Thread (36 messages) 36 messages, 4 authors, 2022-06-30
STALE1488d
Revisions (4)
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  2. v2 [diff vs current]
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[PATCH 4/8] serial: core: sanitize RS485 delays read from device tree

From: Lino Sanfilippo <LinoSanfilippo@gmx.de>
Date: 2022-06-22 15:48:02
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 fa6acadd7d0c..2e9f90e73e62 100644
--- a/drivers/tty/serial/serial_core.c
+++ b/drivers/tty/serial/serial_core.c
@@ -3382,6 +3382,8 @@ 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:
-- 
2.36.1

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