diff --git a/drivers/misc/pen/bu520xx_pen.c b/drivers/misc/pen/bu520xx_pen.c
index c3eaf09e4369..d49815dd3e1e 100644
--- a/drivers/misc/pen/bu520xx_pen.c
+++ b/drivers/misc/pen/bu520xx_pen.c
@@ -297,8 +297,8 @@ static void pen_report_function(struct work_struct *dat)
 	int counter, status = 0, initial_status;
 
 	pen_dbg_func_in();
-	if (!hall_sensor_dev->enable) {
-		pen_info("[%s] pen isn't enable,don't report.\n", DRIVER_NAME);
+	if (!hall_sensor_dev) {
+		pen_info("[%s] hall_sensor_dev isn't init.\n", DRIVER_NAME);
 		return;
 	}
 	initial_status = hall_sensor_dev->status;
@@ -321,6 +321,10 @@ static void pen_report_function(struct work_struct *dat)
 		return;
 	}
 
+	if (!hall_sensor_dev->pen_indev) {
+		pen_info("[%s] pen_indev isn't ready,don't report.\n", DRIVER_NAME);
+		return;
+	}
 	input_report_switch(hall_sensor_dev->pen_indev, SW_PEN_INSERTED, !hall_sensor_dev->status);
 	input_sync(hall_sensor_dev->pen_indev);
 #ifdef CONFIG_HAS_WAKELOCK
@@ -426,7 +430,7 @@ static int bu520xx_pen_probe(struct platform_device *pdev)
 	}
 
 	spin_lock_init(&hall_sensor_dev->mHallSensorLock);
-	hall_sensor_dev->enable = 0;
+	hall_sensor_dev->enable = 1;
 
 	//set gpio
 	hall_sensor_dev->gpio = of_get_named_gpio_flags(np,