diff --git a/arch/arm/mach-s3c24xx/common.c b/arch/arm/mach-s3c24xx/common.c
index 0c9e9a785ef6e85d7e41260e09de23f1397a0871..6bcf87f65f9e41c7cb86dfd064495eb3a76820af 100644
--- a/arch/arm/mach-s3c24xx/common.c
+++ b/arch/arm/mach-s3c24xx/common.c
@@ -197,7 +197,7 @@ static unsigned long s3c24xx_read_idcode_v4(void)
 
 static void s3c24xx_default_idle(void)
 {
-	unsigned long tmp;
+	unsigned long tmp = 0;
 	int i;
 
 	/* idle the system by using the idle mode which will wait for an