pci_acpi_ad..._pm_notifier(9)

💖 pci_acpi_ad..._pm_notifier(9) 💖

okay so bestie, welcome to the Kernel API Manual ✨ this one is short and sweet and it's literally all about telling the kernel's power-management girlies to text you back when the root PCI bus wakes up or goes nighty-night 😴🔔

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🌸 NAME 🌸

pci_acpi_add_root_pm_notifier — no cap, this is the one that registers your PM notifier for the root PCI bus 🫶

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🦋 SYNOPSIS 🦋

acpi_status pci_acpi_add_root_pm_notifier (struct acpi_device *dev ,
struct acpi_pci_root *root );

it's giving "two args, one job, zero drama" 💅 and like — heads up — the return type is acpi_status, which is the main character here 👑

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🎀 ARGUMENTS 🎀

• dev — the PCI root bridge ACPI device 💻 like, this is the ACPI-side bestie.
• root — the PCI root that corresponds to dev 🌉 the matching PCI-side bestie. they're a set, iykyk.

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⭐ SEE ALSO ⭐

so the kernel file lives right here: ./drivers/pci/pci-acpi.c 📁 and while you're in the neighborhood, go say hi to the whole friend group 👯‍♀️:

• pciehp_is_native(9)
• shpchp_is_native(9)
• pci_acpi_wake_bus(9)
• pci_acpi_wake_dev(9)
• pci_acpi_add_pm_notifier(9)
• pci_dev_acpi_reset(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)

like, read them all, they're all iconic in their own way 🔥

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✨ reminder bestie: this page is short, so don't go inventing extra flags or behaviour in your head — what you see is what you get 💖

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and that's the whole vibe, periodt 💅 sourced from ./drivers/pci, dated October 2026 🗓️🌸 mwah, go register that notifier 🫶🎀