From bedf16b0413155ad384811a55743196aa98aa800 Mon Sep 17 00:00:00 2001
From: Sean Bright <sean.bright@gmail.com>
Date: Tue, 11 Dec 2018 10:06:15 -0500
Subject: [PATCH] utils: Don't set or clear flags that don't need setting or
clearing
Change-Id: I0e7fb507ac09b15e45e1ff8501ecfca67afa5217
---
main/utils.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/main/utils.c b/main/utils.c
index e0b8a6ec02..b45e7b5179 100644
--- a/main/utils.c
+++ b/main/utils.c
@@ -2730,9 +2730,17 @@ int __ast_fd_set_flags(int fd, int flags, enum ast_fd_flag_operation op,
switch (op) {
case AST_FD_FLAG_SET:
+ if ((f & flags) == flags) {
+ /* There is nothing to set */
+ return 0;
+ }
f |= flags;
break;
case AST_FD_FLAG_CLEAR:
+ if (!(f & flags)) {
+ /* There is nothing to clear */
+ return 0;
+ }
f &= ~flags;
break;
default:
--
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