altos: Shrink ao_config_callsign_set

[fw/altos] / src / ao_stdio.c

diff --git a/src/ao_stdio.c b/src/ao_stdio.c
index ec3b6607b2e8cfb5ea1cf567a9ea98d22b2eda46..6b8908329aa1e8838eecdc62333720f8ffa2608a 100644 (file)
--- a/src/ao_stdio.c
+++ b/src/ao_stdio.c
@@ -69,7 +69,7 @@ ao_echo(void)
        return ao_stdios[ao_cur_stdio].echo;
 }
 
-void
+int8_t
 ao_add_stdio(char (*pollchar)(void),
             void (*putchar)(char),
             void (*flush)(void)) __reentrant
@@ -80,5 +80,5 @@ ao_add_stdio(char (*pollchar)(void),
        ao_stdios[ao_num_stdios].putchar = putchar;
        ao_stdios[ao_num_stdios].flush = flush;
        ao_stdios[ao_num_stdios].echo = 1;
-       ao_num_stdios++;
+       return ao_num_stdios++;
 }