pciehp_slot_reset(9)

💖 NAME 💖

Okay bestie, welcome to pciehp_slot_reset(9) from the Kernel API Manual — yes, we’re doing kernel hotplug lore today and it’s lowkey iconic. This page is about ignoring the link event caused by an error-induced hot reset 💅✨

• pciehp_slot_reset — ignore link event caused by error-induced hot reset 🎀

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✨ SYNOPSIS ✨

The whole signature is giving:

int pciehp_slot_reset (struct pcie_device *dev );

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🦋 ARGUMENTS 🦋

• dev — PCI Express port service device. That’s the one and only argument, bestie 🫶

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🌸 DESCRIPTION 🌸

Okay so the lore: this is called from pcie_portdrv_slot_reset after AER or DPC initiated a reset further up in the hierarchy to recover from an error. The reset was propagated down to this hotplug port. Your main-character job: ignore the resulting link flap 💅

If the link failed to retrain successfully, synthesize the ignored event. Surprise removal during reset is detected through Presence Detect Changed. No cap, that’s the whole flow 😭✨

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🌈 SEE ALSO 🌈

Go read these next, iykyk:

• 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_set_indicators(9)

Catch you in the source, bestie 🫶 — source/version: ./drivers/pci/hotplug — date: October 2026 — page: pciehp_slot_reset(9) 🌈💖