40 #define DRMINITLISTHEAD(__item)		       \  argument
42     (__item)->prev = (__item);		       \
43     (__item)->next = (__item);		       \
46 #define DRMLISTADD(__item, __list)		\  argument
48     (__item)->prev = (__list);			\
49     (__item)->next = (__list)->next;		\
50     (__list)->next->prev = (__item);		\
51     (__list)->next = (__item);			\
54 #define DRMLISTADDTAIL(__item, __list)		\  argument
56     (__item)->next = (__list);			\
57     (__item)->prev = (__list)->prev;		\
58     (__list)->prev->next = (__item);		\
59     (__list)->prev = (__item);			\
62 #define DRMLISTDEL(__item)			\  argument
64     (__item)->prev->next = (__item)->next;	\
65     (__item)->next->prev = (__item)->prev;	\
68 #define DRMLISTDELINIT(__item)			\  argument
70     (__item)->prev->next = (__item)->next;	\
71     (__item)->next->prev = (__item)->prev;	\
72     (__item)->next = (__item);			\
73     (__item)->prev = (__item);			\
76 #define DRMLISTENTRY(__type, __item, __field)   \  argument
77     ((__type *)(((char *) (__item)) - offsetof(__type, __field)))
79 #define DRMLISTEMPTY(__item) ((__item)->next == (__item))  argument
84 #define DRMLISTFOREACH(__item, __list)					\  argument
85 	for ((__item) = (__list)->next;					\
86 	     (__item) != (__list); (__item) = (__item)->next)
88 #define DRMLISTFOREACHSAFE(__item, __temp, __list)			\  argument
89 	for ((__item) = (__list)->next, (__temp) = (__item)->next;	\
90 	     (__item) != (__list);					\
91 	     (__item) = (__temp), (__temp) = (__item)->next)
93 #define DRMLISTFOREACHSAFEREVERSE(__item, __temp, __list)		\  argument
94 	for ((__item) = (__list)->prev, (__temp) = (__item)->prev;	\
95 	     (__item) != (__list);					\
96 	     (__item) = (__temp), (__temp) = (__item)->prev)
98 #define DRMLISTFOREACHENTRY(__item, __list, __head)                            \  argument
99 	for ((__item) = DRMLISTENTRY(typeof(*__item), (__list)->next, __head); \
100 	     &(__item)->__head != (__list);                                    \
101 	     (__item) = DRMLISTENTRY(typeof(*__item),                          \
102 				     (__item)->__head.next, __head))
104 #define DRMLISTFOREACHENTRYSAFE(__item, __temp, __list, __head)                \  argument
105 	for ((__item) = DRMLISTENTRY(typeof(*__item), (__list)->next, __head), \
106 	     (__temp) = DRMLISTENTRY(typeof(*__item),                          \
107 				     (__item)->__head.next, __head);           \
108 	     &(__item)->__head != (__list);                                    \
109 	     (__item) = (__temp),                                              \
110 	     (__temp) = DRMLISTENTRY(typeof(*__item),                          \