Messages in this thread Patch in this message | | | From | Leilei Zhao <> | Subject | [PATCH 10/10] crypto: atmel-aes: correct usage of dma_sync_* API | Date | Tue, 7 Apr 2015 17:45:11 +0800 |
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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> --- drivers/crypto/atmel-aes.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/crypto/atmel-aes.c b/drivers/crypto/atmel-aes.c index 9bd3437..aa84623 100644 --- 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 */ -- 1.7.9.5
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