__snd_pcm_set_state(9)

🎀 NAME

okay bestie, welcome to __snd_pcm_set_state(9) from the Kernel API Manual — it’s giving “change the current PCM state” and honestly that’s the whole name, no cap 💅✨

✨ SYNOPSIS

void __snd_pcm_set_state (struct snd_pcm_runtime *runtime ,
snd_pcm_state_t state );

💅 ARGUMENTS

• runtime — the PCM runtime you’re setting, bestie. It’s a struct snd_pcm_runtime *.
• state — the current state you want to set, as a snd_pcm_state_t.

🦋 DESCRIPTION

okay so the entire description is literally: Call within the stream lock. That’s it. That’s the note. Do it inside the stream lock, periodt, no cap 💅🔥

🌈 SEE ALSO

like, go read these next, bestie — the whole crew is here. This page points at the kernel file ./include/sound/pcm.h, plus all these (9) friends:

• the kernel file: ./include/sound/pcm.h
• snd_pcm_stream_linked(9)
• snd_pcm_stream_lock_irqsave(9)
• snd_pcm_stream_lock_irqsave_nested(9)
• snd_pcm_group_for_each_entry(9)
• snd_pcm_running(9)
• bytes_to_samples(9)
• bytes_to_frames(9)
• samples_to_bytes(9)
• frames_to_bytes(9)
• frame_aligned(9)
• snd_pcm_lib_buffer_bytes(9)
• snd_pcm_lib_period_bytes(9)
• snd_pcm_playback_avail(9)
• snd_pcm_capture_avail(9)
• snd_pcm_playback_hw_avail(9)
• snd_pcm_capture_hw_avail(9)
• snd_pcm_playback_ready(9)
• snd_pcm_capture_ready(9)
• snd_pcm_playback_data(9)
• snd_pcm_playback_empty(9)
• snd_pcm_capture_empty(9)
• snd_pcm_trigger_done(9)
• params_channels(9)
• params_rate(9)
• params_period_size(9)
• params_periods(9)
• params_buffer_size(9)
• params_buffer_bytes(9)
• snd_pcm_hw_constraint_single(9)
• snd_pcm_format_cpu_endian(9)
• snd_pcm_set_sync(9)
• snd_pcm_set_runtime_buffer(9)
• snd_pcm_gettime(9)
• snd_pcm_set_fixed_buffer(9)
• snd_pcm_set_fixed_buffer_all(9)
• snd_pcm_sgbuf_get_addr(9)
• snd_pcm_sgbuf_get_chunk_size(9)
• snd_pcm_limit_isa_dma_size(9)
• snd_pcm_direction_name(9)
• snd_pcm_stream_str(9)
• snd_pcm_chmap_substream(9)
• pcm_format_to_bits(9)
• pcm_for_each_format(9)

okay that’s the whole vibe — footer shoutout: source/version ./include/sound, date October 2026. mwah 💋✨