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tools: kwboot: Fix initialization of tty device

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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>
This commit is contained in:
Pali Rohár
2021-10-25 15:12:53 +02:00
committed by Stefan Roese
parent 0a14341cf8
commit 2ecca3d0d7
1 changed files with 1 additions and 0 deletions
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tools/kwboot.c
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@@ -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;