linux-kernel - Re: [PATCH] fix the interrupt loss problem on powerpc IPIC(2.6.25-2.6.28)

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Message-Id: <D3F7F9FD-94AD-4FA0-9FDF-DFF92487E5DE@kernel.crashing.org>
Date:	Thu, 19 Feb 2009 10:41:40 -0600
From:	Kumar Gala <galak@...nel.crashing.org>
To:	"<dayu@...angmobile.cn>" <dayu@...angmobile.cn>
Cc:	<olof@...om.net>, <leoli@...escale.com>, <linuxppc-dev@...abs.org>,
	<linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] fix the interrupt loss problem on powerpc IPIC(2.6.25-2.6.28)


On Feb 17, 2009, at 11:47 PM, <dayu@...angmobile.cn> <dayu@...angmobile.cn 
 > wrote:

>
> From: Da Yu <dayu@...angmobile.cn>
> Date: Wed, 18 Feb 2009 19:58:20 +0800
> Subject: [PATCH] fix the interrupt loss problem on powerpc IPIC  
> (2.6.25-2.6.28)
>
> Description: The interrupt pending register is write 1 clear.  If  
> there are more than one external interrupts pending at the same  
> time, acking the first interrupt by reading pending register then OR  
> the corresponding bit and write back to pending register will also  
> clear other interrupt pending bits.  That will cause loss of  
> interrupt.
>
> Signed-off-by: Da Yu <dayu@...angmobile.cn>
> ---


applied to next

- k
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