kvm: remove dead code

The function kvm_io_bus_read_cookie is defined but never used
in current in-tree code.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

1 files changed, 0 insertions, 27 deletions

diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index e7c6ddd8ecc0..b28579e84248 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -2934,33 +2934,6 @@ int kvm_io_bus_read(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr,
         return r < 0 ? r : 0;
 }
 
-/* kvm_io_bus_read_cookie - called under kvm->slots_lock */
-int kvm_io_bus_read_cookie(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr,
-                           int len, void *val, long cookie)
-{
-        struct kvm_io_bus *bus;
-        struct kvm_io_range range;
-
-        range = (struct kvm_io_range) {
-                .addr = addr,
-                .len = len,
-        };
-
-        bus = srcu_dereference(kvm->buses[bus_idx], &kvm->srcu);
-
-        /* First try the device referenced by cookie. */
-        if ((cookie >= 0) && (cookie < bus->dev_count) &&
-            (kvm_io_bus_cmp(&range, &bus->range[cookie]) == 0))
-                if (!kvm_iodevice_read(bus->range[cookie].dev, addr, len,
-                                       val))
-                        return cookie;
-
-        /*
-         * cookie contained garbage; fall back to search and return the
-         * correct cookie value.
-         */
-        return __kvm_io_bus_read(bus, &range, val);
-}
 
 /* Caller must hold slots_lock. */
 int kvm_io_bus_register_dev(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr,