From: Salvatore Benedetto <salvatore.benedetto@intel.com>
Date: Thu, 7 Jul 2016 14:52:17 +0000 (+0100)
Subject: crypto: qat - Stop dropping leading zeros from RSA output
X-Git-Tag: v4.8-rc1~165^2~37
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=bd76ad4abfdccd26a9ac11214aa715e83bc8e808;p=karo-tx-linux.git

crypto: qat - Stop dropping leading zeros from RSA output

There is not need to drop leading zeros from the RSA output
operations results.

Signed-off-by: Salvatore Benedetto <salvatore.benedetto@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
---

diff --git a/drivers/crypto/qat/qat_common/qat_asym_algs.c b/drivers/crypto/qat/qat_common/qat_asym_algs.c
index 3d56fb82f48a..0d35dca2e925 100644
--- a/drivers/crypto/qat/qat_common/qat_asym_algs.c
+++ b/drivers/crypto/qat/qat_common/qat_asym_algs.c
@@ -571,32 +571,12 @@ static void qat_rsa_cb(struct icp_qat_fw_pke_resp *resp)
 
 	areq->dst_len = req->ctx.rsa->key_sz;
 	if (req->dst_align) {
-		char *ptr = req->dst_align;
-
-		while (!(*ptr) && areq->dst_len) {
-			areq->dst_len--;
-			ptr++;
-		}
-
-		if (areq->dst_len != req->ctx.rsa->key_sz)
-			memmove(req->dst_align, ptr, areq->dst_len);
-
 		scatterwalk_map_and_copy(req->dst_align, areq->dst, 0,
 					 areq->dst_len, 1);
 
 		dma_free_coherent(dev, req->ctx.rsa->key_sz, req->dst_align,
 				  req->out.rsa.enc.c);
 	} else {
-		char *ptr = sg_virt(areq->dst);
-
-		while (!(*ptr) && areq->dst_len) {
-			areq->dst_len--;
-			ptr++;
-		}
-
-		if (sg_virt(areq->dst) != ptr && areq->dst_len)
-			memmove(sg_virt(areq->dst), ptr, areq->dst_len);
-
 		dma_unmap_single(dev, req->out.rsa.enc.c, req->ctx.rsa->key_sz,
 				 DMA_FROM_DEVICE);
 	}