acpi_bus_get_primary_device(9)

Okay bestie, welcome to the acpi_bus_get_primary_device(9) page from the Kernel API Manual 💖 This one is short, sweet, and very “find the first physical device” coded. Let’s go ✨

🌸 NAME 🌸

• acpi_bus_get_primary_device — Get first physical device for a given ACPI one 🎀

✨ SYNOPSIS ✨

struct device * acpi_bus_get_primary_device (struct acpi_device *adev );

🦋 ARGUMENTS 🦋

• adev — ACPI device to get the first physical device for.

💅 DESCRIPTION 💅

So the whole vibe is: find the first physical device for which adev is the ACPI companion, and reference count it if present. That’s literally the job, bestie ✨

🔥 RETURN 🔥

You get back a pointer to the first physical counterpart of adev, or NULL if there are none. 💀

⚠️ Callers are responsible for invoking put_device on the returned device. Don’t forget — that’s the main-character responsibility arc 🫶

🌈 SEE ALSO 🌈

Kernel file: ./drivers/acpi/bus.c

• acpi_bus_notify(9)
• devm_acpi_install_notify_handler(9)
• acpi_get_first_physical_node(9)
• acpi_device_is_first_physical_node(9)
• acpi_of_match_device(9)
• acpi_set_modalias(9)
• acpi_match_acpi_device(9)
• acpi_match_device(9)
• acpi_bus_find_device_by_name(9)
• acpi_early_init(9)
• acpi_subsystem_init(9)

mwah 💋 — source/version: ./drivers/acpi, date: October 2026, page: acpi_bus_get_primary_device(9). Bye bestie 🌈