ssize_t ret = 0; 
ssize_t ret = -EIO; 
class_attr_show(struct kobject * kobj, struct attribute * attr, char * buf){	struct class_attribute * class_attr = to_class_attr(attr);	struct class * dc = to_class(kobj);	ssize_t ret = 0;	if (class_attr->show)		ret = class_attr->show(dc, buf);	return ret;}
4520	/local/tlutelli/issta_data/temp/c/2005_temp/2005/4520/4a0c20bf8c0fe2116f8fd7d3da6122bf8a01f026/class.c/buggy/drivers/base/class.c