hvc_get_chars
extern ssize_t hvc_get_chars(uint32_t vtermno, u8 *buf, size_t count);
EXPORT_SYMBOL(hvc_get_chars);
hvsilib_init(&pv->hvsi, hvc_get_chars, hvc_put_chars,
hvsilib_init(&hvterm_priv0.hvsi, hvc_get_chars, hvc_put_chars,
hvsilib_init(&hvterm_priv0.hvsi, hvc_get_chars, hvc_put_chars,
pv->left = hvc_get_chars(pv->termno, pv->buf, count);
got = hvc_get_chars(unit_address,
got = hvc_get_chars(hp->vtermno, buf, count);