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

Kumar Gala galak at kernel.crashing.org
Fri Feb 20 03:41:40 EST 2009


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

>
> From: Da Yu <dayu at datangmobile.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 at datangmobile.cn>
> ---


applied to next

- k



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