On Tue, Dec 10, 2013 at 08:26:19PM +0100, Marek Vasut wrote:
> When finishing the ahash request, the ahash_op_unaligned_done() will
> call complete() on the request. Yet, this will not call the correct
> complete callback. The correct complete callback was previously stored
> in the requests' private data, as seen in ahash_op_unaligned(). This
> patch restores the correct complete callback and .data field of the
> request before calling complete() on it.
> 
> Signed-off-by: Marek Vasut <[email protected]>
> Cc: Herbert Xu <[email protected]>
> Cc: David S. Miller <[email protected]>
> Cc: Fabio Estevam <[email protected]>
> Cc: Shawn Guo <[email protected]>
> Cc: [email protected]
> ---
>  crypto/ahash.c | 5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)
> 
> diff --git a/crypto/ahash.c b/crypto/ahash.c
> index 793a27f..a92dc38 100644
> --- a/crypto/ahash.c
> +++ b/crypto/ahash.c
> @@ -213,7 +213,10 @@ static void ahash_op_unaligned_done(struct 
> crypto_async_request *req, int err)
>  
>       ahash_op_unaligned_finish(areq, err);
>  
> -     complete(data, err);
> +     areq->base.complete = complete;
> +     areq->base.data = data;
> +
> +     complete(&areq->base, err);

This looks completely bogus.  While restoring areq isn't wrong per
se, calling complete with &areq->base makes no sense.  The original
completion data is in the variable "data".

Which driver relies on this behaviour?

Also, does your subsequent patches rely on this?

Cheers,
-- 
Email: Herbert Xu <[email protected]>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
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