From f2c9e55faf6fa560c25d448afa7e2d1ad61468f2 Mon Sep 17 00:00:00 2001
From: Chih-Mao Chen <cmchen@andestech.com>
Date: Thu, 16 Nov 2017 16:08:16 +0800
Subject: [PATCH] RISC-V: isatty: return 0 on error

---
 libgloss/riscv/sys_isatty.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libgloss/riscv/sys_isatty.c b/libgloss/riscv/sys_isatty.c
index 0dc3db169..8857f4828 100644
--- a/libgloss/riscv/sys_isatty.c
+++ b/libgloss/riscv/sys_isatty.c
@@ -13,5 +13,5 @@ _isatty(int file)
 {
   struct stat s;
   int ret = _fstat (file, &s);
-  return ret == -1 ? -1 : !!(s.st_mode & S_IFCHR);
+  return ret == -1 ? 0 : !!(s.st_mode & S_IFCHR);
 }