Introduce the config option CONFIG_VT_CONSOLE_SLEEP in order to cleanup
the #if defined ugliness for the vt suspend support functions. Note that
CONFIG_VT_CONSOLE is already dependant on CONFIG_VT.
The function pm_set_vt_switch is actually dependant on CONFIG_VT and not
CONFIG_PM_SLEEP. This fixes a compile error when CONFIG_PM_SLEEP is
not set:
drivers/tty/vt/vt_ioctl.c:1794: error: redefinition of 'pm_set_vt_switch'
include/linux/suspend.h:17: error: previous definition of 'pm_set_vt_switch' was here
Also, remove the incorrect path from the comment in console.c.
Signed-off-by: H Hartley Sweeten <hsweeten@xxxxxxxxxxxxxxxxxxx>
Cc: Arnd Bergmann <arnd@xxxxxxx>
Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxx>
Cc: Pavel Machek <pavel@xxxxxx>
Cc: "Rafael J. Wysocki" <rjw@xxxxxxx>
Cc: Len Brown <len.brown@xxxxxxxxx>
Cc: Arthur Taylor <art@xxxxxxxx>
Cc: Jiri Slaby <jslaby@xxxxxxx>
---
This is a revised version of the patch "vt_ioctl.c: fix compile error with
pm_set_vt_switch()" that I sent last week. Alan Cox asked if the #if uglies
could be moved into the header to keep the code clean. Arnd Bergmann then
submitted a revised patch that did this. This now includes Arnd's fix and along
with the addition of CONFIG_VT_CONSOLE_SLEEP.
diff --git a/drivers/tty/Kconfig b/drivers/tty/Kconfig
index f1ea59b..565fe0f 100644
--- a/drivers/tty/Kconfig
+++ b/drivers/tty/Kconfig
@@ -60,6 +60,10 @@ config VT_CONSOLE
If unsure, say Y.
+config VT_CONSOLE_SLEEP
+ def_bool y
+ depends on VT_CONSOLE && PM_SLEEP
+
config HW_CONSOLE
bool
depends on VT && !S390 && !UML
diff --git a/include/linux/suspend.h b/include/linux/suspend.h
index 46f3548..c3da030 100644
--- a/include/linux/suspend.h
+++ b/include/linux/suspend.h
@@ -8,15 +8,18 @@
#include <linux/mm.h>
#include <asm/errno.h>
-#if defined(CONFIG_PM_SLEEP) && defined(CONFIG_VT) && defined(CONFIG_VT_CONSOLE)
+#if defined(CONFIG_VT)
extern void pm_set_vt_switch(int);
-extern int pm_prepare_console(void);
-extern void pm_restore_console(void);
#else
static inline void pm_set_vt_switch(int do_switch)
{
}
+#endif
+#if defined(CONFIG_VT_CONSOLE_SLEEP)
+extern int pm_prepare_console(void);
+extern void pm_restore_console(void);
+#else
static inline int pm_prepare_console(void)
{
return 0;
diff --git a/kernel/power/Makefile b/kernel/power/Makefile
index ad6bdd8..07e0e28 100644
--- a/kernel/power/Makefile
+++ b/kernel/power/Makefile
@@ -2,7 +2,7 @@
ccflags-$(CONFIG_PM_DEBUG) := -DDEBUG
obj-$(CONFIG_PM) += main.o qos.o
-obj-$(CONFIG_PM_SLEEP) += console.o
+obj-$(CONFIG_VT_CONSOLE_SLEEP) += console.o
obj-$(CONFIG_FREEZER) += process.o
obj-$(CONFIG_SUSPEND) += suspend.o
obj-$(CONFIG_PM_TEST_SUSPEND) += suspend_test.o
diff --git a/kernel/power/console.c b/kernel/power/console.c
index 218e5af..b1dc456 100644
--- a/kernel/power/console.c
+++ b/kernel/power/console.c
@@ -1,5 +1,5 @@
/*
- * drivers/power/process.c - Functions for saving/restoring console.
+ * Functions for saving/restoring console.
*
* Originally from swsusp.
*/
@@ -10,7 +10,6 @@
#include <linux/module.h>
#include "power.h"
-#if defined(CONFIG_VT) && defined(CONFIG_VT_CONSOLE)
#define SUSPEND_CONSOLE (MAX_NR_CONSOLES-1)
static int orig_fgconsole, orig_kmsg;
@@ -32,4 +31,3 @@ void pm_restore_console(void)
vt_kmsg_redirect(orig_kmsg);
}
}
-#endif
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