diff --git a/drivers/auxdisplay/charlcd.c b/drivers/auxdisplay/charlcd.c
index 09020bb8ad15..ae2692ec3963 100644
--- a/drivers/auxdisplay/charlcd.c
+++ b/drivers/auxdisplay/charlcd.c
@@ -595,6 +595,16 @@ static int charlcd_init(struct charlcd *lcd)
 	return 0;
 }
 
+static void charlcd_deinit(struct charlcd *lcd)
+{
+	struct charlcd_priv *priv = charlcd_to_priv(lcd);
+
+	if (lcd->ops->backlight) {
+		cancel_delayed_work_sync(&priv->bl_work);
+		lcd->ops->backlight(lcd, CHARLCD_OFF);
+	}
+}
+
 struct charlcd *charlcd_alloc(unsigned int drvdata_size)
 {
 	struct charlcd_priv *priv;
@@ -654,8 +664,10 @@ int charlcd_register(struct charlcd *lcd)
 		return ret;
 
 	ret = misc_register(&charlcd_dev);
-	if (ret)
+	if (ret) {
+		charlcd_deinit(lcd);
 		return ret;
+	}
 
 	the_charlcd = lcd;
 	register_reboot_notifier(&panel_notifier);
@@ -665,16 +677,11 @@ EXPORT_SYMBOL_GPL(charlcd_register);
 
 int charlcd_unregister(struct charlcd *lcd)
 {
-	struct charlcd_priv *priv = charlcd_to_priv(lcd);
-
 	unregister_reboot_notifier(&panel_notifier);
 	charlcd_puts(lcd, "\x0cLCD driver unloaded.\x1b[Lc\x1b[Lb\x1b[L-");
 	misc_deregister(&charlcd_dev);
 	the_charlcd = NULL;
-	if (lcd->ops->backlight) {
-		cancel_delayed_work_sync(&priv->bl_work);
-		priv->lcd.ops->backlight(&priv->lcd, CHARLCD_OFF);
-	}
+	charlcd_deinit(lcd);
 
 	return 0;
 }
diff --git a/drivers/auxdisplay/ht16k33.c b/drivers/auxdisplay/ht16k33.c
index 0b8ba754b343..19b5c14e58ff 100644
--- a/drivers/auxdisplay/ht16k33.c
+++ b/drivers/auxdisplay/ht16k33.c
@@ -547,11 +547,8 @@ static int ht16k33_keypad_probe(struct i2c_client *client,
 					ht16k33_keypad_irq_thread,
 					IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
 					DRIVER_NAME, keypad);
-	if (err) {
-		dev_err(dev, "irq request failed %d, error %d\n", client->irq,
-			err);
+	if (err)
 		return err;
-	}
 
 	ht16k33_keypad_stop(keypad->dev);
 
diff --git a/drivers/auxdisplay/panel.c b/drivers/auxdisplay/panel.c
index d8854cf15268..a7dfc53157bc 100644
--- a/drivers/auxdisplay/panel.c
+++ b/drivers/auxdisplay/panel.c
@@ -1450,43 +1450,6 @@ static struct logical_input *panel_bind_key(const char *name, const char *press,
 	return key;
 }
 
-#if 0
-/* tries to bind a callback function to the signal name <name>. The function
- * <press_fct> will be called with the <press_data> arg when the signal is
- * activated, and so on for <release_fct>/<release_data>
- * Returns the pointer to the new signal if ok, NULL if the signal could not
- * be bound.
- */
-static struct logical_input *panel_bind_callback(char *name,
-						 void (*press_fct)(int),
-						 int press_data,
-						 void (*release_fct)(int),
-						 int release_data)
-{
-	struct logical_input *callback;
-
-	callback = kmalloc(sizeof(*callback), GFP_KERNEL);
-	if (!callback)
-		return NULL;
-
-	memset(callback, 0, sizeof(struct logical_input));
-	if (!input_name2mask(name, &callback->mask, &callback->value,
-			     &scan_mask_i, &scan_mask_o))
-		return NULL;
-
-	callback->type = INPUT_TYPE_STD;
-	callback->state = INPUT_ST_LOW;
-	callback->rise_time = 1;
-	callback->fall_time = 1;
-	callback->u.std.press_fct = press_fct;
-	callback->u.std.press_data = press_data;
-	callback->u.std.release_fct = release_fct;
-	callback->u.std.release_data = release_data;
-	list_add(&callback->list, &logical_inputs);
-	return callback;
-}
-#endif
-
 static void keypad_init(void)
 {
 	int keynum;