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tty: serial: imx: disable the break condition when shutdown the uart port

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The comment in imx_uart_shutdown() says to disable the break condition,
but it doesn't actually do that, here fix this by disabling UCR1_SNDBRK
when closing the uart port like other uart drivers do.

Signed-off-by: Sherry Sun <sherry.sun@nxp.com>
Link: https://lore.kernel.org/r/20221214031137.28815-4-sherry.sun@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Sherry Sun 2022-12-14 11:11:37 +08:00 committed by Greg Kroah-Hartman
parent 10929eac41
commit 509597ebca
1 changed files with 2 additions and 1 deletions
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3
drivers/tty/serial/imx.c
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@ -1564,7 +1564,8 @@ static void imx_uart_shutdown(struct uart_port *port)
spin_lock_irqsave(&sport->port.lock, flags);
ucr1 = imx_uart_readl(sport, UCR1);
ucr1 &= ~(UCR1_TRDYEN | UCR1_RRDYEN | UCR1_RTSDEN | UCR1_RXDMAEN | UCR1_ATDMAEN);
ucr1 &= ~(UCR1_TRDYEN | UCR1_RRDYEN | UCR1_RTSDEN | UCR1_RXDMAEN |
UCR1_ATDMAEN | UCR1_SNDBRK);
/* See SER_RS485_ENABLED/UTS_LOOP comment in imx_uart_probe() */
if (port->rs485.flags & SER_RS485_ENABLED &&
port->rs485.flags & SER_RS485_RTS_ON_SEND &&