From 41ae63cd0a75474ce380a944d5b4f1fb9b6fd2e0 Mon Sep 17 00:00:00 2001
From: Atish Patra <atish.patra@wdc.com>
Date: Sat, 10 Jul 2021 09:18:07 -0700
Subject: include: Add a list empty check function
Implement a list helper function that checks for empty lists.
Reviewed-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Xiang W <wxjstz@126.com>
Signed-off-by: Atish Patra <atish.patra@wdc.com>
---
include/sbi/sbi_list.h | 11 +++++++++++
1 file changed, 11 insertions(+)
(limited to 'include')
diff --git a/include/sbi/sbi_list.h b/include/sbi/sbi_list.h
index 1174ad2..b1178df 100644
--- a/include/sbi/sbi_list.h
+++ b/include/sbi/sbi_list.h
@@ -43,6 +43,17 @@ static inline void __sbi_list_add(struct sbi_dlist *new,
next->prev = new;
}
+/**
+ * Checks if the list is empty or not.
+ * @param head List head
+ *
+ * Retruns TRUE if list is empty, FALSE otherwise.
+ */
+static inline bool sbi_list_empty(struct sbi_dlist *head)
+{
+ return head->next == head;
+}
+
/**
* Adds the new node after the given head.
* @param new New node that needs to be added to list.
--
cgit v1.2.3