diff options
| -rw-r--r-- | sound/core/seq/seq_clientmgr.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/sound/core/seq/seq_clientmgr.c b/sound/core/seq/seq_clientmgr.c index d6d9419d8bac..37590f8320a3 100644 --- a/sound/core/seq/seq_clientmgr.c +++ b/sound/core/seq/seq_clientmgr.c @@ -2423,9 +2423,17 @@ int snd_seq_kernel_client_dispatch(int client, struct snd_seq_event * ev, EXPORT_SYMBOL(snd_seq_kernel_client_dispatch); -/* - * exported, called by kernel clients to perform same functions as with - * userland ioctl() +/** + * snd_seq_kernel_client_ctl - operate a command for a client with data in + * kernel space. + * @clientid: A numerical ID for a client. + * @cmd: An ioctl(2) command for ALSA sequencer operation. + * @arg: A pointer to data in kernel space. + * + * Against its name, both kernel/application client can be handled by this + * kernel API. A pointer of 'arg' argument should be in kernel space. + * + * Return: 0 at success. Negative error code at failure. */ int snd_seq_kernel_client_ctl(int clientid, unsigned int cmd, void *arg) { |