[PATCH v6 1/2] ARM: dma-mapping: Don't use outer_flush_range when the L2C is coherent

[Gregory CLEMENT]

Hi Russell King,
 
 On jeu., avril 07 2016, Russell King - ARM Linux <linux at arm.linux.org.uk> wrote:

> On Thu, Mar 31, 2016 at 11:09:39AM +0200, Gregory CLEMENT wrote:
>> diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
>> index deac58d5f1f7..1538bb293e90 100644
>> --- a/arch/arm/mm/dma-mapping.c
>> +++ b/arch/arm/mm/dma-mapping.c
>> @@ -61,7 +61,7 @@ struct arm_dma_free_args {
>>  
>>  struct arm_dma_allocator {
>>  	void *(*alloc)(struct arm_dma_alloc_args *args,
>> -		       struct page **ret_page);
>> +		       struct page **ret_page, bool is_coherent);
>
> This should be named "l2_coherent" because it controls whether L2
> cache flushing is done: L1 cache flushing calls are still present.

I've just sent a new version taking into account your remark.

Thanks,

Gregory

>
> -- 
> RMK's Patch system: http://www.arm.linux.org.uk/developer/patches/
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-- 
Gregory Clement, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com