6.1-stable review patch. If anyone has any objections, please let me know.
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From: Sherry Sun sherry.sun@nxp.com
[ Upstream commit d57d56e4dddfb5c92cd81abf8922055bf0fb85a4 ]
For lpuart32 platforms, UARTMODIR register is used instead of UARTMODEM. So here should configure the corresponding UARTMODIR register bits to avoid confusion.
Reviewed-by: Ilpo Järvinen ilpo.jarvinen@linux.intel.com Signed-off-by: Sherry Sun sherry.sun@nxp.com Link: https://lore.kernel.org/r/20230414022111.20896-1-sherry.sun@nxp.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Stable-dep-of: f5cb528d6441 ("tty: serial: fsl_lpuart: disable transmitter before changing RS485 related registers") Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/tty/serial/fsl_lpuart.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/tty/serial/fsl_lpuart.c b/drivers/tty/serial/fsl_lpuart.c index f94c782638686..e96354edff6e9 100644 --- a/drivers/tty/serial/fsl_lpuart.c +++ b/drivers/tty/serial/fsl_lpuart.c @@ -1394,12 +1394,12 @@ static int lpuart32_config_rs485(struct uart_port *port, struct ktermios *termio struct lpuart_port, port);
unsigned long modem = lpuart32_read(&sport->port, UARTMODIR) - & ~(UARTMODEM_TXRTSPOL | UARTMODEM_TXRTSE); + & ~(UARTMODIR_TXRTSPOL | UARTMODIR_TXRTSE); lpuart32_write(&sport->port, modem, UARTMODIR);
if (rs485->flags & SER_RS485_ENABLED) { /* Enable auto RS-485 RTS mode */ - modem |= UARTMODEM_TXRTSE; + modem |= UARTMODIR_TXRTSE;
/* * The hardware defaults to RTS logic HIGH while transfer. @@ -1408,9 +1408,9 @@ 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; + modem |= UARTMODIR_TXRTSPOL; else if (rs485->flags & SER_RS485_RTS_AFTER_SEND) - modem &= ~UARTMODEM_TXRTSPOL; + modem &= ~UARTMODIR_TXRTSPOL; }
lpuart32_write(&sport->port, modem, UARTMODIR);