tpm_class_shutdown(9)

📦 version 7.3.1, in nixpkgs unstable

okay so bestie, welcome to tpm_class_shutdown(9) from the Kernel API Manual ✨ this is the lil shutdown-prep page, and we're gonna get into it 💅

✨ NAME ✨

tpm_class_shutdown — prepare the TPM device for loss of power. That's literally the whole mission, no cap 💖

🦋 SYNOPSIS 🦋

int tpm_class_shutdown (struct device *dev );

🎀 ARGUMENTS 🎀

  • dev — the device to which the chip is associated. That's the device the chip is associated with, bestie 🫶

💅 DESCRIPTION 💅

It issues a TPM2_Shutdown command before loss of power, as required by the TPM 2.0 spec 👑 Then it calls the bus- and device- specific shutdown code. It's giving "shutdown prep, but make it spec-compliant" fr fr 🔥

🌸 RETURN 🌸

always 0 (i.e. success) — yep, it's always 0 (i.e. success), not me being obsessed with a guaranteed success return 😭💖

🔥 SEE ALSO 🔥

also check out the kernel file ./drivers/char/tpm/tpm-chip.c (yes, that exact path, bestie) and these iconic references:

mwah 💋 this page lives in ./drivers/char/tpm, dated October 2026, and it's all about tpm_class_shutdown(9) realness 🫶

📦 where this page comes from