rk30: common: fix compile error implicit declaration of function 'IS_ERR'

diff --git a/arch/arm/mach-rk30/common.c b/arch/arm/mach-rk30/common.c
index c28e801aa2ab3ab1006c5741b13cc9109de736eb..39930f456a10e189c2ce33b7190d5854146e579b 100755 (executable)
--- a/arch/arm/mach-rk30/common.c
+++ b/arch/arm/mach-rk30/common.c
@@ -1,5 +1,6 @@
 #include <linux/clk.h>
 #include <linux/cpufreq.h>
+#include <linux/err.h>
 #include <linux/kernel.h>
 #include <linux/interrupt.h>
 #include <linux/irq.h>