linux-kernel - [PATCH 3/3] Input: aiptek - switch to using dev

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Message-Id: <20220903051119.1332808-3-dmitry.torokhov@gmail.com>
Date:   Fri,  2 Sep 2022 22:11:19 -0700
From:   Dmitry Torokhov <dmitry.torokhov@...il.com>
To:     linux-input@...r.kernel.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     linux-kernel@...r.kernel.org
Subject: [PATCH 3/3] Input: aiptek - switch to using dev_groups for driver-specific attributes

The driver core now has the ability to handle the creation and removal
of device-specific sysfs files, let's use it instead of registering and
unregistering attributes by hand.

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@...il.com>
---
 drivers/input/tablet/aiptek.c | 20 ++++----------------
 1 file changed, 4 insertions(+), 16 deletions(-)

diff --git a/drivers/input/tablet/aiptek.c b/drivers/input/tablet/aiptek.c
index 24ec4844a5c3..baabc51547b8 100644
--- a/drivers/input/tablet/aiptek.c
+++ b/drivers/input/tablet/aiptek.c
@@ -1617,7 +1617,7 @@ static ssize_t show_firmwareCode(struct device *dev, struct device_attribute *at
 
 static DEVICE_ATTR(firmware_code, S_IRUGO, show_firmwareCode, NULL);
 
-static struct attribute *aiptek_attributes[] = {
+static struct attribute *aiptek_dev_attrs[] = {
 	&dev_attr_size.attr,
 	&dev_attr_pointer_mode.attr,
 	&dev_attr_coordinate_mode.attr,
@@ -1641,9 +1641,7 @@ static struct attribute *aiptek_attributes[] = {
 	NULL
 };
 
-static const struct attribute_group aiptek_attribute_group = {
-	.attrs	= aiptek_attributes,
-};
+ATTRIBUTE_GROUPS(aiptek_dev);
 
 /***********************************************************************
  * This routine is called when a tablet has been identified. It basically
@@ -1842,26 +1840,16 @@ aiptek_probe(struct usb_interface *intf, const struct usb_device_id *id)
 	 */
 	usb_set_intfdata(intf, aiptek);
 
-	/* Set up the sysfs files
-	 */
-	err = sysfs_create_group(&intf->dev.kobj, &aiptek_attribute_group);
-	if (err) {
-		dev_warn(&intf->dev, "cannot create sysfs group err: %d\n",
-			 err);
-		goto fail3;
-        }
-
 	/* Register the tablet as an Input Device
 	 */
 	err = input_register_device(aiptek->inputdev);
 	if (err) {
 		dev_warn(&intf->dev,
 			 "input_register_device returned err: %d\n", err);
-		goto fail4;
+		goto fail3;
         }
 	return 0;
 
- fail4:	sysfs_remove_group(&intf->dev.kobj, &aiptek_attribute_group);
  fail3: usb_free_urb(aiptek->urb);
  fail2:	usb_free_coherent(usbdev, AIPTEK_PACKET_LENGTH, aiptek->data,
 			  aiptek->data_dma);
@@ -1886,7 +1874,6 @@ static void aiptek_disconnect(struct usb_interface *intf)
 		 */
 		usb_kill_urb(aiptek->urb);
 		input_unregister_device(aiptek->inputdev);
-		sysfs_remove_group(&intf->dev.kobj, &aiptek_attribute_group);
 		usb_free_urb(aiptek->urb);
 		usb_free_coherent(interface_to_usbdev(intf),
 				  AIPTEK_PACKET_LENGTH,
@@ -1900,6 +1887,7 @@ static struct usb_driver aiptek_driver = {
 	.probe = aiptek_probe,
 	.disconnect = aiptek_disconnect,
 	.id_table = aiptek_ids,
+	.dev_groups = aiptek_dev_groups,
 };
 
 module_usb_driver(aiptek_driver);
-- 
2.37.2.789.g6183377224-goog