pci_enable_ltr(9) centos man page | unix.com

PCI_ENABLE_LTR(9)						Hardware Interfaces						 PCI_ENABLE_LTR(9)

NAME
       pci_enable_ltr - enable latency tolerance reporting

SYNOPSIS
       int pci_enable_ltr(struct pci_dev * dev);

ARGUMENTS
       dev
	   PCI device

DESCRIPTION
       Enable LTR on dev if possible, which means enabling it first on upstream ports.

RETURNS
       Zero on success, errno on failure.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014							 PCI_ENABLE_LTR(9)