ahci_save_initial_config(9)

✨ ahci_save_initial_config(9) — from the Kernel API Manual, bestie 💖

Okay so we're deep in the kernel docs today, and this one lives in the Kernel API Manual — yes, the manual manual, section 9 energy. Pull up a chair 🎀

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🌸 NAME 🌸

ahci_save_initial_config — literally Save and fixup initial config values 👑

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🦋 SYNOPSIS 🦋

void ahci_save_initial_config (struct device *dev , struct
       ahci_host_priv *hpriv );

Yes the line break is real, yes it's giving "written at 3am", we love it anyway 💅

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🌈 ARGUMENTS 🌈

• dev — the target AHCI device. this is the whole reason we're here 🫶
• hpriv — the host private area where the config values get stored. like a lil ✨storage unit✨ for host stuff

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🔥 DESCRIPTION 🔥

okay so picture this: some registers holding configuration info might be all set up by the BIOS already, right? and then 💀 they might get cleared on reset. the audacity. so this function swoops in and saves the initial values of those registers into hpriv so they can be restored after controller reset. main character energy fr fr 👑

and if those config values are being inconsistent with each other? this function fixes them up. it said "not on my watch" 🫶

also — if it's not set already, this function sets hpriv->start_engine to ahci_start_engine. cute lil default, no cap ✨

LOCKING: None. zero. nada. no locks here, so don't go assuming any 🙈

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👑 SEE ALSO 👑

• Kernel file ./drivers/ata/libahci.c — the source, go read it, iykyk 📖
• ahci_rpm_get_port(9)
• ahci_rpm_put_port(9)
• ahci_restore_initial_config(9)
• ahci_host_activate(9)

all the siblings, all iconic, go say hi 🌈

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that's the whole page, bestie — go forth and save those register values before the reset eats them 😭💜

sign-off szn: this masterpiece comes from ./drivers/ata, dated October 2026 — yes, 2026, we're time traveling, slay ⭐🦋💅