In uart_set_rs485_config() the serial core already ensures that only one of
both options RTS on send or RTS after send is set. It also assigns the
passed serial_rs485 struct to the uart port.
So remove the check and the assignment from the drivers rs485_config()
function to avoid redundancy.
Signed-off-by: Lino Sanfilippo <[email protected]>
---
drivers/tty/serial/fsl_lpuart.c | 32 --------------------------------
1 file changed, 32 deletions(-)
diff --git a/drivers/tty/serial/fsl_lpuart.c b/drivers/tty/serial/fsl_lpuart.c
index 7d90c5a530ee..a201be44d68a 100644
--- a/drivers/tty/serial/fsl_lpuart.c
+++ b/drivers/tty/serial/fsl_lpuart.c
@@ -1377,19 +1377,6 @@ static int lpuart_config_rs485(struct uart_port *port,
/* Enable auto RS-485 RTS mode */
modem |= UARTMODEM_TXRTSE;
- /*
- * RTS needs to be logic HIGH either during transfer _or_ after
- * transfer, other variants are not supported by the hardware.
- */
-
- if (!(rs485->flags & (SER_RS485_RTS_ON_SEND |
- SER_RS485_RTS_AFTER_SEND)))
- rs485->flags |= SER_RS485_RTS_ON_SEND;
-
- if (rs485->flags & SER_RS485_RTS_ON_SEND &&
- rs485->flags & SER_RS485_RTS_AFTER_SEND)
- rs485->flags &= ~SER_RS485_RTS_AFTER_SEND;
-
/*
* The hardware defaults to RTS logic HIGH while transfer.
* Switch polarity in case RTS shall be logic HIGH
@@ -1402,9 +1389,6 @@ static int lpuart_config_rs485(struct uart_port *port,
modem |= UARTMODEM_TXRTSPOL;
}
- /* Store the new configuration */
- sport->port.rs485 = *rs485;
-
writeb(modem, sport->port.membase + UARTMODEM);
return 0;
}
@@ -1428,19 +1412,6 @@ static int lpuart32_config_rs485(struct uart_port *port,
/* Enable auto RS-485 RTS mode */
modem |= UARTMODEM_TXRTSE;
- /*
- * RTS needs to be logic HIGH either during transfer _or_ after
- * transfer, other variants are not supported by the hardware.
- */
-
- if (!(rs485->flags & (SER_RS485_RTS_ON_SEND |
- SER_RS485_RTS_AFTER_SEND)))
- rs485->flags |= SER_RS485_RTS_ON_SEND;
-
- if (rs485->flags & SER_RS485_RTS_ON_SEND &&
- rs485->flags & SER_RS485_RTS_AFTER_SEND)
- rs485->flags &= ~SER_RS485_RTS_AFTER_SEND;
-
/*
* The hardware defaults to RTS logic HIGH while transfer.
* Switch polarity in case RTS shall be logic HIGH
@@ -1453,9 +1424,6 @@ static int lpuart32_config_rs485(struct uart_port *port,
modem |= UARTMODEM_TXRTSPOL;
}
- /* Store the new configuration */
- sport->port.rs485 = *rs485;
-
lpuart32_write(&sport->port, modem, UARTMODIR);
return 0;
}
--
2.35.1