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

[Eric Biggers]

From: Eric Biggers <ebigg...@google.com>

All callers pass chain=0 to scatterwalk_crypto_chain().

Remove this unneeded parameter.

Signed-off-by: Eric Biggers <ebigg...@google.com>
---
 crypto/lrw.c                  | 4 ++--
 crypto/scatterwalk.c          | 2 +-
 crypto/xts.c                  | 4 ++--
 include/crypto/scatterwalk.h  | 8 +-------
 net/tls/tls_device_fallback.c | 2 +-
 5 files changed, 7 insertions(+), 13 deletions(-)

diff --git a/crypto/lrw.c b/crypto/lrw.c
index 954a7064a179..393a782679c7 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 c16c94f88733..d0b92c1cd6e9 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 12284183bd20..ccf55fbb8bc2 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 880e6be9e95e..eac72840a7d2 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 748914abdb60..4e1ec12bc0fb 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,
-- 
2.18.0.233.g985f88cf7e-goog