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Commit b087e1f3 authored by Dmitry Torokhov's avatar Dmitry Torokhov
Browse files

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: default avatarRene van Paassen <rene.vanpaassen@gmail.com>
Signed-off-by: default avatarDmitry Torokhov <dtor@mail.ru>
parent 5c659c62

drivers/input/tablet/aiptek.c

+40 −69
Original line number Diff line number Diff line
@@ -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,