[CRYPTO] api: Use the right value when advancing scatterwalk_copychunks

In the scatterwalk_copychunks loop, We should be advancing by
len_this_page and not nbytes.  The latter is the total length.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/crypto/scatterwalk.c b/crypto/scatterwalk.c
index a664231..0f76175 100644 (file)
--- a/crypto/scatterwalk.c
+++ b/crypto/scatterwalk.c
@@ -91,7 +91,7 @@ void scatterwalk_copychunks(void *buf, struct scatter_walk *walk,
                memcpy_dir(buf, vaddr, len_this_page, out);
                scatterwalk_unmap(vaddr, out);
 
-               scatterwalk_advance(walk, nbytes);
+               scatterwalk_advance(walk, len_this_page);
 
                if (nbytes == len_this_page)
                        break;