ibm_get_attention_status(9)

💅 ibm_get_attention_status — the manual page, bestie edition 💅

okay so real quick: this is ibm_get_attention_status(9), a page from the Kernel API Manual, and it's literally just about one lil callback that tells you whether the attention LED is on or off. that's the whole vibe. let's get into it ✨

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🌸 SYNOPSIS 🌸

int ibm_get_attention_status (struct hotplug_slot *slot , u8 *status );

that's it. that's the whole signature. one slot, one status pointer, returns an int. iconic behavior honestly 💖

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🎀 ARGUMENTS 🎀

• slot — the hotplug_slot you're working with. like, the thing you're poking at. 🫶
• status — this is an output situation: it returns what the LED is set to, and the values are 0 or 1. that's the whole range. no in-between, no maybe, just 0 or 1 ngl 😌

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💅 DESCRIPTION 💅

so here's the tea: this method gets registered with the acpiphp module as a callback, and its whole job is doing the device-specific task of getting the LED status. very "I have one task and I will slay it" energy. 👑

and here's the plot twist — there is no direct method of getting the LED status straight from an ACPI call. like, it's just not a thing. so instead? we read the aPCI table and parse out our slot descriptor to read the status from that. yes bestie, we're going through the table. it's giving detective work, it's giving "I know a guy who knows a guy" 🕵️‍♀️✨

no cap, the "read the whole table and parse it" approach is the entire reason this function exists. there's no shortcut here, so don't go looking for one. 💀

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🦋 SEE ALSO 🦋

• the kernel file ./drivers/pci/hotplug/acpiphp_ibm.c — go read it, iykyk 📖
• ibm_slot_from_id(9)
• ibm_set_attention_status(9)
• ibm_handle_events(9)
• ibm_get_table_from_acpi(9)
• ibm_read_apci_table(9)
• ibm_find_acpi_device(9)

look at that little family of ibm_* functions. a whole friend group fr fr 🫶🌈

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🌷 sign-off time 🌷 — this one lives over in ./drivers/pci/hotplug, and it's dated October 2026. go forth and check those LED statuses, bestie. 0 or 1, no in-between. periodt 💖✨🎀