crypto: atmel-aes - correct usage of dma_sync_* API

The output buffer is used for CPU access, so
the API should be dma_sync_single_for_cpu which
makes the cache line invalid in order to reload
the value in memory.

Signed-off-by: Leilei Zhao <leilei.zhao@atmel.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/drivers/crypto/atmel-aes.c b/drivers/crypto/atmel-aes.c
index fb76066..0f9a9dc 100644 (file)
--- a/drivers/crypto/atmel-aes.c
+++ b/drivers/crypto/atmel-aes.c
@@ -627,7 +627,7 @@ static int atmel_aes_crypt_dma_stop(struct atmel_aes_dev *dd)
                        dma_unmap_sg(dd->dev, dd->out_sg, 1, DMA_FROM_DEVICE);
                        dma_unmap_sg(dd->dev, dd->in_sg, 1, DMA_TO_DEVICE);
                } else {
-                       dma_sync_single_for_device(dd->dev, dd->dma_addr_out,
+                       dma_sync_single_for_cpu(dd->dev, dd->dma_addr_out,
                                dd->dma_size, DMA_FROM_DEVICE);
 
                        /* copy data */