From d95773a9511d1f21ea1fcf0d621b3d5f922e5cee Mon Sep 17 00:00:00 2001
From: tmm <tmm@FreeBSD.org>
Date: Sat, 5 Jul 2003 01:31:30 +0000
Subject: Fix a signedness problem in zstty_cncheckc(): when no character is
 ready, -1 should be returned, but it was assigned to an uint8_t (which is
 extended to an int to form the return value), causing 255 to be returned
 instead.

---
 sys/dev/zs/zs.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'sys/dev/zs')

diff --git a/sys/dev/zs/zs.c b/sys/dev/zs/zs.c
index 5a04a0e..26423e5 100644
--- a/sys/dev/zs/zs.c
+++ b/sys/dev/zs/zs.c
@@ -943,7 +943,7 @@ zstty_cngetc(struct zstty_softc *sc)
 static int
 zstty_cncheckc(struct zstty_softc *sc)
 {
-	uint8_t c;
+	int c;
 
 	c = -1;
 	zstty_cnopen(sc);
-- 
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