cdx_mcdi_bus_disable(9)

💅 cdx_mcdi_bus_disable(9) — the kernel API manual, but make it make sense

okay so bestie, welcome to the Kernel API Manual entry for cdx_mcdi_bus_disable 🎀 this one is short and sweet, but it's literally the plug that turns a whole CDX bus off, so pay attention, iykyk.

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✨ NAME ✨

cdx_mcdi_bus_disable — Disable CDX bus represented by bus_num 🌸

that's it. that's the whole vibe. you point at a bus number, it goes night-night 😴

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🦋 SYNOPSIS 🦋

int cdx_mcdi_bus_disable (struct cdx_mcdi *cdx , u8 bus_num );

look at her, so compact, so iconic 👑 takes a pointer to the MCDI interface and a u8 bus number, hands you back an int. no cap.

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💖 ARGUMENTS 💖

• cdx — pointer to MCDI interface. yes it's the main character of this call, keep her safe 🫶
• bus_num — Bus number. just the number. the whole bus. that's the one you're disabling fr fr.

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🔥 RETURN 🔥

• 0 on success 🎉 slay, bus disabled
• <0 on failure 😭 something went wrong, check your vibes (and your inputs)

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🌈 SEE ALSO 🌈

• Kernel file ./drivers/cdx/controller/mcdi_functions.h — go read the source bestie, it's giving ✨ documentation ✨
• cdx_mcdi_get_num_buses(9)
• cdx_mcdi_get_num_devs(9)
• cdx_mcdi_get_dev_config(9)
• cdx_mcdi_bus_enable(9) — the opposite energy 💀
• cdx_mcdi_write_msi(9)
• cdx_mcdi_reset_device(9)
• cdx_mcdi_bus_master_enable(9)
• cdx_mcdi_msi_enable(9)

the whole friend group honestly, go say hi 💜

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🧚 tiny reminder: 0 means success here, <0 means nope. don't get it twisted, that's the classic kernel way and it ate.

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and that's the page, bestie 💅 brought to you straight out of ./drivers/cdx/controller, dated October 2026 — see you in the next manual page, mwah 🍓💖