centos man page for pci_reset_function

PCI_RESET_FUNCTION(9)						Hardware Interfaces					     PCI_RESET_FUNCTION(9)

NAME
       pci_reset_function - quiesce and reset a PCI device function

SYNOPSIS
       int pci_reset_function(struct pci_dev * dev);

ARGUMENTS
       dev
	   PCI device to reset

DESCRIPTION
       Some devices allow an individual function to be reset without affecting other functions in the same device. The PCI device must be
       responsive to PCI config space in order to use this function.

       This function does not just reset the PCI portion of a device, but clears all the state associated with the device. This function differs
       from __pci_reset_function in that it saves and restores device state over the reset.

       Returns 0 if the device function was successfully reset or negative if the device doesn't support resetting a single function.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014						     PCI_RESET_FUNCTION(9)