uio_port
struct uio_port *port;
static ssize_t portio_name_show(struct uio_port *port, char *buf)
static ssize_t portio_start_show(struct uio_port *port, char *buf)
static ssize_t portio_size_show(struct uio_port *port, char *buf)
static ssize_t portio_porttype_show(struct uio_port *port, char *buf)
ssize_t (*show)(struct uio_port *, char *);
ssize_t (*store)(struct uio_port *, const char *, size_t);
struct uio_port *port = portio->port;
struct uio_port *port;
struct uio_port *port;
struct uio_port port[MAX_UIO_PORT_REGIONS];