PM: Drop pm_flags that is not necessary

The variable pm_flags is used to prevent APM from being enabled
along with ACPI, which would lead to problems.  However, acpi_init()
is always called before apm_init() and after acpi_init() has
returned, it is known whether or not ACPI will be used.  Namely, if
acpi_disabled is not set after acpi_init() has returned, this means
that ACPI is enabled.  Thus, it is sufficient to check acpi_disabled
in apm_init() to prevent APM from being enabled in parallel with
ACPI.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Len Brown <len.brown@intel.com>

1 files changed, 0 insertions, 13 deletions

diff --git a/kernel/power/main.c b/kernel/power/main.c
index b5405af48ddb..8eaba5f27b10 100644
--- a/kernel/power/main.c
+++ b/kernel/power/main.c
@@ -19,19 +19,6 @@ DEFINE_MUTEX(pm_mutex);
 
 #ifdef CONFIG_PM_SLEEP
 
-unsigned int pm_flags;
-EXPORT_SYMBOL(pm_flags);
-
-bool pm_apm_enabled(void)
-{
-        return !!(pm_flags & PM_APM);
-}
-
-void pm_set_acpi_flag(void)
-{
-        pm_flags |= PM_ACPI;
-}
-
 /* Routines for PM-transition notifications */
 
 static BLOCKING_NOTIFIER_HEAD(pm_chain_head);