radisys_init_one(9)

💅 radisys_init_one(9) ✨

ok so this is a page from the Kernel API Manual, and it's about one very specific little function. bestie, if you're here, you're probably deep in ATA driver land, and honestly? respect. let's get into it 🫶

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🌸 NAME 🌸

radisys_init_one — the girl whose whole job is registering a PIIX ATA PCI device with the kernel services. that's it, that's the gig 👑

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🎀 SYNOPSIS 🎀

int radisys_init_one (struct pci_dev *pdev , const struct pci_device_id
*ent );

like, she takes two things and she gives you back an int. iconic signature tbh 💅

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🦋 ARGUMENTS 🦋

• pdev — the PCI device you're registering. the main character of this whole operation ✨
• ent — the entry in radisys_pci_tbl that matches up with pdev. they're a matched set, iykyk 💖

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🌈 DESCRIPTION 🌈

So this gets called from the kernel PCI layer, right? and when it runs, we probe for combined mode (sigh 😮‍💨 — the manpage itself is sighing, not me, I'm just relaying), and then we hand over control to libata, because libata is gonna do the rest. we're just the setup girlie, not the whole show 🧚

LOCKING: the locking is inherited from the PCI layer — and heads up, it may sleep 😴 so don't be out here calling it from somewhere spicy. no cap. 💀

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⭐ RETURN ⭐

Zero on success 🎉 — or a -ERRNO value if things went sideways 😭 (that's a negative errno, so you know exactly what flavor of bad it was).

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🔥 SEE ALSO 🔥

• the kernel file ./drivers/ata/pata_radisys.c — the source, go read her 📖
• radisys_set_piomode(9)
• radisys_set_dmamode(9)
• radisys_qc_issue(9)

the whole friend group fr fr 🫶✨

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lowkey a reminder: everything here lives over in ./drivers/ata, so that's your home base bestie 🏠💜

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and that's the page!! 🎀 brought to you by the ./drivers/ata source, from October 2026, in all its radisys_init_one(9) glory — mwah, go slay your PCI probe 💋✨👑