--- a/fs/Kconfig
+++ b/fs/Kconfig
@@ -35,6 +35,7 @@ source "fs/gfs2/Kconfig"
 source "fs/ocfs2/Kconfig"
 source "fs/btrfs/Kconfig"
 source "fs/nilfs2/Kconfig"
+source "fs/yaffs2/Kconfig"
 
 endif # BLOCK
 
--- a/fs/Makefile
+++ b/fs/Makefile
@@ -125,3 +125,5 @@ obj-$(CONFIG_GFS2_FS)           += gfs2/
 obj-y				+= exofs/ # Multiple modules
 obj-$(CONFIG_CEPH_FS)		+= ceph/
 obj-$(CONFIG_PSTORE)		+= pstore/
+obj-$(CONFIG_YAFFS_FS)		+= yaffs2/
+