[SERIAL]: Sanitize sparc serial console configuration.

drivers/serial/Kconfig

@@ -326,6 +326,14 @@ config SERIAL_SUNZILOG
 	  This driver supports the Zilog8530 serial ports found on many Sparc
 	  systems.  Say Y or M if you want to be able to these serial ports.
 
+config SERIAL_SUNZILOG_CONSOLE
+	bool "Console on Sun Zilog8530 serial port"
+	depends on SERIAL_SUNZILOG=y
+	help
+	  If you would like to be able to use the Zilog8530 serial port
+	  on your Sparc system as the console, you can do so by answering
+	  Y to this option.
+
 config SERIAL_SUNSU
 	tristate "Sun SU serial support"
 	depends on (SPARC32 || SPARC64) && PCI
@@ -334,6 +342,14 @@ config SERIAL_SUNSU
 	  mouse on (PCI) UltraSPARC systems.  Say Y or M if you want to be able
 	  to these serial ports.
 
+config SERIAL_SUNSU_CONSOLE
+	bool "Console on Sun SU serial port"
+	depends on SERIAL_SUNSU=y
+	help
+	  If you would like to be able to use the SU serial port
+	  on your Sparc system as the console, you can do so by answering
+	  Y to this option.
+
 config SERIAL_MUX
 	tristate "Serial MUX support"
 	depends on PARISC
@@ -380,6 +396,14 @@ config SERIAL_SUNSAB
 	  (PCI) UltraSPARC systems.  Say Y or M if you want to be able to these
 	  serial ports.
 
+config SERIAL_SUNSAB_CONSOLE
+	bool "Console on Sun Siemens SAB82532 serial port"
+	depends on SERIAL_SUNSAB=y
+	help
+	  If you would like to be able to use the SAB82532 serial port
+	  on your Sparc system as the console, you can do so by answering
+	  Y to this option.
+
 config V850E_NB85E_UART
 	bool "NEC V850E on-chip UART support"
 	depends on V850E_NB85E || V850E2_ANNA || V850E_AS85EP1
@@ -407,7 +431,7 @@ config SERIAL_CORE
 
 config SERIAL_CORE_CONSOLE
 	bool
-	depends on SERIAL_AMBA_CONSOLE || SERIAL_CLPS711X_CONSOLE || SERIAL_21285_CONSOLE || SERIAL_SA1100_CONSOLE || SERIAL_ANAKIN_CONSOLE || SERIAL_UART00_CONSOLE || SERIAL_8250_CONSOLE || SERIAL_MUX_CONSOLE || SERIAL_SUNCORE || V850E_NB85E_UART_CONSOLE || SERIAL98_CONSOLE
+	depends on SERIAL_AMBA_CONSOLE || SERIAL_CLPS711X_CONSOLE || SERIAL_21285_CONSOLE || SERIAL_SA1100_CONSOLE || SERIAL_ANAKIN_CONSOLE || SERIAL_UART00_CONSOLE || SERIAL_8250_CONSOLE || SERIAL_MUX_CONSOLE || SERIAL_SUNZILOG_CONSOLE || SERIAL_SUNSU_CONSOLE || SERIAL_SUNSAB_CONSOLE || V850E_NB85E_UART_CONSOLE || SERIAL98_CONSOLE
 	default y
 
 config SERIAL_68328

drivers/serial/sunsab.c

@@ -28,6 +28,7 @@
 #include <linux/ioport.h>
 #include <linux/circ_buf.h>
 #include <linux/serial.h>
+#include <linux/sysrq.h>
 #include <linux/console.h>
 #include <linux/spinlock.h>
 #include <linux/slab.h>
@@ -38,6 +39,10 @@
 #include <asm/oplib.h>
 #include <asm/ebus.h>
 
+#if defined(CONFIG_SERIAL_SUNZILOG_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
+#define SUPPORT_SYSRQ
+#endif
+
 #include <linux/serial_core.h>
 
 #include "suncore.h"
@@ -838,6 +843,8 @@ static struct uart_driver sunsab_reg = {
 static struct uart_sunsab_port *sunsab_ports;
 static int num_channels;
 
+#ifdef CONFIG_SERIAL_SUNSAB_CONSOLE
+
 static __inline__ void sunsab_console_putchar(struct uart_sunsab_port *up, char c)
 {
 	unsigned long flags;
@@ -929,6 +936,7 @@ static struct console sunsab_console = {
 	.index	=	-1,
 	.data	=	&sunsab_reg,
 };
+#define SUNSAB_CONSOLE	(&sunsab_console)
 
 static void __init sunsab_console_init(void)
 {
@@ -949,6 +957,10 @@ static void __init sunsab_console_init(void)
 	sunsab_console.index = i;
 	register_console(&sunsab_console);
 }
+#else
+#define SUNSAB_CONSOLE		(NULL)
+#define sunsab_console_init()	do { } while (0)
+#endif
 
 static void __init for_each_sab_edev(void (*callback)(struct linux_ebus_device *, void *), void *arg)
 {
@@ -1091,7 +1103,7 @@ static int __init sunsab_init(void)
 
 	sunsab_reg.minor = sunserial_current_minor;
 	sunsab_reg.nr = num_channels;
-	sunsab_reg.cons = &sunsab_console;
+	sunsab_reg.cons = SUNSAB_CONSOLE;
 
 	ret = uart_register_driver(&sunsab_reg);
 	if (ret < 0) {

drivers/serial/sunsu.c

@@ -46,8 +46,7 @@
 #include <asm/isa.h>
 #endif
 
-/* #if defined(CONFIG_SERIAL_8250_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ) */
-#if defined(CONFIG_MAGIC_SYSRQ)
+#if defined(CONFIG_SERIAL_SUNSU_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
 #define SUPPORT_SYSRQ
 #endif
 
@@ -1347,6 +1346,8 @@ static int __init sunsu_kbd_ms_init(void)
  * ------------------------------------------------------------
  */
 
+#ifdef CONFIG_SERIAL_SUNSU_CONSOLE
+
 #define BOTH_EMPTY (UART_LSR_TEMT | UART_LSR_THRE)
 
 /*
@@ -1465,6 +1466,7 @@ static struct console sunsu_cons = {
 	.index	=	-1,
 	.data	=	&sunsu_reg,
 };
+#define SUNSU_CONSOLE	(&sunsu_cons)
 
 /*
  *	Register console.
@@ -1492,6 +1494,10 @@ static int __init sunsu_serial_console_init(void)
 	register_console(&sunsu_cons);
 	return 0;
 }
+#else
+#define SUNSU_CONSOLE			(NULL)
+#define sunsu_serial_console_init()	do { } while (0)
+#endif
 
 static int __init sunsu_serial_init(void)
 {
@@ -1522,7 +1528,7 @@ static int __init sunsu_serial_init(void)
 	sunserial_current_minor += instance;
 
 	sunsu_reg.nr = instance;
-	sunsu_reg.cons = &sunsu_cons;
+	sunsu_reg.cons = SUNSU_CONSOLE;
 
 	ret = uart_register_driver(&sunsu_reg);
 	if (ret < 0)

drivers/serial/sunzilog.c

@@ -28,6 +28,7 @@
 #include <linux/slab.h>
 #include <linux/circ_buf.h>
 #include <linux/serial.h>
+#include <linux/sysrq.h>
 #include <linux/console.h>
 #include <linux/spinlock.h>
 #ifdef CONFIG_SERIO
@@ -42,6 +43,10 @@
 #endif
 #include <asm/sbus.h>
 
+#if defined(CONFIG_SERIAL_SUNZILOG_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
+#define SUPPORT_SYSRQ
+#endif
+
 #include <linux/serial_core.h>
 
 #include "suncore.h"
@@ -1331,6 +1336,7 @@ static void sunzilog_serio_close(struct serio *serio)
 
 #endif /* CONFIG_SERIO */
 
+#ifdef CONFIG_SERIAL_SUNZILOG_CONSOLE
 static void
 sunzilog_console_write(struct console *con, const char *s, unsigned int count)
 {
@@ -1400,6 +1406,7 @@ static struct console sunzilog_console = {
 	.index	=	-1,
 	.data   =	&sunzilog_reg,
 };
+#define SUNZILOG_CONSOLE	(&sunzilog_console)
 
 static int __init sunzilog_console_init(void)
 {
@@ -1422,6 +1429,10 @@ static int __init sunzilog_console_init(void)
 	register_console(&sunzilog_console);
 	return 0;
 }
+#else
+#define SUNZILOG_CONSOLE	(NULL)
+#define sunzilog_console_init() do { } while (0)
+#endif
 
 /*
  * We scan the PROM tree recursively. This is the most reliable way
@@ -1639,7 +1650,7 @@ static int __init sunzilog_ports_init(void)
 	 * in the system.
 	 */
 	sunzilog_reg.nr = NUM_CHANNELS;
-	sunzilog_reg.cons = &sunzilog_console;
+	sunzilog_reg.cons = SUNZILOG_CONSOLE;
 
 	sunzilog_reg.minor = sunserial_current_minor;
 	sunserial_current_minor += NUM_CHANNELS;