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tty/serial: Migrate sunhv 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/20191213000657.931618-46-dima@arista.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Dmitry Safonov 2019-12-13 00:06:44 +00:00 committed by Greg Kroah-Hartman
parent 9feedaa7f3
commit b071126bd8
1 changed files with 1 additions and 4 deletions
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5
drivers/tty/serial/sunhv.c
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@ -25,10 +25,6 @@
#include <asm/irq.h>
#include <asm/setup.h>
#if defined(CONFIG_MAGIC_SYSRQ)
#define SUPPORT_SYSRQ
#endif
#include <linux/serial_core.h>
#include <linux/sunserialcore.h>
@ -552,6 +548,7 @@ static int hv_probe(struct platform_device *op)
sunhv_port = port;
port->has_sysrq = 1;
port->line = 0;
port->ops = &sunhv_pops;
port->type = PORT_SUNHV;