[ 072/127] crypto: caam - fix inconsistent assoc dma mapping direction

From: Greg Kroah-Hartman
Date: Wed Jun 05 2013 - 17:52:20 EST


3.9-stable review patch. If anyone has any objections, please let me know.

------------------

From: Horia Geanta <horia.geanta@xxxxxxxxxxxxx>

commit 286233e604d79f0c7fa04abec2180d5d89a74749 upstream.

req->assoc is dma mapped BIDIRECTIONAL and unmapped TO_DEVICE.
Since it is read-only for the device, use TO_DEVICE both for mapping
and unmapping.

Signed-off-by: Horia Geanta <horia.geanta@xxxxxxxxxxxxx>
Signed-off-by: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
drivers/crypto/caam/caamalg.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/crypto/caam/caamalg.c
+++ b/drivers/crypto/caam/caamalg.c
@@ -1154,7 +1154,7 @@ static struct aead_edesc *aead_edesc_all
dst_nents = sg_count(req->dst, req->cryptlen, &dst_chained);

sgc = dma_map_sg_chained(jrdev, req->assoc, assoc_nents ? : 1,
- DMA_BIDIRECTIONAL, assoc_chained);
+ DMA_TO_DEVICE, assoc_chained);
if (likely(req->src == req->dst)) {
sgc = dma_map_sg_chained(jrdev, req->src, src_nents ? : 1,
DMA_BIDIRECTIONAL, src_chained);
@@ -1336,7 +1336,7 @@ static struct aead_edesc *aead_giv_edesc
dst_nents = sg_count(req->dst, req->cryptlen, &dst_chained);

sgc = dma_map_sg_chained(jrdev, req->assoc, assoc_nents ? : 1,
- DMA_BIDIRECTIONAL, assoc_chained);
+ DMA_TO_DEVICE, assoc_chained);
if (likely(req->src == req->dst)) {
sgc = dma_map_sg_chained(jrdev, req->src, src_nents ? : 1,
DMA_BIDIRECTIONAL, src_chained);


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