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ACPI and APM used "pm_active" to guarantee that they would not be simultaneously active. But pm_active was recently moved under CONFIG_PM_LEGACY, so that without CONFIG_PM_LEGACY, pm_active became a NOP -- allowing ACPI and APM to both be simultaneously enabled. This caused unpredictable results, including boot hangs. Further, the code under CONFIG_PM_LEGACY is scheduled for removal. So replace pm_active with pm_flags. pm_flags depends only on CONFIG_PM, which is present for both CONFIG_APM and CONFIG_ACPI. http://bugzilla.kernel.org/show_bug.cgi?id=9194 Signed-off-by: Len Brown <len.brown@intel.com> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
36 lines
638 B
C
36 lines
638 B
C
#ifndef __LINUX_PM_LEGACY_H__
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#define __LINUX_PM_LEGACY_H__
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#ifdef CONFIG_PM_LEGACY
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/*
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* Register a device with power management
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*/
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struct pm_dev __deprecated *
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pm_register(pm_dev_t type, unsigned long id, pm_callback callback);
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/*
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* Send a request to all devices
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*/
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int __deprecated pm_send_all(pm_request_t rqst, void *data);
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#else /* CONFIG_PM_LEGACY */
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static inline struct pm_dev *pm_register(pm_dev_t type,
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unsigned long id,
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pm_callback callback)
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{
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return NULL;
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}
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static inline int pm_send_all(pm_request_t rqst, void *data)
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{
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return 0;
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}
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#endif /* CONFIG_PM_LEGACY */
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#endif /* __LINUX_PM_LEGACY_H__ */
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