X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=include%2Fcommon.h;h=26e1b469a12e048da358580131c52e7d110ad83f;hb=b77cddc7b52acd4ed78830ac681a398dd3053938;hp=d0f57040ee435c627457711d264fa34682a0816e;hpb=42fd5f87b1613d3039f57e93c16f760a768d3e84;p=platform%2Fkernel%2Fu-boot.git

diff --git a/include/common.h b/include/common.h
index d0f5704..26e1b46 100644
--- a/include/common.h
+++ b/include/common.h
@@ -176,6 +176,17 @@ typedef void (interrupt_handler_t)(void *);
 		(__x > __y) ? __x : __y; })
 
 
+/**
+ * container_of - cast a member of a structure out to the containing structure
+ * @ptr:	the pointer to the member.
+ * @type:	the type of the container struct this is embedded in.
+ * @member:	the name of the member within the struct.
+ *
+ */
+#define container_of(ptr, type, member) ({			\
+	const typeof( ((type *)0)->member ) *__mptr = (ptr);	\
+	(type *)( (char *)__mptr - offsetof(type,member) );})
+
 /*
  * Function Prototypes
  */