diff options
Diffstat (limited to 'sound/core')
| -rw-r--r-- | sound/core/seq/seq.c | 4 | ||||
| -rw-r--r-- | sound/core/seq/seq_clientmgr.c | 57 |
2 files changed, 33 insertions, 28 deletions
diff --git a/sound/core/seq/seq.c b/sound/core/seq/seq.c index 24644150f24..20f954bc7aa 100644 --- a/sound/core/seq/seq.c +++ b/sound/core/seq/seq.c @@ -36,9 +36,9 @@ #include <sound/seq_device.h> #if defined(CONFIG_SND_SEQ_DUMMY_MODULE) -int seq_client_load[64] = {[0] = SNDRV_SEQ_CLIENT_DUMMY, [1 ... 63] = -1}; +int seq_client_load[15] = {[0] = SNDRV_SEQ_CLIENT_DUMMY, [1 ... 14] = -1}; #else -int seq_client_load[64] = {[0 ... 63] = -1}; +int seq_client_load[15] = {[0 ... 14] = -1}; #endif int seq_default_timer_class = SNDRV_TIMER_CLASS_GLOBAL; int seq_default_timer_sclass = SNDRV_TIMER_SCLASS_NONE; diff --git a/sound/core/seq/seq_clientmgr.c b/sound/core/seq/seq_clientmgr.c index 606d076f72f..fd2032eae21 100644 --- a/sound/core/seq/seq_clientmgr.c +++ b/sound/core/seq/seq_clientmgr.c @@ -47,9 +47,20 @@ * */ -/* range for dynamically allocated client numbers of kernel drivers */ -#define SNDRV_SEQ_DYNAMIC_CLIENT_BEGIN 16 -#define SNDRV_SEQ_DYNAMIC_CLIENT_END 48 +/* + * There are four ranges of client numbers (last two shared): + * 0..15: global clients + * 16..127: statically allocated client numbers for cards 0..27 + * 128..191: dynamically allocated client numbers for cards 28..31 + * 128..191: dynamically allocated client numbers for applications + */ + +/* number of kernel non-card clients */ +#define SNDRV_SEQ_GLOBAL_CLIENTS 16 +/* clients per cards, for static clients */ +#define SNDRV_SEQ_CLIENTS_PER_CARD 4 +/* dynamically allocated client numbers (both kernel drivers and user space) */ +#define SNDRV_SEQ_DYNAMIC_CLIENTS_BEGIN 128 #define SNDRV_SEQ_LFLG_INPUT 0x0001 #define SNDRV_SEQ_LFLG_OUTPUT 0x0002 @@ -143,14 +154,14 @@ struct snd_seq_client *snd_seq_client_use_ptr(int clientid) spin_unlock_irqrestore(&clients_lock, flags); #ifdef CONFIG_KMOD if (!in_interrupt() && current->fs->root) { - static char client_requested[64]; + static char client_requested[SNDRV_SEQ_GLOBAL_CLIENTS]; static char card_requested[SNDRV_CARDS]; - if (clientid < 64) { + if (clientid < SNDRV_SEQ_GLOBAL_CLIENTS) { int idx; if (! client_requested[clientid] && current->fs->root) { client_requested[clientid] = 1; - for (idx = 0; idx < 64; idx++) { + for (idx = 0; idx < 15; idx++) { if (seq_client_load[idx] < 0) break; if (seq_client_load[idx] == clientid) { @@ -160,8 +171,9 @@ struct snd_seq_client *snd_seq_client_use_ptr(int clientid) } } } - } else if (clientid >= 64 && clientid < 128) { - int card = (clientid - 64) / 4; + } else if (clientid < SNDRV_SEQ_DYNAMIC_CLIENTS_BEGIN) { + int card = (clientid - SNDRV_SEQ_GLOBAL_CLIENTS) / + SNDRV_SEQ_CLIENTS_PER_CARD; if (card < snd_ecards_limit) { if (! card_requested[card]) { card_requested[card] = 1; @@ -207,8 +219,7 @@ int __init client_init_data(void) } -static struct snd_seq_client *seq_create_client1(int client_index, int poolsize, - int kernel_client) +static struct snd_seq_client *seq_create_client1(int client_index, int poolsize) { unsigned long flags; int c; @@ -232,15 +243,9 @@ static struct snd_seq_client *seq_create_client1(int client_index, int poolsize, /* find free slot in the client table */ spin_lock_irqsave(&clients_lock, flags); if (client_index < 0) { - int cmin, cmax; - if (kernel_client) { - cmin = SNDRV_SEQ_DYNAMIC_CLIENT_BEGIN; - cmax = SNDRV_SEQ_DYNAMIC_CLIENT_END; - } else { - cmin = 128; - cmax = SNDRV_SEQ_MAX_CLIENTS; - } - for (c = cmin; c < cmax; c++) { + for (c = SNDRV_SEQ_DYNAMIC_CLIENTS_BEGIN; + c < SNDRV_SEQ_MAX_CLIENTS; + c++) { if (clienttab[c] || clienttablock[c]) continue; clienttab[client->number = c] = client; @@ -319,7 +324,7 @@ static int snd_seq_open(struct inode *inode, struct file *file) if (down_interruptible(®ister_mutex)) return -ERESTARTSYS; - client = seq_create_client1(-1, SNDRV_SEQ_DEFAULT_EVENTS, 0); + client = seq_create_client1(-1, SNDRV_SEQ_DEFAULT_EVENTS); if (client == NULL) { up(®ister_mutex); return -ENOMEM; /* failure code */ @@ -2220,23 +2225,23 @@ int snd_seq_create_kernel_client(struct snd_card *card, int client_index, snd_assert(! in_interrupt(), return -EBUSY); - if (card && client_index > 3) + if (card && client_index >= SNDRV_SEQ_CLIENTS_PER_CARD) return -EINVAL; - if (card == NULL && client_index > 63) + if (card == NULL && client_index >= SNDRV_SEQ_GLOBAL_CLIENTS) return -EINVAL; if (down_interruptible(®ister_mutex)) return -ERESTARTSYS; if (card) { - if (card->number < 16) - client_index += 64 + (card->number << 2); - else + client_index += SNDRV_SEQ_GLOBAL_CLIENTS + + card->number * SNDRV_SEQ_CLIENTS_PER_CARD; + if (client_index >= SNDRV_SEQ_DYNAMIC_CLIENTS_BEGIN) client_index = -1; } /* empty write queue as default */ - client = seq_create_client1(client_index, 0, 1); + client = seq_create_client1(client_index, 0); if (client == NULL) { up(®ister_mutex); return -EBUSY; /* failure code */ |