[PATCH 5/7] mtd: provide helper to prepare buffers for DMA operations

Boris Brezillon boris.brezillon at free-electrons.com
Tue Mar 8 06:46:20 PST 2016

On Tue, 8 Mar 2016 19:48:53 +0530
Vinod Koul <vinod.koul at intel.com> wrote:

> On Tue, Mar 08, 2016 at 12:15:13PM +0100, Boris Brezillon wrote:
> >  
> > +#ifdef CONFIG_HAS_DMA
> Shouldn't this be CONFIG_DMA_ENGINE as you are preparing these descriptors
> for DMA transfer?

Nope, scatterlist users are not necessarily using a dmaengine, some IPs
are directly embedding a dedicated DMA engine, which has no driver in

Boris Brezillon, Free Electrons
Embedded Linux and Kernel engineering

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