tpm_crb_ffa_init(9)

🎀 tpm_crb_ffa_init 🎀

okay so bestie, welcome to the kernel API manual page for tpm_crb_ffa_init — section 9 of the Kernel API Manual, if you're keeping track 💅

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✨ NAME ✨

tpm_crb_ffa_init — the little function the CRB driver calls when it needs any initialization done. that's it, that's the job 🫶

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🌸 SYNOPSIS 🌸

int tpm_crb_ffa_init (void );

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🦋 ARGUMENTS 🦋

• void — literally no arguments. nothing. zero. the void is voiding 🙈

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💖 DESCRIPTION 💖

so here's the vibe: this function gets called by the tpm_crb driver during that driver's own initialization. and depending on how things went down, it has thoughts 😭

• If tpm_crb_ffa has not been probed yet, it returns -ENOENT — specifically to force a retry. not me being dramatic, that's the actual reason 👑
• If the ffa_crb driver had been probed but failed with an error, it returns -ENODEV — specifically to prevent further retries. periodt, we're done trying 💀

ngl the original page writes that second one as "th ffa_crb driver" — one missing "e", iconic typo, but the driver in question is ffa_crb, no cap 🍓

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⭐ RETURN ⭐

• 0 on success 🌈
• a negative error code on failure 😭

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🔥 SEE ALSO 🔥

• Kernel file ./drivers/char/tpm/tpm_crb_ffa.c
• tpm_crb_ffa_get_interface_version(9)
• tpm_crb_ffa_start(9)

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and that's the page, bestie 🧚 this one lives in ./drivers/char/tpm, it's from October 2026, and it's part of the Kernel API Manual. go read the other two tpm_crb_ffa pages, iykyk 💜✨