diff options
| -rw-r--r-- | include/sound/core.h | 5 | ||||
| -rw-r--r-- | sound/core/sound.c | 72 | ||||
| -rw-r--r-- | sound/core/sound_oss.c | 64 |
3 files changed, 49 insertions, 92 deletions
diff --git a/include/sound/core.h b/include/sound/core.h index f557c8a..67b0a7e 100644 --- a/include/sound/core.h +++ b/include/sound/core.h @@ -183,9 +183,8 @@ static inline int snd_power_wait(struct snd_card *card, unsigned int state, stru #endif /* CONFIG_PM */ struct snd_minor { - struct list_head list; /* list of all minors per card */ - int number; /* minor number */ int type; /* SNDRV_DEVICE_TYPE_XXX */ + int card; /* card number */ int device; /* device number */ struct file_operations *f_ops; /* file operations */ char name[0]; /* device name (keep at the end of @@ -217,11 +216,9 @@ int snd_minor_info_done(void); #ifdef CONFIG_SND_OSSEMUL int snd_minor_info_oss_init(void); int snd_minor_info_oss_done(void); -int snd_oss_init_module(void); #else #define snd_minor_info_oss_init() /*NOP*/ #define snd_minor_info_oss_done() /*NOP*/ -#define snd_oss_init_module() 0 #endif /* memory.c */ diff --git a/sound/core/sound.c b/sound/core/sound.c index 798c24c..a509f49 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); diff --git a/sound/core/sound_oss.c b/sound/core/sound_oss.c index 4d189ff..afbfd8d 100644 --- a/sound/core/sound_oss.c +++ b/sound/core/sound_oss.c @@ -35,25 +35,12 @@ #include <sound/info.h> #include <linux/sound.h> -#define SNDRV_OS_MINORS 256 +#define SNDRV_OSS_MINORS 128 -static struct list_head snd_oss_minors_hash[SNDRV_CARDS]; +static struct snd_minor *snd_oss_minors[SNDRV_OSS_MINORS]; static DECLARE_MUTEX(sound_oss_mutex); -static struct snd_minor *snd_oss_minor_search(int minor) -{ - struct list_head *list; - struct snd_minor *mptr; - - list_for_each(list, &snd_oss_minors_hash[SNDRV_MINOR_OSS_CARD(minor)]) { - mptr = list_entry(list, struct snd_minor, list); - if (mptr->number == minor) - return mptr; - } - return NULL; -} - static int snd_oss_kernel_minor(int type, struct snd_card *card, int dev) { int minor; @@ -86,7 +73,7 @@ static int snd_oss_kernel_minor(int type, struct snd_card *card, int dev) default: return -EINVAL; } - snd_assert(minor >= 0 && minor < SNDRV_OS_MINORS, return -EINVAL); + snd_assert(minor >= 0 && minor < SNDRV_OSS_MINORS, return -EINVAL); return minor; } @@ -103,15 +90,15 @@ int snd_register_oss_device(int type, struct snd_card *card, int dev, if (minor < 0) return minor; - preg = kzalloc(sizeof(struct snd_minor), GFP_KERNEL); + preg = kmalloc(sizeof(struct snd_minor), 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; down(&sound_oss_mutex); - list_add_tail(&preg->list, &snd_oss_minors_hash[cidx]); + snd_oss_minors[minor] = preg; minor_unit = SNDRV_MINOR_OSS_DEVICE(minor); switch (minor_unit) { case SNDRV_MINOR_OSS_PCM: @@ -143,7 +130,7 @@ int snd_register_oss_device(int type, struct snd_card *card, int dev, unregister_sound_special(register2); if (register1 >= 0) unregister_sound_special(register1); - list_del(&preg->list); + snd_oss_minors[minor] = NULL; up(&sound_oss_mutex); kfree(preg); return -EBUSY; @@ -159,7 +146,7 @@ int snd_unregister_oss_device(int type, struct snd_card *card, int dev) if (minor < 0) return minor; down(&sound_oss_mutex); - mptr = snd_oss_minor_search(minor); + mptr = snd_oss_minors[minor]; if (mptr == NULL) { up(&sound_oss_mutex); return -ENOENT; @@ -178,7 +165,7 @@ int snd_unregister_oss_device(int type, struct snd_card *card, int dev) } if (track2 >= 0) unregister_sound_special(track2); - list_del(&mptr->list); + snd_oss_minors[minor] = NULL; up(&sound_oss_mutex); kfree(mptr); return 0; @@ -214,22 +201,20 @@ static const char *snd_oss_device_type_name(int type) static void snd_minor_info_oss_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer) { - int card, dev; - struct list_head *list; + int minor; struct snd_minor *mptr; down(&sound_oss_mutex); - for (card = 0; card < SNDRV_CARDS; card++) { - list_for_each(list, &snd_oss_minors_hash[card]) { - mptr = list_entry(list, struct snd_minor, list); - dev = SNDRV_MINOR_OSS_DEVICE(mptr->number); - if (dev != SNDRV_MINOR_OSS_SNDSTAT && - dev != SNDRV_MINOR_OSS_SEQUENCER && - dev != SNDRV_MINOR_OSS_MUSIC) - snd_iprintf(buffer, "%3i: [%i-%2i]: %s\n", mptr->number, card, dev, snd_oss_device_type_name(mptr->type)); - else - snd_iprintf(buffer, "%3i: : %s\n", mptr->number, snd_oss_device_type_name(mptr->type)); - } + for (minor = 0; minor < SNDRV_OSS_MINORS; ++minor) { + if (!(mptr = snd_oss_minors[minor])) + continue; + if (mptr->card >= 0) + snd_iprintf(buffer, "%3i: [%i-%2i]: %s\n", minor, + mptr->card, mptr->device, + snd_oss_device_type_name(mptr->type)); + else + snd_iprintf(buffer, "%3i: : %s\n", minor, + snd_oss_device_type_name(mptr->type)); } up(&sound_oss_mutex); } @@ -264,13 +249,4 @@ int __exit snd_minor_info_oss_done(void) return 0; } -int __init snd_oss_init_module(void) -{ - int card; - - for (card = 0; card < SNDRV_CARDS; card++) - INIT_LIST_HEAD(&snd_oss_minors_hash[card]); - return 0; -} - #endif /* CONFIG_SND_OSSEMUL */ |
