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[ALSA] dynamic minors (6/6): increase maximum number of sound cards

Browse source 
Modules: ALSA Core,Memalloc module,ALSA sequencer

With dynamic minor numbers, we can increase the number of sound cards.

This requires that the sequencer client numbers of some kernel drivers
are allocated dynamically, too.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
This commit is contained in:
Clemens Ladisch 2005-11-20 14:09:05 +01:00 • committed by Jaroslav Kysela
parent 204bdb1b50
commit d001544ded
6 changed files with 49 additions and 21 deletions
Download patch file Download diff file Expand all files Collapse all files

18
sound/core/init.c
View file

@ -338,7 +338,7 @@ int snd_card_free_in_thread(struct snd_card *card)
static void choose_default_id(struct snd_card *card)
{
int i, len, idx_flag = 0, loops = 8;
int i, len, idx_flag = 0, loops = SNDRV_CARDS;
char *id, *spos;
id = spos = card->shortname;
@ -380,9 +380,12 @@ static void choose_default_id(struct snd_card *card)
__change:
len = strlen(id);
if (idx_flag)
id[len-1]++;
else if ((size_t)len <= sizeof(card->id) - 3) {
if (idx_flag) {
if (id[len-1] != '9')
id[len-1]++;
else
id[len-1] = 'A';
} else if ((size_t)len <= sizeof(card->id) - 3) {
strcat(id, "_1");
idx_flag++;
} else {
@ -461,12 +464,12 @@ static void snd_card_info_read(struct snd_info_entry *entry,
read_lock(&snd_card_rwlock);
if ((card = snd_cards[idx]) != NULL) {
count++;
snd_iprintf(buffer, "%i [%-15s]: %s - %s\n",
snd_iprintf(buffer, "%2i [%-15s]: %s - %s\n",
idx,
card->id,
card->driver,
card->shortname);
snd_iprintf(buffer, " %s\n",
snd_iprintf(buffer, " %s\n",
card->longname);
}
read_unlock(&snd_card_rwlock);
@ -508,7 +511,8 @@ static void snd_card_module_info_read(struct snd_info_entry *entry,
for (idx = 0; idx < SNDRV_CARDS; idx++) {
read_lock(&snd_card_rwlock);
if ((card = snd_cards[idx]) != NULL)
snd_iprintf(buffer, "%i %s\n", idx, card->module->name);
snd_iprintf(buffer, "%2i %s\n",
idx, card->module->name);
read_unlock(&snd_card_rwlock);
}
}