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: 85030c5168f1 ("crypto: marvell - Add support for chaining...")
Signed-off-by: Romain Perier <romain.per...@free-electrons.com>
---
drivers/crypto/marvell/cesa.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/crypto/marvell/cesa.c b/drivers/crypto/marvell/cesa.c
index e373cc6..d64af86 100644
--- a/drivers/crypto/marvell/cesa.c
+++ b/drivers/crypto/marvell/cesa.c
@@ -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)
--
2.8.1
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