From: Kumar Gala <galak@kernel.crashing.org>
To: Li Yang <leoli@freescale.com>
Cc: linuxppc-dev@ozlabs.org,
"<dayu@datangmobile.cn>" <dayu@datangmobile.cn>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] fix the interrupt loss problem on powerpc IPIC (2.6.23)
Date: Tue, 17 Feb 2009 08:43:03 -0600 [thread overview]
Message-ID: <22854A2F-2FBD-4F1A-B623-DB5C91E97509@kernel.crashing.org> (raw)
In-Reply-To: <2a27d3730902170638h43724c03k6b50843158842e1e@mail.gmail.com>
On Feb 17, 2009, at 8:38 AM, Li Yang wrote:
> On Tue, Feb 17, 2009 at 10:12 PM, Kumar Gala <galak@kernel.crashing.org
> > wrote:
>>
>> On Feb 17, 2009, at 6:44 AM, <dayu@datangmobile.cn> <dayu@datangmobile.cn
>> >
>> wrote:
>>
>>> From: Da Yu <dayu@datangmobile.cn>
>>> Date: Tue, 17 Feb 2009 19:58:20 +0800
>>> Subject: [PATCH] fix the interrupt loss problem on powerpc IPIC
>>> (2.6.23)
>>>
>>> Signed-off-by: Da Yu <dayu@datangmobile.cn>
>>> ---
>>
>> Please provide a bit more description as to why this fixes the issue.
>
> The pending register is write 1 clear. If there are more than one
> external interrupts pending at the same time, acking the first
> interrupt will also clear other interrupt pending bits. That will
> cause loss of interrupt.
>
> - Leo
Thanks. That should be included in the commit message.
- k
prev parent reply other threads:[~2009-02-17 14:43 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-02-17 12:44 [PATCH] fix the interrupt loss problem on powerpc IPIC (2.6.23) dayu
2009-02-17 14:12 ` Kumar Gala
2009-02-17 14:32 ` Josh Boyer
2009-02-17 14:55 ` Li Yang
2009-02-17 14:38 ` Li Yang
2009-02-17 14:43 ` Kumar Gala [this message]
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