pci_dev_acpi_reset(9)

✨ pci_dev_acpi_reset(9) — Kernel API Manual ✨

okay so bestie, welcome to the group chat 💅 this is a page from the Kernel API Manual, and it's about one (1) very specific little function. she's short, she's sweet, she does exactly one thing, and honestly? iconic.

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💖 NAME 💖

pci_dev_acpi_reset — do a function level reset using _RST method

like. that's it. that's the whole vibe. she performs a function level reset and she does it via the _RST method, no cap 🎀

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🌸 SYNOPSIS 🌸

int pci_dev_acpi_reset (struct pci_dev *dev , bool probe );

there she is. returns an int, takes a struct pci_dev * and a bool. periodt ✨

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🦋 ARGUMENTS 🦋

• dev — the device to reset. this is the main character of the whole operation, the one getting the reset treatment 💅
• probe — if true, return 0 if the device supports _RST. so like, it's a vibe check first, actual reset later 👀

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🎀 SEE ALSO 🎀

kernel file ./drivers/pci/pci-acpi.c — that's where she lives, go say hi 🫶

and a whole friend group of related functions, all repping the same squad:

• pciehp_is_native(9)
• shpchp_is_native(9)
• pci_acpi_wake_bus(9)
• pci_acpi_wake_dev(9)
• pci_acpi_add_root_pm_notifier(9)
• pci_acpi_add_pm_notifier(9)
• pci_acpi_set_companion_lookup_hook(9)
• pci_acpi_clear_companion_lookup_hook(9)
• pci_acpi_optimize_delay(9)
• pci_msi_register_fwnode_provider(9)
• pci_host_bridge_acpi_msi_domain(9)

not me listing the entire contact list 😭 but fr fr, they're all relevant, go read them too 🧚

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lowkey reminder bestie: probe being true means you're not resetting anything, you're just asking "does this device even support _RST?" and getting a 0 if yes. don't get it twisted 💀

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🌸 that's the whole page! source: ./drivers/pci, dated October 2026 — mwah, kisses, go reset some devices responsibly 💜✨👑