Input: aiptek - use attribute group

Use attribute group to simplify error handling and reduce code.

[Rene: add missing NULL to properly terminate aiptek_attributes]

Signed-off-by: Rene van Paassen <rene.vanpaassen@gmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

diff --git a/drivers/input/tablet/aiptek.c b/drivers/input/tablet/aiptek.c
index f9a5f87..088da86 100644 (file)
--- a/drivers/input/tablet/aiptek.c
+++ b/drivers/input/tablet/aiptek.c
@@ -1795,67 +1795,33 @@ static ssize_t show_firmwareCode(struct device *dev, struct device_attribute *at
 
 static DEVICE_ATTR(firmware_code, S_IRUGO, show_firmwareCode, NULL);
 
-/***********************************************************************
- * This routine removes all existing sysfs files managed by this device
- * driver.
- */
-static void aiptek_delete_files(struct device *dev)
-{
-       device_remove_file(dev, &dev_attr_size);
-       device_remove_file(dev, &dev_attr_pointer_mode);
-       device_remove_file(dev, &dev_attr_coordinate_mode);
-       device_remove_file(dev, &dev_attr_tool_mode);
-       device_remove_file(dev, &dev_attr_xtilt);
-       device_remove_file(dev, &dev_attr_ytilt);
-       device_remove_file(dev, &dev_attr_jitter);
-       device_remove_file(dev, &dev_attr_delay);
-       device_remove_file(dev, &dev_attr_event_count);
-       device_remove_file(dev, &dev_attr_diagnostic);
-       device_remove_file(dev, &dev_attr_odm_code);
-       device_remove_file(dev, &dev_attr_model_code);
-       device_remove_file(dev, &dev_attr_firmware_code);
-       device_remove_file(dev, &dev_attr_stylus_lower);
-       device_remove_file(dev, &dev_attr_stylus_upper);
-       device_remove_file(dev, &dev_attr_mouse_left);
-       device_remove_file(dev, &dev_attr_mouse_middle);
-       device_remove_file(dev, &dev_attr_mouse_right);
-       device_remove_file(dev, &dev_attr_wheel);
-       device_remove_file(dev, &dev_attr_execute);
-}
-
-/***********************************************************************
- * This routine creates the sysfs files managed by this device
- * driver.
- */
-static int aiptek_add_files(struct device *dev)
-{
-       int ret;
+static struct attribute *aiptek_attributes[] = {
+       &dev_attr_size.attr,
+       &dev_attr_pointer_mode.attr,
+       &dev_attr_coordinate_mode.attr,
+       &dev_attr_tool_mode.attr,
+       &dev_attr_xtilt.attr,
+       &dev_attr_ytilt.attr,
+       &dev_attr_jitter.attr,
+       &dev_attr_delay.attr,
+       &dev_attr_event_count.attr,
+       &dev_attr_diagnostic.attr,
+       &dev_attr_odm_code.attr,
+       &dev_attr_model_code.attr,
+       &dev_attr_firmware_code.attr,
+       &dev_attr_stylus_lower.attr,
+       &dev_attr_stylus_upper.attr,
+       &dev_attr_mouse_left.attr,
+       &dev_attr_mouse_middle.attr,
+       &dev_attr_mouse_right.attr,
+       &dev_attr_wheel.attr,
+       &dev_attr_execute.attr,
+       NULL
+};
 
-       if ((ret = device_create_file(dev, &dev_attr_size)) ||
-           (ret = device_create_file(dev, &dev_attr_pointer_mode)) ||
-           (ret = device_create_file(dev, &dev_attr_coordinate_mode)) ||
-           (ret = device_create_file(dev, &dev_attr_tool_mode)) ||
-           (ret = device_create_file(dev, &dev_attr_xtilt)) ||
-           (ret = device_create_file(dev, &dev_attr_ytilt)) ||
-           (ret = device_create_file(dev, &dev_attr_jitter)) ||
-           (ret = device_create_file(dev, &dev_attr_delay)) ||
-           (ret = device_create_file(dev, &dev_attr_event_count)) ||
-           (ret = device_create_file(dev, &dev_attr_diagnostic)) ||
-           (ret = device_create_file(dev, &dev_attr_odm_code)) ||
-           (ret = device_create_file(dev, &dev_attr_model_code)) ||
-           (ret = device_create_file(dev, &dev_attr_firmware_code)) ||
-           (ret = device_create_file(dev, &dev_attr_stylus_lower)) ||
-           (ret = device_create_file(dev, &dev_attr_stylus_upper)) ||
-           (ret = device_create_file(dev, &dev_attr_mouse_left)) ||
-           (ret = device_create_file(dev, &dev_attr_mouse_middle)) ||
-           (ret = device_create_file(dev, &dev_attr_mouse_right)) ||
-           (ret = device_create_file(dev, &dev_attr_wheel)) ||
-           (ret = device_create_file(dev, &dev_attr_execute))) {
-               err("aiptek: killing own sysfs device files\n");
-               aiptek_delete_files(dev);
-       }
-       return ret;
-}
+static struct attribute_group aiptek_attribute_group = {
+       .attrs  = aiptek_attributes,
+};
 
 /***********************************************************************
  * This routine is called when a tablet has been identified. It basically
@@ -2039,25 +2005,30 @@ aiptek_probe(struct usb_interface *intf, const struct usb_device_id *id)
                }
        }
 
-       /* Register the tablet as an Input Device
-        */
-       err = input_register_device(aiptek->inputdev);
-       if (err)
-               goto fail2;
-
        /* Associate this driver's struct with the usb interface.
         */
        usb_set_intfdata(intf, aiptek);
 
        /* Set up the sysfs files
         */
-       aiptek_add_files(&intf->dev);
+       err = sysfs_create_group(&intf->dev.kobj, &aiptek_attribute_group);
+       if (err)
+               goto fail3;
+
+       /* Register the tablet as an Input Device
+        */
+       err = input_register_device(aiptek->inputdev);
+       if (err)
+               goto fail4;
 
        return 0;
 
+ fail4:        sysfs_remove_group(&intf->dev.kobj, &aiptek_attribute_group);
+ fail3: usb_free_urb(aiptek->urb);
  fail2:        usb_buffer_free(usbdev, AIPTEK_PACKET_LENGTH, aiptek->data,
                        aiptek->data_dma);
- fail1:        input_free_device(inputdev);
+ fail1: usb_set_intfdata(intf, NULL);
+       input_free_device(inputdev);
        kfree(aiptek);
        return err;
 }
@@ -2077,7 +2048,7 @@ static void aiptek_disconnect(struct usb_interface *intf)
                 */
                usb_kill_urb(aiptek->urb);
                input_unregister_device(aiptek->inputdev);
-               aiptek_delete_files(&intf->dev);
+               sysfs_remove_group(&intf->dev.kobj, &aiptek_attribute_group);
                usb_free_urb(aiptek->urb);
                usb_buffer_free(interface_to_usbdev(intf),
                                AIPTEK_PACKET_LENGTH,