[PATCH 1/2] crypto: caam: map DMA buffers before sync

[Rouven Czerwinski <r.czerwinski@pengutronix.de>]

With dma api debugging enabled, Barebox complains correctly that the
result and desc buffer are never mapped correctly. Add the correct map
and unmap sequence.

Signed-off-by: Rouven Czerwinski <r.czerwinski@pengutronix.de>
---
 drivers/crypto/caam/rng_self_test.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/crypto/caam/rng_self_test.c b/drivers/crypto/caam/rng_self_test.c
index b6fcc3bc09..f5ab974a98 100644
--- a/drivers/crypto/caam/rng_self_test.c
+++ b/drivers/crypto/caam/rng_self_test.c
@@ -186,6 +186,8 @@ int caam_rng_self_test(struct device *dev, const u8 caam_era, const u8 rngvid,
 
 	construct_rng_self_test_jobdesc(desc, rng_st_dsc, result, desc_size);
 
+	dma_map_single(dev, desc, desc_size * sizeof(*desc), DMA_TO_DEVICE);
+	dma_map_single(dev, result, result_size * sizeof(*result), DMA_FROM_DEVICE);
 	dma_sync_single_for_device(dev, (unsigned long)desc,
 			desc_size * sizeof(*desc), DMA_TO_DEVICE);
 	dma_sync_single_for_device(dev, (unsigned long)result,
@@ -218,6 +220,8 @@ int caam_rng_self_test(struct device *dev, const u8 caam_era, const u8 rngvid,
 	ret = 0;
 
 err:
+	dma_unmap_single(dev, (dma_addr_t)desc, desc_size * sizeof(*desc), DMA_TO_DEVICE);
+	dma_unmap_single(dev, (dma_addr_t)result, result_size * sizeof(*result), DMA_FROM_DEVICE);
 	dma_free(desc);
 	dma_free(result);
 	return ret;
-- 
2.39.2