Re: [PATCH 12/18] soc: qcom: ipa: immediate commands

[Alex Elder]

On 5/20/19 9:50 AM, Arnd Bergmann wrote:
> Ok, that sounds reasonable, yes. I'm not sure if
> dma_alloc_coherent() guarantees zero-initialization
> though, so if that is required, you may have to
> add a memset().
I had dma_zalloc_coherent() originally but I think
Christoph Hellwig posted something recently that
removed that function, because dma_alloc_coherent()
always zeroes the underlying memory.

+Christoph, who might be able to explain or confirm

					-Alex