Thread (25 messages) 25 messages, 4 authors, 2022-07-05
STALE1483d
Revisions (4)
  1. v1 [diff vs current]
  2. v2 current
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  4. v4 [diff vs current]

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

From: Lino Sanfilippo <LinoSanfilippo@gmx.de>
Date: 2022-07-03 17:02:27
Also in: linux-devicetree, linux-serial, lkml
Subsystem: the rest, tty layer and serial drivers · Maintainers: Linus Torvalds, Greg Kroah-Hartman, Jiri Slaby

From: Lino Sanfilippo <redacted>

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 <redacted>
---
 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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