From: Alan Jenkins <alan-jenkins@tuffmail.co.uk>
To: Zhao Yakui <yakui.zhao@intel.com>
Cc: Alexey Starikovskiy <astarikovskiy@suse.de>,
linux-acpi@vger.kernel.org, lenb@kernel.org
Subject: Re: a problem about the two patches in bug 10724 & 11428
Date: Tue, 02 Sep 2008 10:26:17 +0100 [thread overview]
Message-ID: <48BD06B9.4060204@tuffmail.co.uk> (raw)
In-Reply-To: <1220347864.4039.189.camel@yakui_zhao.sh.intel.com>
Zhao Yakui wrote:
> On Tue, 2008-09-02 at 12:36 +0400, Alexey Starikovskiy wrote:
>
>>> In fact when EC timeout happens in interrupt mode, it indicates that
>>> EC controller can't return response in time.
>>>
>> Wrong. Some EC controllers are "optimized" to not send interrupts for each confirmation.
>> See history of EC patches for these optimization workarounds.
>>
> Maybe what you said is right. But in fact as is defined in ACPI spec, EC
> controller should issue an interrupt according to the status of IBF and
> OBF. More detailed info about EC interrupt model can be found in the
> section 12.6.2 of ACPI 3.0b spec.
> If some EC controller are "optimized" to not send interrupts, is it
> appropriate to reject such bugs?
>
Not really. If it works on "The Other OS", it is a bug that it doesn't
work on this one. That's a specific policy of the linux ACPI
implementation. Given both the complexity and importance of ACPI I
think it is the right policy.
Alan
next prev parent reply other threads:[~2008-09-02 9:26 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-09-01 6:40 a problem about the two patches in bug 10724 & 11428 Zhao Yakui
2008-09-01 7:49 ` Alexey Starikovskiy
2008-09-01 9:55 ` Zhao Yakui
2008-09-01 12:18 ` Alexey Starikovskiy
2008-09-02 1:59 ` Zhao Yakui
2008-09-02 8:36 ` Alexey Starikovskiy
2008-09-02 9:31 ` Zhao Yakui
2008-09-02 9:26 ` Alan Jenkins [this message]
2008-09-02 9:30 ` Alexey Starikovskiy
2008-09-02 10:00 ` Zhao Yakui
2008-09-01 12:21 ` Henrique de Moraes Holschuh
2008-09-01 12:52 ` Alexey Starikovskiy
2008-09-01 20:35 ` Alexey Starikovskiy
2008-09-01 20:59 ` Alexey Starikovskiy
2008-09-02 1:03 ` Zhao Yakui
2008-09-02 2:03 ` Henrique de Moraes Holschuh
2008-09-02 3:39 ` Zhao Yakui
2008-09-02 9:19 ` Alan Jenkins
2008-09-02 8:05 ` Zhao Yakui
2008-09-03 6:02 ` Zhao Yakui
2008-09-03 6:46 ` Alexey Starikovskiy
2008-09-03 7:28 ` Zhao Yakui
2008-09-03 8:03 ` Zhao Yakui
2008-09-03 7:53 ` Alexey Starikovskiy
2008-09-03 8:34 ` Zhao Yakui
2008-09-03 21:55 ` RFC: fast transactions in EC [was: a problem about the two patches in bug 10724 & 11428] Alexey Starikovskiy
2008-09-04 2:58 ` Zhao Yakui
2008-09-04 3:06 ` Alexey Starikovskiy
2008-09-04 3:56 ` Alexey Starikovskiy
2008-09-04 4:51 ` Alexey Starikovskiy
2008-09-05 20:07 ` Andrew Morton
2008-09-08 8:19 ` Alexey Starikovskiy
2008-09-08 8:28 ` Andrew Morton
2008-09-08 8:30 ` Alexey Starikovskiy
2008-09-08 8:41 ` Andrew Morton
2008-09-03 22:28 ` a problem about the two patches in bug 10724 & 11428 Alexey Starikovskiy
2008-09-04 3:43 ` Zhao Yakui
2008-09-04 3:47 ` Alexey Starikovskiy
2008-09-04 6:00 ` Zhao Yakui
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