linux-kernel - [PATCH 2/3] tty: serial: fsl_lpuart: disable the break condition when shutdown the uart port

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Date:   Wed, 14 Dec 2022 11:11:36 +0800
From:   Sherry Sun <sherry.sun@....com>
To:     gregkh@...uxfoundation.org, jirislaby@...nel.org
Cc:     linux-serial@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-imx@....com
Subject: [PATCH 2/3] tty: serial: fsl_lpuart: disable the break condition when shutdown the uart port

Need to disable the break condition for lpuart driver when closing
the uart port like other uart drivers do.

Signed-off-by: Sherry Sun <sherry.sun@....com>
---
 drivers/tty/serial/fsl_lpuart.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/tty/serial/fsl_lpuart.c b/drivers/tty/serial/fsl_lpuart.c
index f487d3d2effe..584b26e0b947 100644
--- a/drivers/tty/serial/fsl_lpuart.c
+++ b/drivers/tty/serial/fsl_lpuart.c
@@ -1839,10 +1839,10 @@ static void lpuart32_shutdown(struct uart_port *port)
 	temp &= ~(UARTBAUD_TDMAE | UARTBAUD_RDMAE);
 	lpuart32_write(port, temp, UARTBAUD);
 
-	/* disable Rx/Tx and interrupts */
+	/* disable Rx/Tx and interrupts and break condition */
 	temp = lpuart32_read(port, UARTCTRL);
 	temp &= ~(UARTCTRL_TE | UARTCTRL_RE | UARTCTRL_ILIE |
-			UARTCTRL_TIE | UARTCTRL_TCIE | UARTCTRL_RIE);
+			UARTCTRL_TIE | UARTCTRL_TCIE | UARTCTRL_RIE | UARTCTRL_SBK);
 	lpuart32_write(port, temp, UARTCTRL);
 
 	spin_unlock_irqrestore(&port->lock, flags);
-- 
2.17.1