tpm_try_get_ops(9)

💖 tpm_try_get_ops 💖

okay so welcome to the tpm_try_get_ops(9) page of the Kernel API Manual ✨ this is the one that grabs you a ref to the tpm_chip, and honestly? it's giving gatekeeper-with-a-good-reason 🎀

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🌸 NAME 🌸

tpm_try_get_ops — Get a ref to the tpm_chip 🫶

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✨ SYNOPSIS ✨

int tpm_try_get_ops (struct tpm_chip *chip );

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🎀 ARGUMENTS 🎀

• chip — the Chip to ref. that's the one, bestie 💅

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🦋 DESCRIPTION 🦋

okay so before you even breathe on this function, the caller must already have some kind of locking to ensure that chip is valid — like, this is not the function's job, it is yours, no cap 😭

Once you're in, this function will lock the chip so that the ops member can be accessed safely 🔥 the locking is doing main character work here: it prevents tpm_chip_unregister from completing, so it should not be held for long periods ⭐ like, get in, do your little ops thing, get out, periodt 💀

Returns -ERRNO if the chip could not be got 🙈

lowkey important: that unregister-blocking thing is real — don't sit on this lock, bestie 🫶

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👑 SEE ALSO 👑

Kernel file ./drivers/char/tpm/tpm-chip.c plus the whole friend group:

• tpm_chip_start(9)
• tpm_chip_stop(9)
• tpm_put_ops(9)
• tpm_default_chip(9)
• tpm_dev_release(9)
• tpm_class_shutdown(9)
• tpm_chip_alloc(9)
• tpmm_chip_alloc(9)

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🌈 that's the whole vibe!! this lil page lives in ./drivers/char/tpm, dated October 2026, and it's literally titled tpm_try_get_ops(9) — slay, go ref that chip responsibly 💜🧚‍♀️