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-rw-r--r--include/sound/core.h5
-rw-r--r--sound/core/sound.c72
-rw-r--r--sound/core/sound_oss.c64
3 files changed, 49 insertions, 92 deletions
diff --git a/include/sound/core.h b/include/sound/core.h
index f557c8ac450..67b0a7e764e 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 798c24c2de2..a509f49fa0b 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 4d189ffaa76..afbfd8df129 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 */
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-16 09:51:20 +0000