From 2fa1673ee0c08cb75cff0c61141340e74737a14d Mon Sep 17 00:00:00 2001
From: Lorenz Meier <lm@inf.ethz.ch>
Date: Thu, 24 Mar 2016 10:40:29 +0100
Subject: [PATCH] Make 800 bytes space on IO. From @tridge.

---
 src/modules/px4iofirmware/px4io.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/modules/px4iofirmware/px4io.h b/src/modules/px4iofirmware/px4io.h
index 3f35c471a5..73d222bbb8 100644
--- a/src/modules/px4iofirmware/px4io.h
+++ b/src/modules/px4iofirmware/px4io.h
@@ -48,6 +48,12 @@
 
 #include <systemlib/pwm_limit/pwm_limit.h>
 
+/*
+ hotfix: we are critically short of memory in px4io and this is the
+ easiest way to reclaim about 800 bytes.
+ */
+#define perf_alloc(a,b) NULL
+
 /*
  * Constants and limits.
  */