register_sound_dsp(9)

register_sound_dsp(9) 💖

okay so you're in the Kernel API Manual, bestie, and this page is all about register_sound_dsp — the function that literally gives your DSP device its lil identity. no cap, it's a whole moment. ✨

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💅 NAME

register_sound_dsp — register a DSP device. that's it, that's the vibe: registering a DSP device, and we love a clear queen. 🎀

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✨ SYNOPSIS

int register_sound_dsp (const struct file_operations *fops , int dev );

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🎀 ARGUMENTS

• fops — File operations for the driver. it's literally the driver's whole handler personality. 🫶
• dev — Unit number to allocate. which DSP slot bestie is asking for, basically. 💅

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🦋 DESCRIPTION

So you're allocating a DSP device. Unit is the number of the DSP requested. Pass -1 to request the next free DSP unit. no cap, -1 is the "just give me the next open one" move. 🔥

This function allocates both the audio and dsp device entries together and will always allocate them as a matching pair — eg dsp3/audio3. it's giving matching friendship bracelets, fr fr. 💖

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🔥 RETURN

On success, the allocated number is returned. yay, a number! 🎉

On failure, a negative error code is returned. not a vibe, but that's the contract. 😭

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🌈 SEE ALSO

Kernel file ./sound/sound_core.c — go read the source, bestie, it's right there. 👑

• register_sound_special_device(9)
• register_sound_mixer(9)
• unregister_sound_special(9)
• unregister_sound_mixer(9)
• unregister_sound_dsp(9)

these are the icon functions you should also check out. ✨

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Source/version: ./sound · Date: October 2026. bye bestie, go register that DSP! 💖🎀🦋