From: Pali Rohár <pali@kernel.org>
Date: Mon, 25 Oct 2021 13:12:53 +0000 (+0200)
Subject: tools: kwboot: Fix initialization of tty device
X-Git-Url: http://git.dujemihanovic.xyz/img/static/git-logo.png?a=commitdiff_plain;h=2ecca3d0d76023f219ac4350b0112cd19fbdda2e;p=u-boot.git

tools: kwboot: Fix initialization of tty device

Explicitly disable 2 stop bits by clearing CSTOPB flag, disable modem
control flow by clearing CRTSCTS flag and do not send hangup after closing
device by clearing HUPCL flag.

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 695d433b96..c55b41025b 100644
--- a/tools/kwboot.c
+++ b/tools/kwboot.c
@@ -657,6 +657,7 @@ kwboot_open_tty(const char *path, int baudrate)
 
 	cfmakeraw(&tio);
 	tio.c_cflag |= CREAD | CLOCAL;
+	tio.c_cflag &= ~(CSTOPB | HUPCL | CRTSCTS);
 	tio.c_cc[VMIN] = 1;
 	tio.c_cc[VTIME] = 0;