From 898bd07810ecce4aa95599421c3665005c740533 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Philippe=20R=C3=A9tornaz?= <philippe.retornaz@epfl.ch>
Date: Fri, 14 Sep 2012 13:33:00 +0200
Subject: [PATCH] cc253x: optionally push bits in p2 interrupt

See Pull Request #18
---
 cpu/cc253x/dev/port2-intr.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/cpu/cc253x/dev/port2-intr.c b/cpu/cc253x/dev/port2-intr.c
index 699ba3adf..0cc9dfa09 100644
--- a/cpu/cc253x/dev/port2-intr.c
+++ b/cpu/cc253x/dev/port2-intr.c
@@ -33,6 +33,11 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 extern struct cc253x_p2_handler *handlers;
 
+/* avoid referencing bits, we don't call code which use them */
+#pragma save
+#if CC_CONF_OPTIMIZE_STACK_SIZE
+#pragma exclude bits
+#endif
 void
 port_2_isr(void) __interrupt(P2INT_VECTOR)
 {
@@ -47,3 +52,4 @@ port_2_isr(void) __interrupt(P2INT_VECTOR)
     P2IF = 0;
   }
 }
+#pragma restore