snd_pcm_lib_ioctl(9)
NAME
snd_pcm_lib_ioctl - a generic PCM ioctl callback
SYNOPSIS
int snd_pcm_lib_ioctl(struct snd_pcm_substream * substream,
unsigned int cmd, void * arg);
ARGUMENTS
- substream
- the pcm substream instance
- cmd
- ioctl command
- arg
- ioctl argument
DESCRIPTION
Processes the generic ioctl commands for PCM. Can be passed as the
ioctl callback for PCM ops.
Returns zero if successful, or a negative error code on failure.