From: andreaskoepke <andreaskoepke>
Date: Wed, 17 Dec 2008 17:42:22 +0000 (+0000)
Subject: avoid integer overflow
X-Git-Tag: rc_6_tinyos_2_1_1~542
X-Git-Url: https://oss.titaniummirror.com/gitweb/?a=commitdiff_plain;ds=sidebyside;h=98d4eae39755d369b001971ec9c5f1dd741bc82d;p=tinyos-2.x.git

avoid integer overflow
---

diff --git a/tos/chips/cc2420/lpl/DefaultLplP.nc b/tos/chips/cc2420/lpl/DefaultLplP.nc
index d93debb0..3ada9db6 100644
--- a/tos/chips/cc2420/lpl/DefaultLplP.nc
+++ b/tos/chips/cc2420/lpl/DefaultLplP.nc
@@ -230,7 +230,7 @@ implementation {
       return 0;
     }
     
-    return (DUTY_ON_TIME * (10000 - dutyCycle)) / dutyCycle;
+    return ((uint32_t)DUTY_ON_TIME * (10000 - dutyCycle)) / dutyCycle;
   }
   
   /**
@@ -245,7 +245,7 @@ implementation {
       return 10000;
     }
     
-    return getActualDutyCycle((DUTY_ON_TIME * 10000) 
+    return getActualDutyCycle(((uint32_t)DUTY_ON_TIME * 10000) 
         / (sleepInterval + DUTY_ON_TIME));
   }