psp_ring_platform_doorbell(9)

💅 psp_ring_platform_doorbell(9) 🎀

okay so we're in the Kernel API Manual bestie, and today's main character is psp_ring_platform_doorbell(9) — literally the function that rings the platform doorbell. yes, like a doorbell. no cap. ✨

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🌸 NAME 🌸

psp_ring_platform_doorbell — ring platform doorbell 🔔 (that's it, that's the whole vibe)

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✨ SYNOPSIS ✨

int psp_ring_platform_doorbell (int msg , u32 *result );

takes an int msg and a u32 *result, hands you back an int. that's the shape of it, and we're keeping it exactly like that 🫶

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🦋 ARGUMENTS 🦋

• msg — -- undescribed -- 🙈 yeah. the manpage literally does not describe it. i'm not gonna make something up, that's not the move. it's undescribed, periodt.
• result — -- undescribed -- 😭 same situation. undescribed. we respect the mystery.

ngl i know, two whole arguments and zero explanation. but hey — i'm not about to invent lore. the docs say undescribed, so we say undescribed 💀

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💖 DESCRIPTION 💖

so here's the tea: this function is intended to be used by drivers outside of ccp, so they can ring the platform doorbell with a message. that's the whole job. outside-of-ccp drivers, doorbell, message, done. lowkey iconic in its simplicity honestly 👑

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🌈 RETURN 🌈

here's the part where you actually pay attention, bestie, because the return value is doing a lot of communicating:

• 0 — success ✅ slay
• -EBUSY — mailbox in recovery or in use 😬 it's occupied, come back later
• -ENODEV — driver not bound with PSP device 👻 nobody's home
• -ETIMEDOUT — request timed out ⏰ it waited, it gave up
• -EIO — error will be stored in result argument 💀 go check result, the actual details are living in there

fr fr: if you get -EIO, the real info is in result. don't just stare at the return code and spiral 🙈

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🧚 SEE ALSO 🧚

• Kernel file ./include/linux/psp-platform-access.h 📄
• psp_send_platform_access_msg(9) 🫶
• psp_check_platform_access_status(9) 💜

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and that's the page!! you understood it, i'm obsessed, we're both so good at unix 🎀✨

this little cutie came out of ./include/linux, and it's dated October 2026 — so yeah, mark your calendar, screenshot this, send it to the group chat, byeee 💅🍓