--- a/fs/Kconfig
+++ b/fs/Kconfig
@@ -188,6 +188,7 @@ source "fs/sysv/Kconfig"
 source "fs/ufs/Kconfig"
 source "fs/exofs/Kconfig"
 source "fs/nilfs2/Kconfig"
+source "fs/yaffs2/Kconfig"
 
 endif # MISC_FILESYSTEMS
 
--- a/fs/Makefile
+++ b/fs/Makefile
@@ -125,3 +125,4 @@ obj-$(CONFIG_OCFS2_FS)		+= ocfs2/
 obj-$(CONFIG_BTRFS_FS)		+= btrfs/
 obj-$(CONFIG_GFS2_FS)           += gfs2/
 obj-$(CONFIG_EXOFS_FS)          += exofs/
+obj-$(CONFIG_YAFFS_FS)		+= yaffs2/