protocol.h: Add locate_protocol()

Signed-off-by: Matt Fleming <matt.fleming@linux.intel.com>

1 files changed, 13 insertions, 0 deletions

diff --git a/protocol.h b/protocol.h
index 6881d70..88b4a7b 100644
--- a/protocol.h
+++ b/protocol.h
@@ -51,6 +51,19 @@ handle_protocol(EFI_HANDLE handle, EFI_GUID *protocol, void **interface)
 }
 
 /**
+ * locate_protocol - Returns the first protocol instance for @protocol
+ * @protocol: the protocol to search for
+ * @registration: optional registration key
+ * @interface: used to return a pointer to the first matching interface
+ */
+static inline EFI_STATUS
+locate_protocol(EFI_GUID *protocol, void *registration, void **interface)
+{
+	return uefi_call_wrapper(boot->LocateProtocol, 3, protocol,
+				 registration, interface);
+}
+
+/**
  * locate_handle - Search for handles that support @protocol
  * @type: the search type, which handles are returned
  * @protocol: the protocol to search by (only valid if @type is ByProtocol)