diff --git a/openpower/configs/linux/skiroot_defconfig b/openpower/configs/linux/skiroot_defconfig
index 92607da..7247e97 100644
--- a/openpower/configs/linux/skiroot_defconfig
+++ b/openpower/configs/linux/skiroot_defconfig
@@ -118,28 +118,28 @@
 CONFIG_DM_MIRROR=m
 CONFIG_DM_ZERO=m
 CONFIG_DM_MULTIPATH=m
-CONFIG_NETCONSOLE=y
-CONFIG_TUN=y
-CONFIG_VIRTIO_NET=y
-CONFIG_VORTEX=y
-CONFIG_ACENIC=y
+CONFIG_NETCONSOLE=m
+CONFIG_TUN=m
+CONFIG_VIRTIO_NET=m
+CONFIG_VORTEX=m
+CONFIG_ACENIC=m
 CONFIG_ACENIC_OMIT_TIGON_I=y
-CONFIG_PCNET32=y
+CONFIG_PCNET32=m
 CONFIG_TIGON3=y
-CONFIG_BNX2X=y
+CONFIG_BNX2X=m
 CONFIG_CHELSIO_T1=y
-CONFIG_BE2NET=y
-CONFIG_S2IO=y
-CONFIG_E100=y
-CONFIG_E1000=y
-CONFIG_E1000E=y
-CONFIG_IXGB=y
-CONFIG_IXGBE=y
-CONFIG_MLX4_EN=y
-CONFIG_MYRI10GE=y
-CONFIG_QLGE=y
-CONFIG_NETXEN_NIC=y
-CONFIG_SFC=y
+CONFIG_BE2NET=m
+CONFIG_S2IO=m
+CONFIG_E100=m
+CONFIG_E1000=m
+CONFIG_E1000E=m
+CONFIG_IXGB=m
+CONFIG_IXGBE=m
+CONFIG_MLX4_EN=m
+CONFIG_MYRI10GE=m
+CONFIG_QLGE=m
+CONFIG_NETXEN_NIC=m
+CONFIG_SFC=m
 # CONFIG_WLAN is not set
 # CONFIG_INPUT_MOUSEDEV_PSAUX is not set
 CONFIG_INPUT_EVDEV=y
@@ -209,6 +209,7 @@
 CONFIG_NLS_UTF8=y
 CONFIG_CRC16=y
 CONFIG_CRC_ITU_T=y
+CONFIG_LIBCRC32C=y
 CONFIG_PRINTK_TIME=y
 CONFIG_DEBUG_FS=y
 CONFIG_MAGIC_SYSRQ=y