diff --git a/src/lib/dspal b/src/lib/dspal
index a88d55925c..229f2f4d84 160000
--- a/src/lib/dspal
+++ b/src/lib/dspal
@@ -1 +1 @@
-Subproject commit a88d55925cc21d4f9ebc728deab85cbcbb218a52
+Subproject commit 229f2f4d8471564f01fe8330e5de1554a9b7aeb6
diff --git a/src/platforms/posix/work_queue/hrt_thread.c b/src/platforms/posix/work_queue/hrt_thread.c
index 52745afd62..9ba01d9eee 100644
--- a/src/platforms/posix/work_queue/hrt_thread.c
+++ b/src/platforms/posix/work_queue/hrt_thread.c
@@ -117,7 +117,6 @@ static void hrt_work_process()
 	uint64_t elapsed;
 	uint32_t remaining;
 	uint32_t next;
-	int ret;
 
 	/* Then process queued work.  We need to keep interrupts disabled while
 	 * we process items in the work list.
@@ -207,8 +206,7 @@ static void hrt_work_process()
 
 	/* might sleep less if a signal received and new item was queued */
 	//PX4_INFO("Sleeping for %u usec", next);
-	ret = usleep(next);
-	//PX4_INFO("WOKE UP %d", ret);
+	usleep(next);
 }
 
 /****************************************************************************