Hi Herbert.
On Thu, Feb 21, 2008 at 10:10:13PM +0800, Herbert Xu (herbert@xxxxxxxxxxxxxxxxxxx) wrote:
> Yes by the time the request gets to hifn req->nbytes would have
> been decremented by 12 bytes which means that it is now the exact
> amount of data that needs to be encrypted.
>
> However, if you follow the scatterlist then you will see more data
> available which is normal.
Argh, I see.
Then following patch should help.
Signed-off-by: Evgeniy Polyakov <johnpol@xxxxxxxxxxx>
diff --git a/drivers/crypto/hifn_795x.c b/drivers/crypto/hifn_795x.c
index dfbf24c..81b8f2f 100644
--- a/drivers/crypto/hifn_795x.c
+++ b/drivers/crypto/hifn_795x.c
@@ -1544,7 +1544,10 @@ static int ablkcipher_walk(struct ablkcipher_request *req,
kunmap_atomic(daddr, KM_SOFTIRQ0);
} else {
- nbytes -= src->length;
+ if (src->length > nbytes)
+ nbytes = 0;
+ else
+ nbytes -= src->length;
idx++;
}
--
Evgeniy Polyakov
-
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