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PM: Drop pm_flags that is not necessary

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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>
This commit is contained in:
Rafael J. Wysocki
2011-02-15 21:22:24 +01:00
parent e866500247
commit 6831c6edc7
5 changed files with 7 additions and 48 deletions
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9
include/linux/pm.h
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@@ -565,15 +565,6 @@ enum dpm_order {
DPM_ORDER_DEV_LAST,
};
/*
* Global Power Management flags
* Used to keep APM and ACPI from both being active
*/
extern unsigned int pm_flags;
#define PM_APM 1
#define PM_ACPI 2
extern int pm_generic_suspend(struct device *dev);
extern int pm_generic_resume(struct device *dev);
extern int pm_generic_freeze(struct device *dev);