ipa_smp2p_notify(9)

✨ ipa_smp2p_notify(9) ✨

okay so bestie, welcome to the Kernel API Manual 💖 this one's a tiny little function page from the kernel docs, and honestly? it's giving "small but crucial." no cap.

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💅 NAME 💅

ipa_smp2p_notify — the function that uses SMP2P to tell the modem about the IPA power state. that's it, that's the whole job. iconic.

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🎀 SYNOPSIS 🎀

void ipa_smp2p_notify(struct ipa_smp2p *smp2p);

one argument, returns nothing, zero drama. periodt.

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🦋 ARGUMENTS 🦋

• smp2p — the SMP2P information. that's literally the whole description, bestie, it's the SMP2P info struct. no extra lore, don't ask me for more 💀

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🌸 DESCRIPTION 🌸

okay so here's the vibe check: this gets called in one of two situations 👑

1. when the modem has requested it — which it does by triggering the modem power query IPA interrupt 🔥
2. whenever the AP is shutting down — via a panic notifier 😭

and what does it actually do while it's there? it sets the two SMP2P state bits:

• one says whether the IPA power is on ⚡
• the other one indicates that the first bit is valid ✅

so it's basically a two-bit group chat message to the modem: "here's the power state, and yes, the power state is real." lowkey elegant, highkey doing its job 🫶

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🧚 SEE ALSO 🧚

• Kernel file ./drivers/net/ipa/ipa_smp2p.c 📁 — the actual source, iykyk
• IPA SMP2P communication with the modem(9)
• struct ipa_smp2p(9)

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hey bestie, quick reminder: this page is pulled straight from ./drivers/net/ipa, dated October 2026 🌈 so if the kernel moves stuff around, don't come for me — go read the source fr fr ✨

stay slay, go read that .c file 💜💅