For function dma_unmap_sg(), the <nents> parameter should be number of
elements in the scatterlist prior to the mapping, not after the mapping.
So fix this usage.
Signed-off-by: NXiang Chen <chenxiang66@hisilicon.com>
Acked-by: NCorentin LABBE <clabbe.montjoie@gmail.com>
Tested-by: NCorentin LABBE <clabbe.montjoie@gmail.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>