From 265092c55d40f362a521eee97676e0d51ef17800 Mon Sep 17 00:00:00 2001
From: Laurent Bercot <ska-skaware@skarnet.org>
Date: Mon, 23 Nov 2020 12:36:34 +0000
Subject:  Save syscalls on coe and ndelay_on

---
 src/libstddjb/ndelay_on.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'src/libstddjb/ndelay_on.c')

diff --git a/src/libstddjb/ndelay_on.c b/src/libstddjb/ndelay_on.c
index 63ffa58..1bf9527 100644
--- a/src/libstddjb/ndelay_on.c
+++ b/src/libstddjb/ndelay_on.c
@@ -6,5 +6,5 @@
 int ndelay_on (int fd)
 {
   int got = fcntl(fd, F_GETFL) ;
-  return (got == -1) ? -1 : fcntl(fd, F_SETFL, got | O_NONBLOCK) ;
+  return got < 0 ? got : got & O_NONBLOCK ? 0 : fcntl(fd, F_SETFL, got | O_NONBLOCK) ;
 }
-- 
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