pciehp_set_indicators(9)

✨ pciehp_set_indicators ✨

okay so bestie, this one's from the Kernel API Manual and it's literally the glow-up button for your PCIe hotplug slot 💅 like it sets the attention indicator, the power indicator, or both. slay.

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🌸 SYNOPSIS 🌸

void pciehp_set_indicators (struct controller *ctrl , int pwr , int attn );

no cap, that's the whole signature. three args, zero drama 🫶

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🎀 ARGUMENTS 🎀

• ctrl — the PCIe hotplug controller 💖 this is your main character, the thing you're lighting up.
• pwr — the power indicator setting, and it's gotta be one of these three:
  • PCI_EXP_SLTCTL_PWR_IND_ON
  • PCI_EXP_SLTCTL_PWR_IND_BLINK
  • PCI_EXP_SLTCTL_PWR_IND_OFF
• attn — the attention indicator setting, also one of these:
  • PCI_EXP_SLTCTL_ATTN_IND_ON
  • PCI_EXP_SLTCTL_ATTN_IND_BLINK
  • PCI_EXP_SLTCTL_ATTN_IND_OFF

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🦋 DESCRIPTION 🦋

so what it does is set the attention indicator, the power indicator, or both — pick your fighter ✨

and here's the little detail that ate: either pwr or attn can also be INDICATOR_NOOP, which means "leave that indicator exactly how it is, don't touch it" 🙈 so you can update one light and completely ignore the other, iconic.

no guessing here, bestie — those are the documented values, so don't go inventing your own 💀

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👑 SEE ALSO 👑

• Kernel file ./drivers/pci/hotplug/pciehp_hpc.c
• pcie_write_cmd(9)
• pciehp_check_link_active(9)
• pciehp_card_present(9)
• pciehp_card_present_or_link_active(9)
• pciehp_slot_reset(9)

like, read the whole squad fr fr 🧚

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okay that's the whole page, bestie 💜 it lives under ./drivers/pci/hotplug and it's dated October 2026 — so go forth, set those indicators, and remember: LED blink is a whole vibe check 🌈⭐🔥