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Subject[PATCH 21/58] tty/serial: Migrate meson_uart to use has_sysrq
Date
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: Kevin Hilman <khilman@baylibre.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-amlogic@lists.infradead.org
Signed-off-by: Dmitry Safonov <dima@arista.com>
---
drivers/tty/serial/meson_uart.c | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/tty/serial/meson_uart.c b/drivers/tty/serial/meson_uart.c
index fbc5bc022a39..12e15358554c 100644
--- a/drivers/tty/serial/meson_uart.c
+++ b/drivers/tty/serial/meson_uart.c
@@ -5,10 +5,6 @@
* Copyright (C) 2014 Carlo Caione <carlo@caione.org>
*/

-#if defined(CONFIG_SERIAL_MESON_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
-#define SUPPORT_SYSRQ
-#endif
-
#include <linux/clk.h>
#include <linux/console.h>
#include <linux/delay.h>
@@ -703,6 +699,7 @@ static int meson_uart_probe(struct platform_device *pdev)
port->mapsize = resource_size(res_mem);
port->irq = res_irq->start;
port->flags = UPF_BOOT_AUTOCONF | UPF_LOW_LATENCY;
+ port->has_sysrq = IS_ENABLED(CONFIG_SERIAL_MESON_CONSOLE);
port->dev = &pdev->dev;
port->line = pdev->id;
port->type = PORT_MESON;
--
2.24.0
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