From 0a14341cf8f60e6a9ba2edb0802507cbb073e806 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Pali=20Roh=C3=A1r?= <pali@kernel.org>
Date: Mon, 25 Oct 2021 15:12:52 +0200
Subject: tools: kwboot: Initialize rfds to zero
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Explicitly zero out the rfds fd_set with FD_ZERO() before using it.

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Stefan Roese <sr@denx.de>
---
 tools/kwboot.c | 1 +
 1 file changed, 1 insertion(+)

(limited to 'tools')

diff --git a/tools/kwboot.c b/tools/kwboot.c
index 7e1be29..695d433 100644
--- a/tools/kwboot.c
+++ b/tools/kwboot.c
@@ -1151,6 +1151,7 @@ kwboot_terminal(int tty)
 		fd_set rfds;
 		int nfds = 0;
 
+		FD_ZERO(&rfds);
 		FD_SET(tty, &rfds);
 		nfds = nfds < tty ? tty : nfds;
 
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