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tty/serial: Migrate sunsu to use has_sysrq

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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: "David S. Miller" <davem@davemloft.net>
Cc: sparclinux@vger.kernel.org
Signed-off-by: Dmitry Safonov <dima@arista.com>
Link: https://lore.kernel.org/r/20191213000657.931618-48-dima@arista.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Dmitry Safonov 2019-12-13 00:06:46 +00:00 committed by Greg Kroah-Hartman
parent cd8d71900f
commit 5e637d2be2
1 changed files with 1 additions and 4 deletions
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5
drivers/tty/serial/sunsu.c
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@ -44,10 +44,6 @@
#include <asm/prom.h>
#include <asm/setup.h>
#if defined(CONFIG_SERIAL_SUNSU_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
#define SUPPORT_SYSRQ
#endif
#include <linux/serial_core.h>
#include <linux/sunserialcore.h>
@ -1475,6 +1471,7 @@ static int su_probe(struct platform_device *op)
up->port.type = PORT_UNKNOWN;
up->port.uartclk = (SU_BASE_BAUD * 16);
up->port.has_sysrq = IS_ENABLED(CONFIG_SERIAL_SUNSU_CONSOLE);
err = 0;
if (up->su_type == SU_PORT_KBD || up->su_type == SU_PORT_MS) {