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authorRafael J. Wysocki <rjw@sisk.pl>2008-10-22 14:58:43 -0400
committerLen Brown <len.brown@intel.com>2008-10-22 14:58:43 -0400
commit5d1e072b6b9cffebefa681faca1c6d608310d4b2 (patch)
treebac15533a8a3a9a83bcde41132fd217298ed3978 /drivers
parent4d0b856ef7eea5c03f4c1fa57793286ac068f4cd (diff)
downloadlinux-5d1e072b6b9cffebefa681faca1c6d608310d4b2.tar.bz2
ACPI suspend: Fix CONFIG_ACPI_SLEEP dependence and some compilation warnings
Initially CONFIG_PM_SLEEP was defined as CONFIG_SUSPEND || CONFIG_HIBERNATION and some ACPI code, most importantly the code in drivers/acpi/main.c, was written with this assumption. Currently, however, CONFIG_PM_SLEEP is also set when CONFIG_XEN_SAVE_RESTORE is set. This causes some compilation warnings to appear in drivers/acpi/main.c if both CONFIG_SUSPEND and CONFIG_HIBERNATION are unset and CONFIG_PM_SLEEP is set (this was impossible before). To fix this problem, redefine CONFIG_ACPI_SLEEP do depend directly on CONFIG_SUSPEND || CONFIG_HIBERNATION, as originally intended, and use it instead of CONFIG_PM_SLEEP in drivers/acpi/main.c, wherever appropriate. Additionally, move the acpi_target_sleep_state definition from under the #ifdef to prevent compilation from failing in some cases. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/acpi/Kconfig2
-rw-r--r--drivers/acpi/sleep/main.c7
2 files changed, 4 insertions, 5 deletions
diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
index 79540db29808..325b4b5fa7df 100644
--- a/drivers/acpi/Kconfig
+++ b/drivers/acpi/Kconfig
@@ -42,7 +42,7 @@ if ACPI
config ACPI_SLEEP
bool
- depends on PM_SLEEP
+ depends on SUSPEND || HIBERNATION
default y
config ACPI_PROCFS
diff --git a/drivers/acpi/sleep/main.c b/drivers/acpi/sleep/main.c
index d13194a031bf..4c21480b5820 100644
--- a/drivers/acpi/sleep/main.c
+++ b/drivers/acpi/sleep/main.c
@@ -23,6 +23,7 @@
#include "sleep.h"
u8 sleep_states[ACPI_S_STATE_COUNT];
+static u32 acpi_target_sleep_state = ACPI_STATE_S0;
static int acpi_sleep_prepare(u32 acpi_state)
{
@@ -45,9 +46,7 @@ static int acpi_sleep_prepare(u32 acpi_state)
return 0;
}
-#ifdef CONFIG_PM_SLEEP
-static u32 acpi_target_sleep_state = ACPI_STATE_S0;
-
+#ifdef CONFIG_ACPI_SLEEP
/*
* ACPI 1.0 wants us to execute _PTS before suspending devices, so we allow the
* user to request that behavior by using the 'acpi_old_suspend_ordering'
@@ -132,7 +131,7 @@ static void acpi_pm_end(void)
*/
acpi_target_sleep_state = ACPI_STATE_S0;
}
-#endif /* CONFIG_PM_SLEEP */
+#endif /* CONFIG_ACPI_SLEEP */
#ifdef CONFIG_SUSPEND
extern void do_suspend_lowlevel(void);