pcie_aspm_enabled(9)

🌸 NAME 🌸

Okay bestie, you're looking at pcie_aspm_enabled(9) from the Kernel API Manual ✨ — the function that checks if PCIe ASPM has been enabled for a device. That's the whole vibe 💅

✨ SYNOPSIS ✨

bool pcie_aspm_enabled (struct pci_dev *pdev );

🎀 ARGUMENTS 🎀

• pdev — the target device, bestie 🎯

🦋 DESCRIPTION 🦋

Okay so here's the tea: this one relies on the upstream bridge's link_state being valid 🫶 The link_state gets deallocated only when the last child of the bridge (i.e., pdev or a sibling) is removed, and the caller should be holding a reference to pdev, so this should be safe. Periodt ✨

🔥 SEE ALSO 🔥

Kernel file: ./drivers/pci/pcie/aspm.c — that's where it lives, iykyk 👑

Go peek at these too:

• pcie_encode_t_power_on(9)
• pci_disable_link_state(9)
• pci_enable_link_state(9)
• pci_enable_link_state_locked(9)

🎀 source/version: ./drivers/pci/pcie · date: October 2026 · pcie_aspm_enabled(9) 🎀