X-Git-Url: https://jxself.org/git/?a=blobdiff_plain;ds=sidebyside;f=include%2Flinux%2Fcompiler.h;h=cd97693822d7d8f0df3f0aa6f9d03b47ae747bce;hb=455aaa1537c1bc0f9bc7e2ffa6802c8e4872738a;hp=e40d8aec3c45f5ab284e03156bdcab93f31e97b5;hpb=a1f8f8c3924cff7ffbe15236c18e393f046ad755;p=carl9170fw.git

diff --git a/include/linux/compiler.h b/include/linux/compiler.h
index e40d8ae..cd97693 100644
--- a/include/linux/compiler.h
+++ b/include/linux/compiler.h
@@ -111,4 +111,20 @@ static inline unsigned int hweight8(unsigned int w)
         return (res + (res >> 4)) & 0x0F;
 }
 
+/**
+ * DECLARE_FLEX_ARRAY() - Declare a flexible array usable in a union
+ *
+ * @TYPE: The type of each flexible array element
+ * @NAME: The name of the flexible array member
+ *
+ * In order to have a flexible array member in a union or alone in a
+ * struct, it needs to be wrapped in an anonymous struct with at least 1
+ * named member, but that member can be empty.
+ */
+#define DECLARE_FLEX_ARRAY(TYPE, NAME)	\
+	struct { \
+		struct { } __empty_ ## NAME; \
+		TYPE NAME[]; \
+	}
+
 #endif /* __SHARED_COMPILER_H */