cpumask_t mask = pcibus_to_cpumask(to_pci_dev(dev)->bus); int len = cpumask_scnprintf(buf, PAGE_SIZE-2, mask);
cpumask_t mask; int len;  mask = pcibus_to_cpumask(to_pci_dev(dev)->bus); len = cpumask_scnprintf(buf, PAGE_SIZE-2, mask);
static ssize_t local_cpus_show(struct device *dev, struct device_attribute *attr, char *buf){			cpumask_t mask = pcibus_to_cpumask(to_pci_dev(dev)->bus);	int len = cpumask_scnprintf(buf, PAGE_SIZE-2, mask);	strcat(buf,"\n"); 	return 1+len;}