mirror of
https://github.com/torvalds/linux.git
synced 2026-10-07 22:37:45 -04:00
Document /sys/bus/pci/devices/.../irq. This file contains the IRQ of the INTx interrupt (or zero if the device doesn't support INTx interrupts). If the device has enabled MSI (not MSI-X), it contains the first MSI IRQ instead. This is a historical mistake because devices may support several MSI or MSI-X vectors, and this file can't contain them all. But we preserve this behavior to avoid breaking userspace. [bhelgaas: commit log] Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Barry Song <[email protected]> Signed-off-by: Bjorn Helgaas <[email protected]> Acked-by: Greg Kroah-Hartman <[email protected]>