ENUM I3C_ERROR_CODE(9)

🦋 enum i3c_error_code(9) — the Kernel API Manual, bestie edition

okay so this is enum i3c_error_code(9) from the Kernel API Manual and honestly? it's a tiny one and it ate. it's literally just the I3C error codes, and if you've ever gotten a vague -EIO back from an I3C transfer and been like "😭 what does that even mean", this is the page for you. let's go 💅

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✨ NAME ✨

enum i3c_error_code — I3C error codes, that's it, that's the whole vibe 🎀

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🌸 SYNOPSIS 🌸

enum i3c_error_code {
    I3C_ERROR_UNKNOWN ,
    I3C_ERROR_M0 ,
    I3C_ERROR_M1 ,
    I3C_ERROR_M2

};

that's the whole enum. four little guys. no cap. 🫶

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💖 Constants 💖

• I3C_ERROR_UNKNOWN — unknown error, and usually that means the error isn't even I3C related 😭 so like, wrong department bestie
• I3C_ERROR_M0 — M0 error
• I3C_ERROR_M1 — M1 error
• I3C_ERROR_M2 — M2 error

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🔥 Description 🔥

these are the standard error codes as defined by the I3C specification ✨ iconic of it.

so here's the tea: when -EIO is returned by the i3c_device_do_i3c_xfers or i3c_device_send_hdr_cmds one can check the error code in struct_i3c_xfer.err or struct i3c_hdr_cmd.err to get a better idea of what went wrong 👑

ok so lowkey the move is: don't just stare at -EIO like 🙈 — go look in that .err field, it's giving you actual answers. main character debugging energy fr fr.

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👑 SEE ALSO 👑

Kernel file ./include/linux/i3c/device.h plus the whole friend group 💜

• enum i3c_xfer_mode(9)
• struct i3c_xfer(9)
• enum i3c_dcr(9)
• struct i3c_device_info(9)
• struct i3c_driver(9)
• dev_to_i3cdev(9)
• module_i3c_driver(9)
• i3c_i2c_driver_register(9)
• i3c_i2c_driver_unregister(9)
• module_i3c_i2c_driver(9)
• struct i3c_ibi_setup(9)

go read them, iykyk 📚✨

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aaaand that's the page!! 🎀 source/version: ./include/linux/i3c, dated October 2026 — mwah, bye bestie, go slay those I3C transfers 💅💖🌈