diff options
| author | Shenwei Wang <shenwei.wang@nxp.com> | 2023-02-07 10:24:20 -0600 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-02-08 13:08:31 +0100 |
| commit | 3957b9501a5a8fa709ae4a47483714491471f6db (patch) | |
| tree | 643c264484ee0bc2694a090a968662385636ec23 /drivers/tty/serial/fsl_lpuart.c | |
| parent | f6b2ce79b5fbbb330f56262f0f4373d6af60b602 (diff) | |
serial: fsl_lpuart: fix RS485 RTS polariy inverse issue
The previous 'commit 846651eca073 ("serial: fsl_lpuart: RS485 RTS
polariy is inverse")' only fixed the inverse issue on lpuart 8bit
platforms.
This is a follow-up patch to fix the RS485 polarity inverse
issue on lpuart 32bit platforms.
Fixes: 03895cf41d18 ("tty: serial: fsl_lpuart: Add support for RS-485")
Reported-by: Sherry Sun <sherry.sun@nxp.com>
Signed-off-by: Shenwei Wang <shenwei.wang@nxp.com>
Link: https://lore.kernel.org/r/20230207162420.3647904-1-shenwei.wang@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/serial/fsl_lpuart.c')
| -rw-r--r-- | drivers/tty/serial/fsl_lpuart.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/tty/serial/fsl_lpuart.c b/drivers/tty/serial/fsl_lpuart.c index 644827e97cb0..e945f41b93d4 100644 --- a/drivers/tty/serial/fsl_lpuart.c +++ b/drivers/tty/serial/fsl_lpuart.c @@ -1413,9 +1413,9 @@ static int lpuart32_config_rs485(struct uart_port *port, struct ktermios *termio * Note: UART is assumed to be active high. */ if (rs485->flags & SER_RS485_RTS_ON_SEND) - modem &= ~UARTMODEM_TXRTSPOL; - else if (rs485->flags & SER_RS485_RTS_AFTER_SEND) modem |= UARTMODEM_TXRTSPOL; + else if (rs485->flags & SER_RS485_RTS_AFTER_SEND) + modem &= ~UARTMODEM_TXRTSPOL; } lpuart32_write(&sport->port, modem, UARTMODIR); |