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Diffstat (limited to 'sound/core/sound_oss.c')
-rw-r--r--sound/core/sound_oss.c64
1 files changed, 20 insertions, 44 deletions
diff --git a/sound/core/sound_oss.c b/sound/core/sound_oss.c
index 4d189ffaa764..afbfd8df1298 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 */