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-rw-r--r--drivers/serial/8250.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/serial/8250.c b/drivers/serial/8250.c
index 96a585e..6d0ce64 100644
--- a/drivers/serial/8250.c
+++ b/drivers/serial/8250.c
@@ -2228,7 +2228,9 @@ serial8250_set_termios(struct uart_port *port, struct ktermios *termios,
}
serial8250_set_mctrl(&up->port, up->port.mctrl);
spin_unlock_irqrestore(&up->port.lock, flags);
- tty_termios_encode_baud_rate(termios, baud, baud);
+ /* Don't rewrite B0 */
+ if (tty_termios_baud_rate(termios))
+ tty_termios_encode_baud_rate(termios, baud, baud);
}
static void
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