diff --git a/[refs] b/[refs]
index 8b70ddc1c79e..9af25815cb8c 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: a5b9e2c1063046421ce01dcf5ddd7ec12567f3e1
+refs/heads/master: d994ffc247f7c4a48b848f10c4c01c9b06411ada
diff --git a/trunk/include/linux/kfifo.h b/trunk/include/linux/kfifo.h
index 7ad6d32dd673..c8618243ca5a 100644
--- a/trunk/include/linux/kfifo.h
+++ b/trunk/include/linux/kfifo.h
@@ -116,6 +116,16 @@ extern __must_check unsigned int kfifo_out(struct kfifo *fifo,
 extern __must_check unsigned int kfifo_out_peek(struct kfifo *fifo,
 				void *to, unsigned int len, unsigned offset);
 
+/**
+ * kfifo_initialized - Check if kfifo is initialized.
+ * @fifo: fifo to check
+ * Return %true if FIFO is initialized, otherwise %false.
+ * Assumes the fifo was 0 before.
+ */
+static inline bool kfifo_initialized(struct kfifo *fifo)
+{
+	return fifo->buffer != 0;
+}
 
 /**
  * kfifo_reset - removes the entire FIFO contents