X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=crypto%2Fscatterwalk.c;h=9aeeb52004a5399d0a9b7a3484044b5de1e3083c;hb=e242297055f906e8e225fb95a8edbc88e9052634;hp=297e19d13c4e6c34dd52688158266a1b502be518;hpb=b2ab4a57b018aafbba35bff088218f5cc3d2142e;p=linux-2.6

diff --git a/crypto/scatterwalk.c b/crypto/scatterwalk.c
index 297e19d13c..9aeeb52004 100644
--- a/crypto/scatterwalk.c
+++ b/crypto/scatterwalk.c
@@ -105,6 +105,9 @@ void scatterwalk_map_and_copy(void *buf, struct scatterlist *sg,
 	struct scatter_walk walk;
 	unsigned int offset = 0;
 
+	if (!nbytes)
+		return;
+
 	for (;;) {
 		scatterwalk_start(&walk, sg);