From 5d366235ac0b75eecfe6107a5375829534b0e3f1 Mon Sep 17 00:00:00 2001
From: patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3>
Date: Sun, 1 Jan 2012 15:57:03 +0000
Subject: [PATCH] Fix an integer overflow bug in LPC17xx GPIO interrupt
 configuration

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4247 42af7a65-404d-4744-a932-0658087f49c3
---
 arch/arm/src/lpc17xx/lpc17_gpio.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/arm/src/lpc17xx/lpc17_gpio.c b/arch/arm/src/lpc17xx/lpc17_gpio.c
index 9dd594c31e..4cc73a3fc6 100755
--- a/arch/arm/src/lpc17xx/lpc17_gpio.c
+++ b/arch/arm/src/lpc17xx/lpc17_gpio.c
@@ -301,9 +301,9 @@ static void lpc17_setintedge(unsigned int port, unsigned int pin,
 
   /* Set the requested value in the PINSEL register */
 
-  shift = pin << 1;
-  *intedge &= ~(3 << shift);
-  *intedge |= (value << shift);
+  shift     = pin << 1;
+  *intedge &= ~((uint64_t)3     << shift);
+  *intedge |=  ((uint64_t)value << shift);
 }
 #endif