return ((devfn == dn->devfn) && (busno == dn->busno)) ? dn : NULL; 
if (pci && (devfn == pci->devfn) && (busno == pci->busno)) return dn; return NULL; 
static void *is_devfn_node(struct device_node *dn, void *data){	int busno = ((unsigned long)data >> 8) & 0xff;	int devfn = ((unsigned long)data) & 0xff;	return ((devfn == dn->devfn) && (busno == dn->busno)) ? dn : NULL;}
10457	/local/tlutelli/issta_data/temp/c/2005_temp/2005/10457/1635317facea3094ddf34082cd86797efb1d9f7e/pci_dn.c/clean/arch/ppc64/kernel/pci_dn.c