Fix dma unmap direction in iMX sahara aes calculation
From: Mogens Lauridsen <hidden>
Date: 2017-07-16 21:21:05
Subsystem:
crypto api, the rest · Maintainers:
Herbert Xu, "David S. Miller", Linus Torvalds
Hi, The direction used in dma_unmap_sg in aes calc in sahara.c is wrong. This result in the cache not being invalidated correct when aes calculation is done and result is dma'ed to memory. This is seen as sporadic wrong result from aes calc. Thanks, Mogens Signed-off-by: Mogens Lauridsen <redacted>
diff --git a/drivers/crypto/sahara.c b/drivers/crypto/sahara.c
index 1d9ecd3..9538c52 100644ae
--- a/drivers/crypto/sahara.c
+++ b/drivers/crypto/sahara.c@@ -543,10 +543,10 @@ static int sahara_hw_descriptor_create(struct sahara_dev * unmap_out: dma_unmap_sg(dev->device, dev->out_sg, dev->nb_out_sg, - DMA_TO_DEVICE); + DMA_FROM_DEVICE); unmap_in: dma_unmap_sg(dev->device, dev->in_sg, dev->nb_in_sg, - DMA_FROM_DEVICE); + DMA_TO_DEVICE); return -EINVAL; }
@@ -594,9 +594,9 @@ static int sahara_aes_process(struct ablkcipher_request *req } dma_unmap_sg(dev->device, dev->out_sg, dev->nb_out_sg, - DMA_TO_DEVICE); - dma_unmap_sg(dev->device, dev->in_sg, dev->nb_in_sg, DMA_FROM_DEVICE); + dma_unmap_sg(dev->device, dev->in_sg, dev->nb_in_sg, + DMA_TO_DEVICE); return 0; }