From: Eric Biggers <ebiggers@google.com>
Date: Mon, 23 Jul 2018 17:01:33 +0000 (-0700)
Subject: crypto: scatterwalk - remove 'chain' argument from scatterwalk_crypto_chain()
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=8c30fbe63e4eff1b221f8db70ae5c48a9331eae0;p=linux.git

crypto: scatterwalk - remove 'chain' argument from scatterwalk_crypto_chain()

All callers pass chain=0 to scatterwalk_crypto_chain().

Remove this unneeded parameter.

Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
---

diff --git a/crypto/lrw.c b/crypto/lrw.c
index 954a7064a179d..393a782679c78 100644
--- a/crypto/lrw.c
+++ b/crypto/lrw.c
@@ -188,7 +188,7 @@ static int post_crypt(struct skcipher_request *req)
 	if (rctx->dst != sg) {
 		rctx->dst[0] = *sg;
 		sg_unmark_end(rctx->dst);
-		scatterwalk_crypto_chain(rctx->dst, sg_next(sg), 0, 2);
+		scatterwalk_crypto_chain(rctx->dst, sg_next(sg), 2);
 	}
 	rctx->dst[0].length -= offset - sg->offset;
 	rctx->dst[0].offset = offset;
@@ -265,7 +265,7 @@ static int pre_crypt(struct skcipher_request *req)
 	if (rctx->src != sg) {
 		rctx->src[0] = *sg;
 		sg_unmark_end(rctx->src);
-		scatterwalk_crypto_chain(rctx->src, sg_next(sg), 0, 2);
+		scatterwalk_crypto_chain(rctx->src, sg_next(sg), 2);
 	}
 	rctx->src[0].length -= offset - sg->offset;
 	rctx->src[0].offset = offset;
diff --git a/crypto/scatterwalk.c b/crypto/scatterwalk.c
index c16c94f88733e..d0b92c1cd6e9b 100644
--- a/crypto/scatterwalk.c
+++ b/crypto/scatterwalk.c
@@ -91,7 +91,7 @@ struct scatterlist *scatterwalk_ffwd(struct scatterlist dst[2],
 
 	sg_init_table(dst, 2);
 	sg_set_page(dst, sg_page(src), src->length - len, src->offset + len);
-	scatterwalk_crypto_chain(dst, sg_next(src), 0, 2);
+	scatterwalk_crypto_chain(dst, sg_next(src), 2);
 
 	return dst;
 }
diff --git a/crypto/xts.c b/crypto/xts.c
index 12284183bd20a..ccf55fbb8bc2d 100644
--- a/crypto/xts.c
+++ b/crypto/xts.c
@@ -138,7 +138,7 @@ static int post_crypt(struct skcipher_request *req)
 	if (rctx->dst != sg) {
 		rctx->dst[0] = *sg;
 		sg_unmark_end(rctx->dst);
-		scatterwalk_crypto_chain(rctx->dst, sg_next(sg), 0, 2);
+		scatterwalk_crypto_chain(rctx->dst, sg_next(sg), 2);
 	}
 	rctx->dst[0].length -= offset - sg->offset;
 	rctx->dst[0].offset = offset;
@@ -204,7 +204,7 @@ static int pre_crypt(struct skcipher_request *req)
 	if (rctx->src != sg) {
 		rctx->src[0] = *sg;
 		sg_unmark_end(rctx->src);
-		scatterwalk_crypto_chain(rctx->src, sg_next(sg), 0, 2);
+		scatterwalk_crypto_chain(rctx->src, sg_next(sg), 2);
 	}
 	rctx->src[0].length -= offset - sg->offset;
 	rctx->src[0].offset = offset;
diff --git a/include/crypto/scatterwalk.h b/include/crypto/scatterwalk.h
index 880e6be9e95e1..eac72840a7d2e 100644
--- a/include/crypto/scatterwalk.h
+++ b/include/crypto/scatterwalk.h
@@ -22,14 +22,8 @@
 #include <linux/scatterlist.h>
 
 static inline void scatterwalk_crypto_chain(struct scatterlist *head,
-					    struct scatterlist *sg,
-					    int chain, int num)
+					    struct scatterlist *sg, int num)
 {
-	if (chain) {
-		head->length += sg->length;
-		sg = sg_next(sg);
-	}
-
 	if (sg)
 		sg_chain(head, num, sg);
 	else
diff --git a/net/tls/tls_device_fallback.c b/net/tls/tls_device_fallback.c
index 748914abdb604..4e1ec12bc0fb3 100644
--- a/net/tls/tls_device_fallback.c
+++ b/net/tls/tls_device_fallback.c
@@ -42,7 +42,7 @@ static void chain_to_walk(struct scatterlist *sg, struct scatter_walk *walk)
 	sg_set_page(sg, sg_page(src),
 		    src->length - diff, walk->offset);
 
-	scatterwalk_crypto_chain(sg, sg_next(src), 0, 2);
+	scatterwalk_crypto_chain(sg, sg_next(src), 2);
 }
 
 static int tls_enc_record(struct aead_request *aead_req,