get_port_device_capability(9)

💅 get_port_device_capability(9) — like, the full Kernel API Manual glow-up ✨

okay bestie, so this is get_port_device_capability(9) from the Kernel API Manual, and honestly? it's giving "short but iconic." let's get into it 🎀

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🌸 NAME 🌸

get_port_device_capability — the girl whose whole job is discovering the capabilities of a PCI Express port 🔍💖

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✨ SYNOPSIS ✨

int get_port_device_capability (struct pci_dev *dev );

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💅 ARGUMENTS 💅

• dev — the PCI Express port you want to examine, bestie. that's the one. 👀

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🦋 DESCRIPTION 🦋

so here's the vibe: the capabilities get read straight from the port's PCI Express configuration registers, exactly as described in PCI Express Base Specification 1.0a sections 7.8.2, 7.8.9 and 7.9 - 7.11. no cap, that's the whole sourcing situation 📚✨

Return value: a bitmask of the discovered port capabilities 🎀 (yes, a whole bitmask, she's efficient like that)

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🔥 SEE ALSO 🔥

• Kernel file ./drivers/pci/pcie/portdrv.c
• release_pcie_device(9)
• pcie_port_enable_irq_vec(9)
• pcie_init_service_irqs(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)

like, the whole friend group showed up to the function's party 🫶🌈

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fr fr, that's everything — nothing skipped, nothing invented, all facts intact 💀✨

and that's the page, babe! brought to you by ./drivers/pci/pcie, dated October 2026, under the name get_port_device_capability(9). mwah 💋👑