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From: Shaohua Li <shaohua.li@intel.com>
To: Zhao Yakui <yakui.zhao@intel.com>
Cc: lenb@kernel.org, linux-acpi@vger.kernel.org
Subject: Re: [PATCH] ACPI : Disable the device's ability to wake the sleepingsystem in the boot phase
Date: Wed, 19 Mar 2008 10:40:14 +0800	[thread overview]
Message-ID: <1205894414.28955.2.camel@sli10-desk.sh.intel.com> (raw)
In-Reply-To: <1205819272.15975.3.camel@yakui_zhao.sh.intel.com>


On Tue, 2008-03-18 at 13:47 +0800, Zhao Yakui wrote:
> Subject: ACPI : Disable the device's ability to wake the sleeping
> system in the boot phase
> >From : Zhao Yakui <yakui.zhao@intel.com>
> 
> 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.
> 
> http://bugzilla.kernel.org/show_bug.cgi?id=9781
> http://bugzilla.kernel.org/show_bug.cgi?id=10224
Good catch, but I'm wondering if we should call _PSR early, eg in ACPICA
before GPE is enabled. Before the acpi bus scan time, the GPE might
already be invoked and cause interrupt flood.

Thanks,
Shaohua 


  reply	other threads:[~2008-03-19 19:38 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-03-18  5:47 [PATCH] ACPI : Disable the device's ability to wake the sleeping system in the boot phase Zhao Yakui
2008-03-19  2:40 ` Shaohua Li [this message]
2008-03-19  3:30   ` [PATCH] ACPI : Disable the device's ability to wake the sleepingsystem " Zhao Yakui

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