X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=crypto%2Fscatterwalk.c;h=47ac90e615f49f1ffd490662a9006d7171e38079;hb=a97c9bf33f4612e2aed6f000f6b1d268b6814f3c;hp=50c9461e8cc6afc03e5497c065ce92bc7653d5c3;hpb=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2;p=linux-2.6

diff --git a/crypto/scatterwalk.c b/crypto/scatterwalk.c
index 50c9461e8c..47ac90e615 100644
--- a/crypto/scatterwalk.c
+++ b/crypto/scatterwalk.c
@@ -100,7 +100,7 @@ void scatterwalk_done(struct scatter_walk *walk, int out, int more)
 int scatterwalk_copychunks(void *buf, struct scatter_walk *walk,
 			   size_t nbytes, int out)
 {
-	do {
+	while (nbytes > walk->len_this_page) {
 		memcpy_dir(buf, walk->data, walk->len_this_page, out);
 		buf += walk->len_this_page;
 		nbytes -= walk->len_this_page;
@@ -108,7 +108,7 @@ int scatterwalk_copychunks(void *buf, struct scatter_walk *walk,
 		scatterwalk_unmap(walk, out);
 		scatterwalk_pagedone(walk, out, 1);
 		scatterwalk_map(walk, out);
-	} while (nbytes > walk->len_this_page);
+	}
 
 	memcpy_dir(buf, walk->data, nbytes, out);
 	return nbytes;