pcie_port_enable_irq_vec(9)

🎀 NAME 🎀

Hiii bestie 💖 this is pcie_port_enable_irq_vec(9), straight out of the Kernel API Manual, and she's here to try to set up MSI-X or MSI as interrupt mode for the given port. That's the name-card moment, no cap ✨

---

🌸 SYNOPSIS 🌸

The signature is giving:

int pcie_port_enable_irq_vec (struct pci_dev *dev , int *irqs , int mask
       );

---

🦋 ARGUMENTS 🦋

• dev — the PCI Express port to handle, main character energy 👑
• irqs — Array of interrupt vectors to populate; you're filling this array up, bestie 🎀
• mask — Bitmask of port capabilities returned by get_port_device_capability ✨

---

💜 DESCRIPTION 💜

Okay so the vibe is simple: this function tries to set up MSI-X or MSI as interrupt mode for the given port. That's the whole quest 💅

Return value: 0 on success, error code on failure. Periodt 🫶

---

🌈 SEE ALSO 🌈

The whole friend group, in order:

• Kernel file ./drivers/pci/pcie/portdrv.c — the kernel file in question 🏠
• release_pcie_device(9)
• pcie_init_service_irqs(9)
• get_port_device_capability(9)
• pcie_device_init(9)
• pcie_port_device_register(9)
• pcie_port_device_suspend(9)
• pcie_port_device_resume(9)
• pcie_port_device_runtime_suspend(9)
• pcie_port_device_runtime_resume(9)
• pcie_port_find_device(9)
• pcie_port_device_remove(9)
• pcie_port_bus_probe(9)
• pcie_port_bus_remove(9)
• pcie_port_service_register(9)
• pcie_port_service_unregister(9)

---

Okay bye bestie 🫶 this page's source/version is ./drivers/pci/pcie, dated October 2026, and the manual page itself is pcie_port_enable_irq_vec(9) — slay 💅💖