diff options
Diffstat (limited to 'sound/core/seq/seq_clientmgr.c')
| -rw-r--r-- | sound/core/seq/seq_clientmgr.c | 31 |
1 files changed, 25 insertions, 6 deletions
diff --git a/sound/core/seq/seq_clientmgr.c b/sound/core/seq/seq_clientmgr.c index 95bd5ae92b92..2a9c6b316b14 100644 --- a/sound/core/seq/seq_clientmgr.c +++ b/sound/core/seq/seq_clientmgr.c @@ -47,6 +47,10 @@ * */ +/* range for dynamically allocated client numbers of kernel drivers */ +#define SNDRV_SEQ_DYNAMIC_CLIENT_BEGIN 16 +#define SNDRV_SEQ_DYNAMIC_CLIENT_END 48 + #define SNDRV_SEQ_LFLG_INPUT 0x0001 #define SNDRV_SEQ_LFLG_OUTPUT 0x0002 #define SNDRV_SEQ_LFLG_OPEN (SNDRV_SEQ_LFLG_INPUT|SNDRV_SEQ_LFLG_OUTPUT) @@ -203,7 +207,8 @@ int __init client_init_data(void) } -static struct snd_seq_client *seq_create_client1(int client_index, int poolsize) +static struct snd_seq_client *seq_create_client1(int client_index, int poolsize, + int kernel_client) { unsigned long flags; int c; @@ -227,7 +232,15 @@ 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) { - for (c = 128; c < SNDRV_SEQ_MAX_CLIENTS; c++) { + 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++) { if (clienttab[c] || clienttablock[c]) continue; clienttab[client->number = c] = client; @@ -306,7 +319,7 @@ 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); + client = seq_create_client1(-1, SNDRV_SEQ_DEFAULT_EVENTS, 0); if (client == NULL) { up(®ister_mutex); return -ENOMEM; /* failure code */ @@ -2212,13 +2225,19 @@ int snd_seq_create_kernel_client(struct snd_card *card, int client_index, return -EINVAL; if (card == NULL && client_index > 63) return -EINVAL; - if (card) - client_index += 64 + (card->number << 2); if (down_interruptible(®ister_mutex)) return -ERESTARTSYS; + + if (card) { + if (card->number < 16) + client_index += 64 + (card->number << 2); + else + client_index = -1; + } + /* empty write queue as default */ - client = seq_create_client1(client_index, 0); + client = seq_create_client1(client_index, 0, 1); if (client == NULL) { up(®ister_mutex); return -EBUSY; /* failure code */ |