X-Git-Url: https://git.gag.com/?p=fw%2Faltos;a=blobdiff_plain;f=src%2Fkernel%2Fao_stdio.c;fp=src%2Fkernel%2Fao_stdio.c;h=7f74f81194bcca5b1782c111c1d63b711b130e29;hp=c578c57cd920b3bc6ea5e4af4c1af8520cfd8283;hb=b140da92536d7c48ba37868f1c2afce7bb86dfdb;hpb=1d208c9509f03f7e2c913abe5c0dd78ef0083c0f

diff --git a/src/kernel/ao_stdio.c b/src/kernel/ao_stdio.c
index c578c57c..7f74f811 100644
--- a/src/kernel/ao_stdio.c
+++ b/src/kernel/ao_stdio.c
@@ -75,10 +75,10 @@
 struct ao_stdio ao_stdios[AO_NUM_STDIOS];
 
 #if AO_NUM_STDIOS > 1
-int8_t ao_cur_stdio;
-int8_t ao_num_stdios;
+uint8_t ao_cur_stdio;
+uint8_t ao_num_stdios;
 #else
-int8_t ao_cur_stdio;
+uint8_t ao_cur_stdio;
 #define ao_cur_stdio	0
 #define ao_num_stdios	0
 #endif
@@ -114,7 +114,7 @@ char
 ao_getchar(void) 
 {
 	int c;
-	int8_t stdio;
+	uint8_t stdio;
 
 	ao_arch_block_interrupts();
 	stdio = ao_cur_stdio;
@@ -133,7 +133,7 @@ ao_getchar(void)
 	ao_cur_stdio = stdio;
 #endif
 	ao_arch_release_interrupts();
-	return c;
+	return (char) c;
 }
 
 uint8_t
@@ -142,7 +142,7 @@ ao_echo(void)
 	return ao_stdios[ao_cur_stdio].echo;
 }
 
-int8_t
+uint8_t
 ao_add_stdio(int (*_pollchar)(void),
 	     void (*putchar)(char),
 	     void (*_flush)(void))