diff --git a/arch/arm/mach-rk29/vpu.c b/arch/arm/mach-rk29/vpu.c
index b703fa1b94da..1749374dddd0 100644
--- a/arch/arm/mach-rk29/vpu.c
+++ b/arch/arm/mach-rk29/vpu.c
@@ -80,7 +80,7 @@ static struct vpu_client client;
 
 static void vpu_release_io(void);
 #ifdef CONFIG_RK29_VPU_DEBUG
-static void dump_regs(unsigned long data);
+static void dump_regs(struct vpu_device *);
 #endif
 
 static long vpu_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)