[PATCH v2 4/9] serial: core: sanitize RS485 delays read from device tree

Lino Sanfilippo LinoSanfilippo at gmx.de
Sun Jul 3 10:00:34 PDT 2022


From: Lino Sanfilippo <l.sanfilippo at kunbus.com>

When setting the RS485 configuration from userspace via TIOCSRS485 the
delays are clamped to 100ms. Make this consistent with the values passed
in by means of device tree parameters.

Signed-off-by: Lino Sanfilippo <l.sanfilippo at kunbus.com>
---
 drivers/tty/serial/serial_core.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c
index 05ed3acad09a..58cdad5f45dd 100644
--- a/drivers/tty/serial/serial_core.c
+++ b/drivers/tty/serial/serial_core.c
@@ -3395,6 +3395,8 @@ int uart_get_rs485_mode(struct uart_port *port)
 		rs485conf->delay_rts_after_send = 0;
 	}
 
+	uart_sanitize_serial_rs485_delays(port, rs485conf);
+
 	/*
 	 * Clear full-duplex and enabled flags, set RTS polarity to active high
 	 * to get to a defined state with the following properties:
-- 
2.25.1



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