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Date: Mon, 6 Jun 2022 13:04:27 +0300
From: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
To: linux-serial@...r.kernel.org, Greg KH <gregkh@...uxfoundation.org>,
Jiri Slaby <jirislaby@...nel.org>, linux-kernel@...r.kernel.org
Cc: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
Subject: [PATCH 30/36] serial: fsl_lpuart: Call core's sanitization and remove custom one
Serial core handles serial_rs485 sanitization. Remove custom
sanitization from lpuart_config_rs485.
This change loses dev_err when SER_RS485_RX_DURING_TX is set due to
incorrect configuration. Other drivers do not do similar prinout for
full-duplex case and it should be done in serial core if it is
desirable to notify on this condition. Personally, I doesn't see it
important because the kernel gracefully downgrades to half-duplex.
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
---
drivers/tty/serial/fsl_lpuart.c | 17 -----------------
1 file changed, 17 deletions(-)
diff --git a/drivers/tty/serial/fsl_lpuart.c b/drivers/tty/serial/fsl_lpuart.c
index 88692dc9eefa..d35414cb3e4e 100644
--- a/drivers/tty/serial/fsl_lpuart.c
+++ b/drivers/tty/serial/fsl_lpuart.c
@@ -1365,11 +1365,6 @@ static int lpuart_config_rs485(struct uart_port *port,
~(UARTMODEM_TXRTSPOL | UARTMODEM_TXRTSE);
writeb(modem, sport->port.membase + UARTMODEM);
- /* clear unsupported configurations */
- rs485->delay_rts_before_send = 0;
- rs485->delay_rts_after_send = 0;
- rs485->flags &= ~SER_RS485_RX_DURING_TX;
-
if (rs485->flags & SER_RS485_ENABLED) {
/* Enable auto RS-485 RTS mode */
modem |= UARTMODEM_TXRTSE;
@@ -1400,11 +1395,6 @@ static int lpuart32_config_rs485(struct uart_port *port,
& ~(UARTMODEM_TXRTSPOL | UARTMODEM_TXRTSE);
lpuart32_write(&sport->port, modem, UARTMODIR);
- /* clear unsupported configurations */
- rs485->delay_rts_before_send = 0;
- rs485->delay_rts_after_send = 0;
- rs485->flags &= ~SER_RS485_RX_DURING_TX;
-
if (rs485->flags & SER_RS485_ENABLED) {
/* Enable auto RS-485 RTS mode */
modem |= UARTMODEM_TXRTSE;
@@ -2723,13 +2713,6 @@ static int lpuart_probe(struct platform_device *pdev)
if (ret)
goto failed_get_rs485;
- if (sport->port.rs485.flags & SER_RS485_RX_DURING_TX)
- dev_err(&pdev->dev, "driver doesn't support RX during TX\n");
-
- if (sport->port.rs485.delay_rts_before_send ||
- sport->port.rs485.delay_rts_after_send)
- dev_err(&pdev->dev, "driver doesn't support RTS delays\n");
-
uart_rs485_config(&sport->port);
ret = devm_request_irq(&pdev->dev, sport->port.irq, handler, 0,
--
2.30.2
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