From: Christian Lamparter <chunkeey@gmail.com>
Date: Mon, 22 Apr 2019 11:26:01 +0000 (+0200)
Subject: crypto: crypto4xx - get rid of redundant using_sd variable
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=38cf5533d7a876f75088bacc1277046f30005f28;p=openwrt%2Fstaging%2Fblogic.git

crypto: crypto4xx - get rid of redundant using_sd variable

using_sd is used as a stand-in for sa_command_0.bf.scatter
that we need to set anyway, so we might as well just prevent
double-accounting.

Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
---

diff --git a/drivers/crypto/amcc/crypto4xx_core.c b/drivers/crypto/amcc/crypto4xx_core.c
index 3e7d24ff3fa6..3934c2523762 100644
--- a/drivers/crypto/amcc/crypto4xx_core.c
+++ b/drivers/crypto/amcc/crypto4xx_core.c
@@ -539,7 +539,7 @@ static void crypto4xx_cipher_done(struct crypto4xx_device *dev,
 
 	req = skcipher_request_cast(pd_uinfo->async_req);
 
-	if (pd_uinfo->using_sd) {
+	if (pd_uinfo->sa_va->sa_command_0.bf.scatter) {
 		crypto4xx_copy_pkt_to_dst(dev, pd, pd_uinfo,
 					  req->cryptlen, req->dst);
 	} else {
@@ -593,7 +593,7 @@ static void crypto4xx_aead_done(struct crypto4xx_device *dev,
 	u32 icv[AES_BLOCK_SIZE];
 	int err = 0;
 
-	if (pd_uinfo->using_sd) {
+	if (pd_uinfo->sa_va->sa_command_0.bf.scatter) {
 		crypto4xx_copy_pkt_to_dst(dev, pd, pd_uinfo,
 					  pd->pd_ctl_len.bf.pkt_len,
 					  dst);
@@ -887,7 +887,6 @@ int crypto4xx_build_pd(struct crypto_async_request *req,
 		 * we know application give us dst a whole piece of memory
 		 * no need to use scatter ring.
 		 */
-		pd_uinfo->using_sd = 0;
 		pd_uinfo->first_sd = 0xffffffff;
 		sa->sa_command_0.bf.scatter = 0;
 		pd->dest = (u32)dma_map_page(dev->core_dev->device,
@@ -901,7 +900,6 @@ int crypto4xx_build_pd(struct crypto_async_request *req,
 		u32 sd_idx = fst_sd;
 		nbytes = datalen;
 		sa->sa_command_0.bf.scatter = 1;
-		pd_uinfo->using_sd = 1;
 		pd_uinfo->first_sd = fst_sd;
 		sd = crypto4xx_get_sdp(dev, &sd_dma, sd_idx);
 		pd->dest = sd_dma;
diff --git a/drivers/crypto/amcc/crypto4xx_core.h b/drivers/crypto/amcc/crypto4xx_core.h
index 4ecc34fa8ebd..c624f8cd3d2e 100644
--- a/drivers/crypto/amcc/crypto4xx_core.h
+++ b/drivers/crypto/amcc/crypto4xx_core.h
@@ -64,7 +64,6 @@ union shadow_sa_buf {
 struct pd_uinfo {
 	struct crypto4xx_device *dev;
 	u32   state;
-	u32 using_sd;
 	u32 first_gd;		/* first gather discriptor
 				used by this packet */
 	u32 num_gd;             /* number of gather discriptor