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From: Giulio Benetti <giulio.benetti@micronovasrl.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Jiri Slaby <jslaby@suse.com>,
	Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
	Kees Cook <keescook@chromium.org>,
	Matthias Brugger <mbrugger@suse.com>,
	Allen Pais <allen.lkml@gmail.com>, Sean Young <sean@mess.org>,
	Ed Blake <ed.blake@sondrel.com>,
	Stefan Potyra <Stefan.Potyra@elektrobit.com>,
	Philipp Zabel <p.zabel@pengutronix.de>,
	Joshua Scott <joshua.scott@alliedtelesis.co.nz>,
	Vignesh R <vigneshr@ti.com>,
	Rolf Evers-Fischer <rolf.evers.fischer@aptiv.com>,
	Aaron Sierra <asierra@xes-inc.com>,
	Rafael Gago <rafael.gago@gmail.com>,
	Joel Stanley <joel@jms.id.au>, Sean Wang <sean.wang@mediatek.com>,
	linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org,
	Giulio Benetti <giulio.benetti@micronovasrl.com>
Subject: [PATCH 6/8] serial: 8250: Copy mctrl when register port.
Date: Fri,  1 Jun 2018 14:40:19 +0200	[thread overview]
Message-ID: <20180601124021.102970-7-giulio.benetti@micronovasrl.com> (raw)
In-Reply-To: <20180601124021.102970-1-giulio.benetti@micronovasrl.com>

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@micronovasrl.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;
 
-- 
2.17.0

  parent reply	other threads:[~2018-06-01 12:41 UTC|newest]

Thread overview: 59+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-06-01 12:40 [PATCH 0/8] serial: 8250: Add 485 emulation to 8250_dw Giulio Benetti
2018-06-01 12:40 ` [PATCH 1/8] serial: 8250_dw: add em485 support Giulio Benetti
2018-06-01 12:40 ` [PATCH 2/8] serial: 8250_dw: allow enable rs485 at boot time Giulio Benetti
2018-06-01 12:40 ` [PATCH 3/8] serial: 8250: Copy em485 from port to real port Giulio Benetti
2018-06-04 10:13   ` Andy Shevchenko
2018-06-04 10:52     ` Giulio Benetti
2018-06-01 12:40 ` [PATCH 4/8] serial: 8250: Handle case port doesn't have TEMT interrupt using em485 Giulio Benetti
2018-06-04 10:17   ` Andy Shevchenko
2018-06-04 10:50     ` Giulio Benetti
2018-06-04 11:38       ` Andy Shevchenko
2018-06-04 11:50         ` Giulio Benetti
2018-06-04 12:26           ` Andy Shevchenko
2018-06-04 17:40   ` Matwey V. Kornilov
2018-06-04 18:50     ` Giulio Benetti
2018-06-05 10:51       ` Matwey V. Kornilov
2018-06-06  9:36         ` Giulio Benetti
2018-06-06  9:49         ` [PATCH 2/4] serial: 8250: Copy mctrl when register port Giulio Benetti
2018-06-06  9:49           ` Giulio Benetti
2018-06-06  9:49           ` [PATCH 3/4] serial: 8250: Make em485_rts_after_send() set mctrl according to rts state Giulio Benetti
2018-06-06  9:49             ` Giulio Benetti
2018-06-06 12:02             ` Andy Shevchenko
2018-06-06  9:49           ` [PATCH 4/4] serial: core: Mask mctrl with TIOCM_RTS too if rs485 on and RTS_AFTER_SEND set Giulio Benetti
2018-06-06  9:49             ` Giulio Benetti
2018-06-06 12:03             ` Andy Shevchenko
2018-06-06 12:07               ` Giulio Benetti
2018-06-06  9:49           ` [PATCH 1/4] serial: 8250: Copy em485 from port to real port Giulio Benetti
2018-06-06  9:49             ` Giulio Benetti
2018-06-06 11:56             ` Andy Shevchenko
2018-06-06 12:15               ` Giulio Benetti
2018-06-06 13:11                 ` Andy Shevchenko
2018-06-06 14:32                   ` Giulio Benetti
2018-06-06 18:55                   ` Matwey V. Kornilov
2018-06-06 19:15                     ` Giulio Benetti
2018-06-07  7:03                       ` Matwey V. Kornilov
2018-06-07 12:43                         ` Giulio Benetti
2018-06-06 12:01           ` [PATCH 2/4] serial: 8250: Copy mctrl when register port Andy Shevchenko
2018-06-06  9:51         ` [PATCH 2/4] serial: 8250_dw: allow enable rs485 at boot time Giulio Benetti
2018-06-06  9:51           ` Giulio Benetti
2018-06-06  9:51           ` [PATCH 3/4] serial: 8250: Handle case port doesn't have TEMT interrupt using em485 Giulio Benetti
2018-06-06  9:51             ` Giulio Benetti
2018-06-13 16:59             ` Alan Cox
2018-06-13 16:59               ` Alan Cox
2018-06-06  9:51           ` [PATCH 4/4] serial: 8250_dw: treat rpm suspend with -EBUSY if RS485 ON and RTS_AFTER_SEND Giulio Benetti
2018-06-06  9:51             ` Giulio Benetti
2018-06-06  9:51           ` [PATCH 1/4] serial: 8250_dw: add em485 support Giulio Benetti
2018-06-06  9:51             ` Giulio Benetti
2018-06-06 16:51             ` Andy Shevchenko
2018-06-06 19:16               ` Giulio Benetti
2018-06-01 12:40 ` [PATCH 5/8] serial: 8250_dw: treat rpm suspend with -EBUSY if RS485 ON and RTS_AFTER_SEND Giulio Benetti
2018-06-01 12:40 ` Giulio Benetti [this message]
2018-06-06 14:31   ` [PATCH 6/8] serial: 8250: Copy mctrl when register port Aaron Sierra
2018-06-06 14:44     ` Giulio Benetti
2018-06-01 12:40 ` [PATCH 7/8] serial: 8250: Make em485_rts_after_send() set mctrl according to rts state Giulio Benetti
2018-06-01 12:40 ` [PATCH 8/8] serial: core: Mask mctrl with TIOCM_RTS too if rs485 on and RTS_AFTER_SEND set Giulio Benetti
2018-06-04 10:12 ` [PATCH 0/8] serial: 8250: Add 485 emulation to 8250_dw Andy Shevchenko
2018-06-04 10:34   ` Matwey V. Kornilov
2018-06-04 10:42     ` Giulio Benetti
2018-06-04 11:44       ` Andy Shevchenko
2018-06-04 14:58         ` Giulio Benetti

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