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Date: Wed, 6 Jun 2018 11:49:37 +0200
From: Giulio Benetti <giulio.benetti@...ronovasrl.com>
To: unlisted-recipients:; (no To-header on input)
Cc: matwey.kornilov@...il.com,
Giulio Benetti <giulio.benetti@...ronovasrl.com>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Jiri Slaby <jslaby@...e.com>,
Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
Matthias Brugger <mbrugger@...e.com>,
Kees Cook <keescook@...omium.org>,
Allen Pais <allen.lkml@...il.com>, Sean Young <sean@...s.org>,
linux-serial@...r.kernel.org (open list:SERIAL DRIVERS),
linux-kernel@...r.kernel.org (open list)
Subject: [PATCH 2/4] serial: 8250: Copy mctrl when register port.
RS485 can modify mctrl on startup, especially when RTS_AFTER_SEND is on
TIOCM_RTS is set, then need to keep it set when registering port.
Copy mctrl to new port too.
Signed-off-by: Giulio Benetti <giulio.benetti@...ronovasrl.com>
---
drivers/tty/serial/8250/8250_core.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/tty/serial/8250/8250_core.c b/drivers/tty/serial/8250/8250_core.c
index c8c2b260c681..c8e62fbd6570 100644
--- a/drivers/tty/serial/8250/8250_core.c
+++ b/drivers/tty/serial/8250/8250_core.c
@@ -993,6 +993,7 @@ int serial8250_register_8250_port(struct uart_8250_port *up)
uart->port.unthrottle = up->port.unthrottle;
uart->port.rs485_config = up->port.rs485_config;
uart->port.rs485 = up->port.rs485;
+ uart->port.mctrl = up->port.mctrl;
uart->dma = up->dma;
uart->em485 = up->em485;
--
2.17.1
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