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Message-Id: <20191213000657.931618-20-dima@arista.com>
Date: Fri, 13 Dec 2019 00:06:18 +0000
From: Dmitry Safonov <dima@...sta.com>
To: linux-kernel@...r.kernel.org
Cc: Dmitry Safonov <0x7f454c46@...il.com>,
Dmitry Safonov <dima@...sta.com>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Jiri Slaby <jslaby@...e.com>,
Vasiliy Khoruzhick <vasilykh@...sta.com>,
linux-serial@...r.kernel.org, Fabio Estevam <festevam@...il.com>,
NXP Linux Team <linux-imx@....com>,
Pengutronix Kernel Team <kernel@...gutronix.de>,
Sascha Hauer <s.hauer@...gutronix.de>,
Shawn Guo <shawnguo@...nel.org>,
linux-arm-kernel@...ts.infradead.org
Subject: [PATCH 19/58] tty/serial: Migrate imx to use has_sysrq
The SUPPORT_SYSRQ ifdeffery is not nice as:
- May create misunderstanding about sizeof(struct uart_port) between
different objects
- Prevents moving functions from serial_core.h
- Reduces readability (well, it's ifdeffery - it's hard to follow)
In order to remove SUPPORT_SYSRQ, has_sysrq variable has been added.
Initialise it in driver's probe and remove ifdeffery.
Cc: Fabio Estevam <festevam@...il.com>
Cc: NXP Linux Team <linux-imx@....com>
Cc: Pengutronix Kernel Team <kernel@...gutronix.de>
Cc: Sascha Hauer <s.hauer@...gutronix.de>
Cc: Shawn Guo <shawnguo@...nel.org>
Cc: linux-arm-kernel@...ts.infradead.org
Signed-off-by: Dmitry Safonov <dima@...sta.com>
---
drivers/tty/serial/imx.c | 7 +------
1 file changed, 1 insertion(+), 6 deletions(-)
diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c
index a9e20e6c63ad..83c6e2ac0e8d 100644
--- a/drivers/tty/serial/imx.c
+++ b/drivers/tty/serial/imx.c
@@ -8,10 +8,6 @@
* Copyright (C) 2004 Pengutronix
*/
-#if defined(CONFIG_SERIAL_IMX_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
-#define SUPPORT_SYSRQ
-#endif
-
#include <linux/module.h>
#include <linux/ioport.h>
#include <linux/init.h>
@@ -779,9 +775,7 @@ static irqreturn_t imx_uart_rxint(int irq, void *dev_id)
if (rx & URXD_OVRRUN)
flg = TTY_OVERRUN;
-#ifdef SUPPORT_SYSRQ
sport->port.sysrq = 0;
-#endif
}
if (sport->port.ignore_status_mask & URXD_DUMMY_READ)
@@ -2231,6 +2225,7 @@ static int imx_uart_probe(struct platform_device *pdev)
sport->port.iotype = UPIO_MEM;
sport->port.irq = rxirq;
sport->port.fifosize = 32;
+ sport->port.has_sysrq = IS_ENABLED(CONFIG_SERIAL_IMX_CONSOLE);
sport->port.ops = &imx_uart_pops;
sport->port.rs485_config = imx_uart_rs485_config;
sport->port.flags = UPF_BOOT_AUTOCONF;
--
2.24.0
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