[PATCH] crypto: ccp - unmap descriptor before completing cookie

[PATCH] crypto: ccp - unmap descriptor before completing cookie

[Wolfram Sang]

To ensure that buffers are flushed, make sure that the descriptor gets
unmapped before completing the cookie.

Link: https://lore.kernel.org/r/20261009093745.539924-1-vkoul@kernel.org
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
---

Build tested only.

 drivers/crypto/ccp/ccp-dmaengine.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/crypto/ccp/ccp-dmaengine.c b/drivers/crypto/ccp/ccp-dmaengine.c
index b386a7063818..02c6c5fc7db1 100644
--- a/drivers/crypto/ccp/ccp-dmaengine.c
+++ b/drivers/crypto/ccp/ccp-dmaengine.c
@@ -224,8 +224,8 @@ static struct ccp_dma_desc *ccp_handle_active_desc(struct ccp_dma_chan *chan,
 				"%s - tx %d complete, status=%u\n", __func__,
 				desc->tx_desc.cookie, desc->status);
 
-			dma_cookie_complete(tx_desc);
 			dma_descriptor_unmap(tx_desc);
+			dma_cookie_complete(tx_desc);
 		}
 
 		desc = __ccp_next_dma_desc(chan, desc);
-- 
2.53.0

Re: [PATCH] crypto: ccp - unmap descriptor before completing cookie

[Wolfram Sang]

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On Sat, Oct 10, 2026 at 02:50:03PM +0200, Wolfram Sang wrote:
> To ensure that buffers are flushed, make sure that the descriptor gets
> unmapped before completing the cookie.
> 
> Link: https://lore.kernel.org/r/20261009093745.539924-1-vkoul@kernel.org
> Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>

I'd like to drop this patch because Sashiko reported an issue with it
which I am not able to analyze.


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