The function kvm_io_bus_read_cookie is defined but never used
in current in-tree code.
Signed-off-by: Stephen Hemminger <stephen@xxxxxxxxxxxxxxxxxx>
--- a/include/linux/kvm_host.h 2013-12-27 13:12:19.409612858 -0800
+++ b/include/linux/kvm_host.h 2013-12-27 13:12:42.261259369 -0800
@@ -172,8 +172,6 @@ int kvm_io_bus_write_cookie(struct kvm *
int len, const void *val, long cookie);
int kvm_io_bus_read(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr, int len,
void *val);
-int kvm_io_bus_read_cookie(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr,
- int len, void *val, long cookie);
int kvm_io_bus_register_dev(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr,
int len, struct kvm_io_device *dev);
int kvm_io_bus_unregister_dev(struct kvm *kvm, enum kvm_bus bus_idx,
--- a/virt/kvm/kvm_main.c 2013-12-27 13:12:19.413612796 -0800
+++ b/virt/kvm/kvm_main.c 2013-12-27 13:12:42.261259369 -0800
@@ -2937,33 +2937,6 @@ int kvm_io_bus_read(struct kvm *kvm, enu
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,
--
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