diff --git a/[refs] b/[refs]
index 0c44f0ecbfeb..4d2bd55b27da 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 4d0fe50c75a547088e4304e5eb5f521514dfae46
+refs/heads/master: 685f94e6db8496399c881218018166515445a914
diff --git a/trunk/net/ipv4/igmp.c b/trunk/net/ipv4/igmp.c
index c7472eff2d51..b2ca095cb9da 100644
--- a/trunk/net/ipv4/igmp.c
+++ b/trunk/net/ipv4/igmp.c
@@ -1716,7 +1716,8 @@ static int ip_mc_add_src(struct in_device *in_dev, __be32 *pmca, int sfmode,
 	if (err) {
 		int j;
 
-		pmc->sfcount[sfmode]--;
+		if (!delta)
+			pmc->sfcount[sfmode]--;
 		for (j=0; j<i; j++)
 			(void) ip_mc_del1_src(pmc, sfmode, &psfsrc[j]);
 	} else if (isexclude != (pmc->sfcount[MCAST_EXCLUDE] != 0)) {