From 32474838c0c8fd193f6be8db9d3325421ab8f9f2 Mon Sep 17 00:00:00 2001
From: Pavel Kirienko <pavel.kirienko@gmail.com>
Date: Thu, 17 Apr 2014 12:50:24 +0400
Subject: [PATCH] LPC11C24: Fixed undefined behavior in clock driver

---
 libuavcan_drivers/lpc11c24/driver/src/clock.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/libuavcan_drivers/lpc11c24/driver/src/clock.cpp b/libuavcan_drivers/lpc11c24/driver/src/clock.cpp
index 2f2ed414d3..c689154e54 100644
--- a/libuavcan_drivers/lpc11c24/driver/src/clock.cpp
+++ b/libuavcan_drivers/lpc11c24/driver/src/clock.cpp
@@ -68,7 +68,8 @@ static uint64_t sampleFromCriticalSection(const volatile uint64_t* const value)
         cycles = reload - SysTick->VAL;
         time += USecPerOverflow;
     }
-    return time + (cycles / (SystemCoreClock / 1000000));
+    const uint32_t cycles_per_usec = SystemCoreClock / 1000000;
+    return time + (cycles / cycles_per_usec);
 }
 
 uint64_t getUtcUSecFromCanInterrupt()