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crypto: marvell - Don't chain at DMA level when backlog is disabled 

The flag CRYPTO_TFM_REQ_MAY_BACKLOG is optional and can be set from the
user to put requests into the backlog queue when the main cryptographic
queue is full. Before calling mv_cesa_tdma_chain we must check the value
of the return status to be sure that the current request has been
correctly queued or added to the backlog.

Fixes: 85030c5168 ("crypto: marvell - Add support for chaining...")
Signed-off-by: Romain Perier <romain.perier@free-electrons.com>
Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Romain Perier 2016-07-22 14:40:55 +02:00 committed by Herbert Xu
parent ec38f82e85
commit 603e989ebe
1 changed files with 4 additions and 3 deletions
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7
drivers/crypto/marvell/cesa.c
View File

@ -180,10 +180,11 @@ int mv_cesa_queue_req(struct crypto_async_request *req,
struct mv_cesa_engine *engine = creq->engine;
spin_lock_bh(&engine->lock);
if (mv_cesa_req_get_type(creq) == CESA_DMA_REQ)
mv_cesa_tdma_chain(engine, creq);
ret = crypto_enqueue_request(&engine->queue, req);
if ((mv_cesa_req_get_type(creq) == CESA_DMA_REQ) &&
(ret == -EINPROGRESS ||
(ret == -EBUSY && req->flags & CRYPTO_TFM_REQ_MAY_BACKLOG)))
mv_cesa_tdma_chain(engine, creq);
spin_unlock_bh(&engine->lock);
if (ret != -EINPROGRESS)