add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/usb/misc/usbsevseg.c
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@@ -316,7 +316,7 @@
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 MYDEV_ATTR_SIMPLE_UNSIGNED(mode_msb, update_display_mode);
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 MYDEV_ATTR_SIMPLE_UNSIGNED(mode_lsb, update_display_mode);
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-static struct attribute *dev_attrs[] = {
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+static struct attribute *sevseg_attrs[] = {
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 	&dev_attr_powered.attr,
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 	&dev_attr_text.attr,
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 	&dev_attr_textmode.attr,
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@@ -325,10 +325,7 @@
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 	&dev_attr_mode_lsb.attr,
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 	NULL
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 };
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-
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-static const struct attribute_group dev_attr_grp = {
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-	.attrs = dev_attrs,
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-};
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+ATTRIBUTE_GROUPS(sevseg);
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 static int sevseg_probe(struct usb_interface *interface,
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 	const struct usb_device_id *id)
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@@ -354,17 +351,9 @@
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 	mydev->mode_msb = 0x06; /* 6 characters */
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 	mydev->mode_lsb = 0x3f; /* scanmode for 6 chars */
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-	rc = sysfs_create_group(&interface->dev.kobj, &dev_attr_grp);
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-	if (rc)
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-		goto error;
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-
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 	dev_info(&interface->dev, "USB 7 Segment device now attached\n");
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 	return 0;
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-error:
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-	usb_set_intfdata(interface, NULL);
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-	usb_put_dev(mydev->udev);
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-	kfree(mydev);
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 error_mem:
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 	return rc;
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 }
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@@ -374,7 +363,6 @@
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 	struct usb_sevsegdev *mydev;
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 	mydev = usb_get_intfdata(interface);
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-	sysfs_remove_group(&interface->dev.kobj, &dev_attr_grp);
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 	usb_set_intfdata(interface, NULL);
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 	usb_put_dev(mydev->udev);
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 	kfree(mydev);
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@@ -423,6 +411,7 @@
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 	.resume =	sevseg_resume,
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 	.reset_resume =	sevseg_reset_resume,
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 	.id_table =	id_table,
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+	.dev_groups =	sevseg_groups,
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 	.supports_autosuspend = 1,
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 };
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