linux-kernel - [PATCH 1/3] Input: atkbd - switch to using dev

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Date:   Fri,  2 Sep 2022 22:11:17 -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 1/3] Input: atkbd - 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/keyboard/atkbd.c | 16 ++++++----------
 1 file changed, 6 insertions(+), 10 deletions(-)

diff --git a/drivers/input/keyboard/atkbd.c b/drivers/input/keyboard/atkbd.c
index d4131236d18c..246958795f60 100644
--- a/drivers/input/keyboard/atkbd.c
+++ b/drivers/input/keyboard/atkbd.c
@@ -323,11 +323,13 @@ static umode_t atkbd_attr_is_visible(struct kobject *kobj,
 	return attr->mode;
 }
 
-static struct attribute_group atkbd_attribute_group = {
+static const struct attribute_group atkbd_attribute_group = {
 	.attrs	= atkbd_attributes,
 	.is_visible = atkbd_attr_is_visible,
 };
 
+__ATTRIBUTE_GROUPS(atkbd_attribute);
+
 static const unsigned int xl_table[] = {
 	ATKBD_RET_BAT, ATKBD_RET_ERR, ATKBD_RET_ACK,
 	ATKBD_RET_NAK, ATKBD_RET_HANJA, ATKBD_RET_HANGEUL,
@@ -922,8 +924,6 @@ static void atkbd_disconnect(struct serio *serio)
 {
 	struct atkbd *atkbd = serio_get_drvdata(serio);
 
-	sysfs_remove_group(&serio->dev.kobj, &atkbd_attribute_group);
-
 	atkbd_disable(atkbd);
 
 	input_unregister_device(atkbd->dev);
@@ -1271,21 +1271,16 @@ static int atkbd_connect(struct serio *serio, struct serio_driver *drv)
 	atkbd_set_keycode_table(atkbd);
 	atkbd_set_device_attrs(atkbd);
 
-	err = sysfs_create_group(&serio->dev.kobj, &atkbd_attribute_group);
-	if (err)
-		goto fail3;
-
 	atkbd_enable(atkbd);
 	if (serio->write)
 		atkbd_activate(atkbd);
 
 	err = input_register_device(atkbd->dev);
 	if (err)
-		goto fail4;
+		goto fail3;
 
 	return 0;
 
- fail4: sysfs_remove_group(&serio->dev.kobj, &atkbd_attribute_group);
  fail3:	serio_close(serio);
  fail2:	serio_set_drvdata(serio, NULL);
  fail1:	input_free_device(dev);
@@ -1378,7 +1373,8 @@ MODULE_DEVICE_TABLE(serio, atkbd_serio_ids);
 
 static struct serio_driver atkbd_drv = {
 	.driver		= {
-		.name	= "atkbd",
+		.name		= "atkbd",
+		.dev_groups	= atkbd_attribute_groups,
 	},
 	.description	= DRIVER_DESC,
 	.id_table	= atkbd_serio_ids,
-- 
2.37.2.789.g6183377224-goog