From: Pali Rohár <pali@kernel.org>
Date: Mon, 25 Oct 2021 13:12:52 +0000 (+0200)
Subject: tools: kwboot: Initialize rfds to zero
X-Git-Tag: baikal/mips/sdk5.9~15^2^2~60^2~19
X-Git-Url: https://git.baikalelectronics.ru/?a=commitdiff_plain;h=f26dd35fd146519551402ac94999cb1053e5483d;p=uboot.git

tools: kwboot: Initialize rfds to zero

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>
---

diff --git a/tools/kwboot.c b/tools/kwboot.c
index 7e1be29623..695d433b96 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;