From 64ec6ccb76e6ef13c40ad68e125545f8807a26c8 Mon Sep 17 00:00:00 2001 From: Romain Perier Date: Fri, 22 Jul 2016 15:46:24 +0200 Subject: [PATCH] crypto: marvell - Update cache with input sg only when it is unmapped So far, the cache of the ahash requests was updated from the 'complete' operation. This complete operation is called from mv_cesa_tdma_process before the cleanup operation, which means that the content of req->src can be read and copied when it is still mapped. This commit fixes the issue by moving this cache update from mv_cesa_ahash_complete to mv_cesa_ahash_req_cleanup, so the copy is done once the sglist is unmapped. Fixes: 1bf6682cb31d ("crypto: marvell - Add a complete operation for..") Signed-off-by: Romain Perier Acked-by: Boris Brezillon Signed-off-by: Herbert Xu --- drivers/crypto/marvell/hash.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/drivers/crypto/marvell/hash.c b/drivers/crypto/marvell/hash.c index c35912b4fffb..82e0f4e6eb1c 100644 --- a/drivers/crypto/marvell/hash.c +++ b/drivers/crypto/marvell/hash.c @@ -315,12 +315,6 @@ static void mv_cesa_ahash_complete(struct crypto_async_request *req) for (i = 0; i < digsize / 4; i++) creq->state[i] = readl_relaxed(engine->regs + CESA_IVDIG(i)); - if (creq->cache_ptr) - sg_pcopy_to_buffer(ahashreq->src, creq->src_nents, - creq->cache, - creq->cache_ptr, - ahashreq->nbytes - creq->cache_ptr); - if (creq->last_req) { /* * Hardware's MD5 digest is in little endian format, but @@ -365,6 +359,12 @@ static void mv_cesa_ahash_req_cleanup(struct crypto_async_request *req) mv_cesa_ahash_last_cleanup(ahashreq); mv_cesa_ahash_cleanup(ahashreq); + + if (creq->cache_ptr) + sg_pcopy_to_buffer(ahashreq->src, creq->src_nents, + creq->cache, + creq->cache_ptr, + ahashreq->nbytes - creq->cache_ptr); } static const struct mv_cesa_req_ops mv_cesa_ahash_req_ops = { -- 2.30.2