../net/ethtool/netlink.c:815:12: warning: ‘ethnl_perphy_done’ defined but not used [-Wunused-function]
  815 | static int ethnl_perphy_done(struct netlink_callback *cb)
      |            ^~~~~~~~~~~~~~~~~
../net/ethtool/netlink.c:791:12: warning: ‘ethnl_perphy_dumpit’ defined but not used [-Wunused-function]
  791 | static int ethnl_perphy_dumpit(struct sk_buff *skb,
      |            ^~~~~~~~~~~~~~~~~~~
../net/ethtool/netlink.c:681:12: warning: ‘ethnl_perphy_start’ defined but not used [-Wunused-function]
  681 | static int ethnl_perphy_start(struct netlink_callback *cb)
      |            ^~~~~~~~~~~~~~~~~~
../arch/x86/boot/version.c:18:12: warning: symbol 'kernel_version' was not declared. Should it be static?
../arch/x86/boot/version.c:18:12: warning: symbol 'kernel_version' was not declared. Should it be static?