From: Corentin Labbe clabbe@baylibre.com
stable inclusion from linux-4.19.198 commit 70bc9a0178b346d331f97ac6694f672aaa8862a5
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[ Upstream commit 9395c58fdddd79cdd3882132cdd04e8ac7ad525f ]
Testing ixp4xx_crypto with CONFIG_DMA_API_DEBUG lead to the following error: DMA-API: platform ixp4xx_crypto.0: device driver tries to free DMA memory it has not allocated [device address=0x0000000000000000] [size=24 bytes]
This is due to dma_unmap using the wrong address.
Fixes: 0d44dc59b2b4 ("crypto: ixp4xx - Fix handling of chained sg buffers") Signed-off-by: Corentin Labbe clabbe@baylibre.com Signed-off-by: Herbert Xu herbert@gondor.apana.org.au Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- drivers/crypto/ixp4xx_crypto.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/crypto/ixp4xx_crypto.c b/drivers/crypto/ixp4xx_crypto.c index 9b7b8558db31d..abb84996f2ca4 100644 --- a/drivers/crypto/ixp4xx_crypto.c +++ b/drivers/crypto/ixp4xx_crypto.c @@ -332,7 +332,7 @@ static void free_buf_chain(struct device *dev, struct buffer_desc *buf,u32 phys)
buf1 = buf->next; phys1 = buf->phys_next; - dma_unmap_single(dev, buf->phys_next, buf->buf_len, buf->dir); + dma_unmap_single(dev, buf->phys_addr, buf->buf_len, buf->dir); dma_pool_free(buffer_pool, buf, phys); buf = buf1; phys = phys1;