query_protocol() was added in commit 6b90a6d66b17 ("IB/Verbs: Implement new callback query_protocol()") and then removed in commit f9b22e355d38 ("IB/core: Convert core to use bitfield for caps"). This left behind an unused prototype. Signed-off-by: Nelson Escobar <neescoba@cisco.com> Reviewed-by: Dave Goodell <dgoodell@cisco.com> Signed-off-by: Doug Ledford <dledford@redhat.com>