X-Git-Url: https://jxself.org/git/?a=blobdiff_plain;f=config%2Flist.h;fp=config%2Flist.h;h=ea1d58119d20c291d1f185c33e7cb0036e301112;hb=804ea83f028087bf20b21ede2a41f9ab5efe0df1;hp=b87206cc92f464650fad3a8ee4178ecfee6cf973;hpb=6da709bd7e0a559edd4313aa894e56da5606dc7b;p=carl9170fw.git

diff --git a/config/list.h b/config/list.h
index b87206c..ea1d581 100644
--- a/config/list.h
+++ b/config/list.h
@@ -101,4 +101,31 @@ static inline void list_add_tail(struct list_head *_new, struct list_head *head)
 	__list_add(_new, head->prev, head);
 }
 
+/*
+ * Delete a list entry by making the prev/next entries
+ * point to each other.
+ *
+ * This is only for internal list manipulation where we know
+ * the prev/next entries already!
+ */
+static inline void __list_del(struct list_head *prev, struct list_head *next)
+{
+	next->prev = prev;
+	prev->next = next;
+}
+
+#define LIST_POISON1  ((void *) 0x00100100)
+#define LIST_POISON2  ((void *) 0x00200200)
+/**
+ * list_del - deletes entry from list.
+ * @entry: the element to delete from the list.
+ * Note: list_empty() on entry does not return true after this, the entry is
+ * in an undefined state.
+ */
+static inline void list_del(struct list_head *entry)
+{
+	__list_del(entry->prev, entry->next);
+	entry->next = LIST_POISON1;
+	entry->prev = LIST_POISON2;
+}
 #endif