From 893c7233854581a7fd47013c3038cc0769d37f94 Mon Sep 17 00:00:00 2001
From: Steffen Vogel <stvogel@eonerc.rwth-aachen.de>
Date: Sun, 30 Oct 2016 15:39:05 -0400
Subject: [PATCH] readded check for correct queue size (accidentally removed)

---
 lib/queue.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/lib/queue.c b/lib/queue.c
index 55b8f6f3a..f3207b3a0 100644
--- a/lib/queue.c
+++ b/lib/queue.c
@@ -36,6 +36,11 @@
 /** Initialize MPMC queue */
 int queue_init(struct queue *q, size_t size, const struct memtype *mem)
 {
+	
+	/* Queue size must be 2 exponent */
+	if (!IS_POW2(size))
+		return -1;
+	
 	q->mem = mem;
 	q->buffer_mask = size - 1;
 	q->buffer = memory_alloc(q->mem, sizeof(q->buffer[0]) * size);