get_function_0(9)

💅 get_function_0 — Kernel API Manual ✨

okay so bestie, welcome to the Kernel API Manual 🎀 and lemme tell you about get_function_0, which is giving "small function, big main character energy" fr fr.

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🌸 NAME 🌸

get_function_0 — find a related PCI device (function 0) 💖

like, that's literally it. that's the whole gig. she finds the related device on function 0 and she does it slayfully ✨

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🦋 SYNOPSIS 🦋

struct pci_dev * get_function_0 (struct pci_dev *dev );

no cap, that's the exact signature, copy it character for character or the compiler will absolutely humble you 😭

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🍓 ARGUMENTS 🍓

• dev — the PCI device to match 🫶 that's the one you're handing her so she knows what to go looking for

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👑 DESCRIPTION 👑

so here's the vibe check: she returns a pointer to the related device 💫

and if there's no related device to be found? she returns null. not found, not her problem, she said what she said 💅

lowkey important: null here means not found — that's the documented behavior, bestie, don't go reading extra lore into it 🙈

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🌈 SEE ALSO 🌈

• kernel file ./drivers/misc/ocxl/config.c ⭐ where the magic lives
• get_dvsec_vendor0(9) ✨
• read_template_version(9) 💜
• read_afu_lpc_memory_info(9) 🧚

go read those too, iykyk 🔥

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and that's the page, bestie 🎀 sign-off time: this lil masterpiece comes to you from ./drivers/misc/ocxl, dated October 2026 — iconic, timeless, no notes 👑💖