Christoph Lameter said, at 2012/11/10 4:12:
> On Fri, 9 Nov 2012, Shan Wei wrote:
> 
>> v3 fix compile warning:
>> net/xfrm/xfrm_ipcomp.c: In function 'ipcomp_alloc_tfms':
>> net/xfrm/xfrm_ipcomp.c:285: warning: assignment from incompatible pointer 
>> type
> 
> Why exactly is the pointer type not compatible? Looks like we have a
> problem here.
> 

pos->tfms(struct crypto_comp **tfms) is a double pointer that point to struct 
crypto_comp.
returned value is a pointer that point to struct crypto_comp;
So, we need to dereference and then read.

+ tfm = __this_cpu_read(*pos->tfms);

I will update this patch in v4 to fix it.

Thanks~
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