);
                 return -EBUSY;
         }
-        list_add_tail(&preg->list, &snd_minors_hash[SNDRV_MINOR_CARD(minor)]);
-        if (strncmp(name, "controlC", 8) || card->number >= cards_limit)
+        snd_minors[minor] = preg;
+        if (type != SNDRV_DEVICE_TYPE_CONTROL || preg->card >= cards_limit)
                 devfs_mk_cdev(MKDEV(major, minor), S_IFCHR | device_mode, "snd/%s", name);
         if (card)
                 device = card->dev;
@@ -257,16 +244,17 @@ int snd_unregister_device(int type, struct snd_card *card, int dev)
         if (minor < 0)
                 return minor;
         down(&sound_mutex);
-        if ((mptr = snd_minor_search(minor)) == NULL) {
+        if ((mptr = snd_minors[minor]) == NULL) {
                 up(&sound_mutex);
                 return -EINVAL;
         }
 
-        if (strncmp(mptr->name, "controlC", 8) || card->number >= cards_limit) /* created in sound.c */
+        if (mptr->type != SNDRV_DEVICE_TYPE_CONTROL ||
+            mptr->card >= cards_limit)                  /* created in sound.c */
                 devfs_remove("snd/%s", mptr->name);
         class_device_destroy(sound_class, MKDEV(major, minor));
 
-        list_del(&mptr->list);
+        snd_minors[minor] = NULL;
         up(&sound_mutex);
         kfree(mptr);
         return 0;
@@ -302,23 +290,25 @@ static const char *snd_device_type_name(int type)
 
 static void snd_minor_info_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
 {
-        int card, device;
-        struct list_head *list;
+        int minor;
         struct snd_minor *mptr;
 
         down(&sound_mutex);
-        for (card = 0; card < SNDRV_CARDS; card++) {
-                list_for_each(list, &snd_minors_hash[card]) {
-                        mptr = list_entry(list, struct snd_minor, list);
-                        if (SNDRV_MINOR_DEVICE(mptr->number) != SNDRV_MINOR_GLOBAL) {
-                                if ((device = mptr->device) >= 0)
-                                        snd_iprintf(buffer, "%3i: [%i-%2i]: %s\n", mptr->number, card, device, snd_device_type_name(mptr->type));
-                                else
-                                        snd_iprintf(buffer, "%3i: [%i]   : %s\n", mptr->number, card, snd_device_type_name(mptr->type));
-                        } else {
-                                snd_iprintf(buffer, "%3i:       : %s\n", mptr->number, snd_device_type_name(mptr->type));
-                        }
-                }
+        for (minor = 0; minor < SNDRV_OS_MINORS; ++minor) {
+                if (!(mptr = snd_minors[minor]))
+                        continue;
+                if (mptr->card >= 0) {
+                        if (mptr->device >= 0)
+                                snd_iprintf(buffer, "%3i: [%i-%2i]: %s\n",
+                                            minor, mptr->card, mptr->device,
+                                            snd_device_type_name(mptr->type));
+                        else
+                                snd_iprintf(buffer, "%3i: [%i]   : %s\n",
+                                            minor, mptr->card,
+                                            snd_device_type_name(mptr->type));
+                } else
+                        snd_iprintf(buffer, "%3i:       : %s\n", minor,
+                                    snd_device_type_name(mptr->type));
         }
         up(&sound_mutex);
 }
@@ -354,15 +344,9 @@ int __exit snd_minor_info_done(void)
 static int __init alsa_sound_init(void)
 {
         short controlnum;
-        int err;
-        int card;
 
         snd_major = major;
         snd_ecards_limit = cards_limit;
-        for (card = 0; card < SNDRV_CARDS; card++)
-                INIT_LIST_HEAD(&snd_minors_hash[card]);
-        if ((err = snd_oss_init_module()) < 0)
-                return err;
         devfs_mk_dir("snd");
         if (register_chrdev(major, "alsa", &snd_fops)) {
                 snd_printk(KERN_ERR "unable to register native major device number %d\n", major);