linux-kernel - [PATCH 06/58] tty/serial: Migrate bcm63xx_uart to use has

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Message-Id: <20191213000657.931618-7-dima@arista.com>
Date:   Fri, 13 Dec 2019 00:06:05 +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,
        Florian Fainelli <f.fainelli@...il.com>,
        bcm-kernel-feedback-list@...adcom.com,
        linux-arm-kernel@...ts.infradead.org
Subject: [PATCH 06/58] tty/serial: Migrate bcm63xx_uart 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: Florian Fainelli <f.fainelli@...il.com>
Cc: bcm-kernel-feedback-list@...adcom.com
Cc: linux-arm-kernel@...ts.infradead.org
Signed-off-by: Dmitry Safonov <dima@...sta.com>
---
 drivers/tty/serial/bcm63xx_uart.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/tty/serial/bcm63xx_uart.c b/drivers/tty/serial/bcm63xx_uart.c
index b7adc6127b3d..5674da2b76f0 100644
--- a/drivers/tty/serial/bcm63xx_uart.c
+++ b/drivers/tty/serial/bcm63xx_uart.c
@@ -10,10 +10,6 @@
  * my board.
  */
 
-#if defined(CONFIG_SERIAL_BCM63XX_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
-#define SUPPORT_SYSRQ
-#endif
-
 #include <linux/kernel.h>
 #include <linux/platform_device.h>
 #include <linux/init.h>
@@ -858,6 +854,7 @@ static int bcm_uart_probe(struct platform_device *pdev)
 	port->fifosize = 16;
 	port->uartclk = clk_get_rate(clk) / 2;
 	port->line = pdev->id;
+	port->has_sysrq = IS_ENABLED(CONFIG_SERIAL_BCM63XX_CONSOLE);
 	clk_put(clk);
 
 	ret = uart_add_one_port(&bcm_uart_driver, port);
-- 
2.24.0