centos man page for pci_enable_msix

PCI_ENABLE_MSIX(9)						Hardware Interfaces						PCI_ENABLE_MSIX(9)

NAME
       pci_enable_msix - configure device's MSI-X capability structure

SYNOPSIS
       int pci_enable_msix(struct pci_dev * dev, struct msix_entry * entries, int nvec);

ARGUMENTS
       dev
	   pointer to the pci_dev data structure of MSI-X device function

       entries
	   pointer to an array of MSI-X entries

       nvec
	   number of MSI-X irqs requested for allocation by device driver

DESCRIPTION
       Setup the MSI-X capability structure of device function with the number of requested irqs upon its software driver call to request for
       MSI-X mode enabled on its hardware device function. A return of zero indicates the successful configuration of MSI-X capability structure
       with new allocated MSI-X irqs. A return of < 0 indicates a failure. Or a return of > 0 indicates that driver request is exceeding the
       number of irqs or MSI-X vectors available. Driver should use the returned value to re-send its request.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014							PCI_ENABLE_MSIX(9)