ata_acpi_port_power_on(9)

💅 ata_acpi_port_power_on — the kernel API manual, section 9 🎀

okay bestie, welcome to ata_acpi_port_power_on(9), my fave little kernel-API glow-up. section 9 is the kernel interface section, iykyk ✨

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🌸 NAME 🌸

ata_acpi_port_power_on — set the power state of the ata port to D0 💖

like, it literally wakes your ATA port up and hands it a matcha. D0 is the "awake and thriving" power state, periodt.

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✨ SYNOPSIS ✨

void ata_acpi_port_power_on (struct ata_port *ap );

returns nothing (void), takes exactly one thing, no notes 💅

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🦋 ARGUMENTS 🦋

• ap — the target ATA port 🎯 that's the struct ata_port * we're doing the power glow-up on. she's the main character here, no cap.

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👑 DESCRIPTION 👑

This function is called at the beginning of ata_port_probe. 🫶

that's it, that's the whole vibe — top of the probe, before anything else gets to happen, we're setting the power state of the ata port to D0. she gets her power first. main character energy only. ⭐

not me making power states sound like a morning routine 😭 but fr fr, this is the early-stage "turn the lights on" call in the ATA probe path.

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💜 SEE ALSO 💜

the whole group chat, bestie — every single one of these lil icons:

• ata_dev_acpi_handle(9)
• ata_acpi_handle_hotplug(9)
• ata_acpi_dev_manage_restart(9)
• ata_acpi_dissociate(9)
• ata_acpi_gtm(9)
• ata_acpi_stm(9)
• ata_dev_get_GTF(9)
• ata_acpi_gtm_xfermask(9)
• ata_acpi_cbl_pata_type(9)
• ata_acpi_run_tf(9)
• ata_acpi_exec_tfs(9)
• ata_acpi_push_id(9)
• ata_acpi_on_resume(9)
• ata_acpi_set_state(9)
• ata_acpi_on_devcfg(9)
• ata_acpi_on_disable(9)

and the kernel file they all live in: ./drivers/ata/libata-acpi.c 🍓 go read it, it's giving lore.

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slay, that's the whole page 💖 mwah 🎀

source: ./drivers/ata · dated October 2026 — ok that's the official sign-off bestie, you're all caught up, go forth and probe responsibly 🌈👑💅