On Wed, Jun 17, 2015 at 09:15:03AM +0200, Boris Brezillon wrote:

Anyway, now I'm doing the following test:

if (creq->src_nents && !ret)
	return -ENOMEM;

Best not call dma_map_sg at all in the !src_nents case as I think
some architectures will WARN or BUG if you give it a zero-length
list.

Cheers,
-- 
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