Fix typo in serial.c

https://github.com/Hamlib/Hamlib/issues/768
2021-08-21 07:41:48 -05:00 · 2021-08-21 07:41:48 -05:00 · ad53f2f1e3
commit ad53f2f1e3
--- a/src/serial.c
+++ b/src/serial.c
@ -720,7 +720,7 @@ int ser_open(hamlib_port_t *p)
             * pathname is not uh_rig or uh_ptt: simply open()
             */
            ret = OPEN(p->pathname, O_RDWR | O_NOCTTY | O_NDELAY);
-            if (ret == 1) // some serial ports fail to open 1st time
+            if (ret == -1) // some serial ports fail to open 1st time
            {
                rig_debug(RIG_DEBUG_WARN, "%s(%d): open failed#1\n", __func__, __LINE__);
                hl_usleep(500*1000);