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authorZhao Yakui <yakui.zhao@intel.com>2008-03-19 13:26:54 +0800
committerLen Brown <len.brown@intel.com>2008-04-09 21:57:22 -0400
commit729b2bdbfa19dd9be98dbd49caf2773b3271cc24 (patch)
tree525cca2b27a6252e54fea99db36d748ba299e32c /kernel/power/pm.c
parent7180c4c9e09888db0a188f729c96c6d7bd61fa83 (diff)
ACPI : Disable the device's ability to wake the sleeping system in the boot phase
In some machines some GPE is shared by several ACPI devices, for example: sleep button, keyboard, mouse. At the same time one of them is non-wake(runtime) device and the other are wake devices. In such case OSPM should call the _PSW object to disable the device's ability to wake the sleeping system in the boot phase. Otherwise there will be ACPI interrupt flood triggered by the GPE input. The _PSW object is depreciated in ACPI 3.0 and is replaced by _DSW. So it is necessary to call _DSW object first. Only when it is not present will the _PSW object used. http://bugzilla.kernel.org/show_bug.cgi?id=10224 Signed-off-by: Zhao Yakui <yakui.zhao@intel.com> Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'kernel/power/pm.c')
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