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  • uspace/lib/c/generic/io/serial.c

    rc4c6025 rb7fd2a0  
    4141 * @return EOK on success, ENOMEM if out of memory, EIO on I/O error
    4242 */
    43 int serial_open(async_sess_t *sess, serial_t **rserial)
     43errno_t serial_open(async_sess_t *sess, serial_t **rserial)
    4444{
    4545        serial_t *serial;
     
    6868
    6969/** Set serial port communication properties. */
    70 int serial_set_comm_props(serial_t *serial, unsigned rate,
     70errno_t serial_set_comm_props(serial_t *serial, unsigned rate,
    7171    serial_parity_t parity, unsigned datab, unsigned stopb)
    7272{
    7373        async_exch_t *exch = async_exchange_begin(serial->sess);
    7474
    75         int rc = async_req_4_0(exch, SERIAL_SET_COM_PROPS, rate, parity,
     75        errno_t rc = async_req_4_0(exch, SERIAL_SET_COM_PROPS, rate, parity,
    7676            datab, stopb);
    7777
     
    8181
    8282/** Get serial port communication properties. */
    83 int serial_get_comm_props(serial_t *serial, unsigned *rrate,
     83errno_t serial_get_comm_props(serial_t *serial, unsigned *rrate,
    8484    serial_parity_t *rparity, unsigned *rdatab, unsigned *rstopb)
    8585{
     
    8787        sysarg_t rate, parity, datab, stopb;
    8888
    89         int rc = async_req_0_4(exch, SERIAL_GET_COM_PROPS, &rate, &parity,
     89        errno_t rc = async_req_0_4(exch, SERIAL_GET_COM_PROPS, &rate, &parity,
    9090            &datab, &stopb);
    9191
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