From: Nathael Pajani <nathael.pajani@ed3l.fr>
Date: Thu, 21 Sep 2023 22:27:48 +0000 (+0200)
Subject: Add list_exactly_one() and list_more_than_one() utility functions
X-Git-Url: http://git.techno-innov.fr/?a=commitdiff_plain;h=48c73d2d49bfb4d0576bf6aae9d84307699e045c;p=soft%2Flpc122x%2Fcore

Add list_exactly_one() and list_more_than_one() utility functions
---

diff --git a/include/lib/list.h b/include/lib/list.h
index 41f3678..fda023c 100644
--- a/include/lib/list.h
+++ b/include/lib/list.h
@@ -132,6 +132,24 @@ static inline int list_empty(const struct list_head* head)
 	return head->next == head;
 }
 
+/**
+ * list_exactly_one - tests whether a list has exactly one element
+ * @head: the list to test.
+ */
+static inline int list_exactly_one(const struct list_head* head)
+{
+	return head->next == head->prev;
+}
+
+/**
+ * list_more_than_one - tests whether a list has more than one element
+ * @head: the list to test.
+ */
+static inline int list_more_than_one(const struct list_head* head)
+{
+	return head->next != head->prev;
+}
+
 /**
  * list_rotate_left - rotate the list to the left
  * @head: the head of the list