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2023-12-09 b22da3d8526a935aa31e086e63f60ff3246cb61c

 kernel/drivers/usb/usbip/stub_dev.c
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@@ -140,38 +140,13 @@
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 }
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 static DEVICE_ATTR_WO(usbip_sockfd);
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-static int stub_add_files(struct device *dev)
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-{
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-	int err = 0;
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-
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-	err = device_create_file(dev, &dev_attr_usbip_status);
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-	if (err)
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-		goto err_status;
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-
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-	err = device_create_file(dev, &dev_attr_usbip_sockfd);
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-	if (err)
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-		goto err_sockfd;
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-
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-	err = device_create_file(dev, &dev_attr_usbip_debug);
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-	if (err)
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-		goto err_debug;
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-
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-	return 0;
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-
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-err_debug:
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-	device_remove_file(dev, &dev_attr_usbip_sockfd);
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-err_sockfd:
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-	device_remove_file(dev, &dev_attr_usbip_status);
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-err_status:
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-	return err;
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-}
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-
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-static void stub_remove_files(struct device *dev)
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-{
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-	device_remove_file(dev, &dev_attr_usbip_status);
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-	device_remove_file(dev, &dev_attr_usbip_sockfd);
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-	device_remove_file(dev, &dev_attr_usbip_debug);
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-}
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+static struct attribute *usbip_attrs[] = {
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+	&dev_attr_usbip_status.attr,
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+	&dev_attr_usbip_sockfd.attr,
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+	&dev_attr_usbip_debug.attr,
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+	NULL,
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+};
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+ATTRIBUTE_GROUPS(usbip);
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150
 
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 static void stub_shutdown_connection(struct usbip_device *ud)
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 {
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@@ -414,20 +389,10 @@
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 		goto err_port;
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 	}
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-	rc = stub_add_files(&udev->dev);
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-	if (rc) {
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-		dev_err(&udev->dev, "stub_add_files for %s\n", udev_busid);
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-		goto err_files;
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-	}
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-
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 	return 0;
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393
 
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-err_files:
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-	usb_hub_release_port(udev->parent, udev->portnum,
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-			     (struct usb_dev_state *) udev);
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 err_port:
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 	dev_set_drvdata(&udev->dev, NULL);
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-	usb_put_dev(udev);
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396
 
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 	/* we already have busid_priv, just lock busid_lock */
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 	spin_lock(&busid_priv->busid_lock);
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@@ -442,6 +407,7 @@
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 	put_busid_priv(busid_priv);
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408
 
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 sdev_free:
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+	usb_put_dev(udev);
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 	stub_device_free(sdev);
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412
 
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 	return rc;
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@@ -492,7 +458,6 @@
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 	/*
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 	 * NOTE: rx/tx threads are invoked for each usb_device.
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 	 */
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-	stub_remove_files(&udev->dev);
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461
 
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 	/* release port */
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 	rc = usb_hub_release_port(udev->parent, udev->portnum,
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@@ -561,4 +526,5 @@
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 	.resume		= stub_resume,
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 #endif
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 	.supports_autosuspend	=	0,
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+	.dev_groups	= usbip_groups,
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 };