[PATCH 3.4 047/107] crypto: ixp4xx - Remove bogus BUG_ON on scattered dst buffer

lizf
2016-03-16T08:33:27Z

From: Herbert Xu <herbert@gondor.apana.org.au>

3.4.111-rc1 review patch. If anyone has any objections, please let me know.

------------------

commit f898c522f0e9ac9f3177d0762b76e2ab2d2cf9c0 upstream.

This patch removes a bogus BUG_ON in the ablkcipher path that
triggers when the destination buffer is different from the source
buffer and is scattered.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Zefan Li <lizefan@huawei.com>
---
drivers/crypto/ixp4xx_crypto.c | 1 -
1 file changed, 1 deletion(-)

diff --git a/drivers/crypto/ixp4xx_crypto.c b/drivers/crypto/ixp4xx_crypto.c
index 8f3f74c..f731abc 100644
--- a/drivers/crypto/ixp4xx_crypto.c
+++ b/drivers/crypto/ixp4xx_crypto.c
@@ -915,7 +915,6 @@ static int ablk_perform(struct ablkcipher_request *req, int encrypt)
crypt->mode |= NPE_OP_NOT_IN_PLACE;
/* This was never tested by Intel
* for more than one dst buffer, I think. */
- BUG_ON(req->dst->length < nbytes);
req_ctx->dst = NULL;
if (!chainup_buffers(dev, req->dst, nbytes, &dst_hook,
flags, DMA_FROM_DEVICE))
--
1.9.1