1SND_PCM_LIB_IOCTL(9)                PCM API               SND_PCM_LIB_IOCTL(9)
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NAME

6       snd_pcm_lib_ioctl - a generic PCM ioctl callback
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SYNOPSIS

9       int snd_pcm_lib_ioctl(struct snd_pcm_substream * substream,
10                             unsigned int cmd, void * arg);
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ARGUMENTS

13       substream
14           the pcm substream instance
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16       cmd
17           ioctl command
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19       arg
20           ioctl argument
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DESCRIPTION

23       Processes the generic ioctl commands for PCM. Can be passed as the
24       ioctl callback for PCM ops.
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RETURN

27       Zero if successful, or a negative error code on failure.
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30Kernel Hackers Manual 3.10         June 2019              SND_PCM_LIB_IOCTL(9)
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