tree ae35138a3ce41c356e893589cce3720a6ee0bc5c
parent ef94b1d834aace7101de77c3a7c2631b9ae9c5f6
author Ruchika Gupta <ruchika.gupta@freescale.com> 1403533226 +0530
committer Herbert Xu <herbert@gondor.apana.org.au> 1403703521 +0800

crypto: caam - Correct the dma mapping for sg table

At few places in caamhash and caamalg, after allocating a dmable
buffer for sg table , the buffer was being modified.  As per
definition of DMA_FROM_DEVICE ,afer allocation the memory should
be treated as read-only by the driver. This patch shifts the
allocation of dmable buffer for sg table after it is populated
by the  driver, making it read-only as per the DMA API's requirement.

Signed-off-by: Ruchika Gupta <ruchika.gupta@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>