virtio-net: fix build error when CONFIG_AVERAGE is not enabled

Commit ab7db91705e9 ("virtio-net: auto-tune mergeable rx buffer size for
improved performance") introduced a virtio-net dependency on EWMA.
The inclusion of EWMA is controlled by CONFIG_AVERAGE. Fix build error
when CONFIG_AVERAGE is not enabled by adding select AVERAGE to
virtio-net's Kconfig entry.

Build failure reported using config make ARCH=s390 defconfig.

Signed-off-by: Michael Dalton <mwdalton@google.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
index b45b240889f5049db48f0d90e4d7146b57985b8e..f342278539d50cfb58b0cfea45894bb1c63babd2 100644 (file)
--- a/drivers/net/Kconfig
+++ b/drivers/net/Kconfig
@@ -236,6 +236,7 @@ config VETH
 config VIRTIO_NET
        tristate "Virtio network driver"
        depends on VIRTIO
+       select AVERAGE
        ---help---
          This is the virtual network driver for virtio.  It can be used with
          lguest or QEMU based VMMs (like KVM or Xen).  Say Y or M.