centos man page for pci_msi_off

PCI_MSI_OFF(9)							Hardware Interfaces						    PCI_MSI_OFF(9)

NAME
       pci_msi_off - disables any MSI or MSI-X capabilities

SYNOPSIS
       void pci_msi_off(struct pci_dev * dev);

ARGUMENTS
       dev
	   the PCI device to operate on

DESCRIPTION
       If you want to use MSI, see pci_enable_msi and friends. This is a lower-level primitive that allows us to disable MSI operation at the
       device level.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014							    PCI_MSI_OFF(9)