pci_check_and_unmask_intx(9) centos man page | unix.com

PCI_CHECK_AND_UNMASK(9) 					Hardware Interfaces					   PCI_CHECK_AND_UNMASK(9)

NAME
       pci_check_and_unmask_intx - unmask INTx of no interrupt is pending

SYNOPSIS
       bool pci_check_and_unmask_intx(struct pci_dev * dev);

ARGUMENTS
       dev
	   the PCI device to operate on

DESCRIPTION
       Check if the device dev has its INTx line asserted, unmask it if not and return true. False is returned and the mask remains active if
       there was still an interrupt pending.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014						   PCI_CHECK_AND_UNMASK(9)