usb: interface authorization: Control interface probing and claiming
Driver probings and interface claims get rejected if an interface is not authorized. Signed-off-by: Stefan Koch <skoch@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -296,6 +296,10 @@ static int usb_probe_interface(struct device *dev)
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if (udev->authorized == 0) {
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dev_err(&intf->dev, "Device is not authorized for usage\n");
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return error;
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} else if (intf->authorized == 0) {
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dev_err(&intf->dev, "Interface %d is not authorized for usage\n",
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intf->altsetting->desc.bInterfaceNumber);
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return error;
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}
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id = usb_match_dynamic_id(intf, driver);
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@ -508,6 +512,10 @@ int usb_driver_claim_interface(struct usb_driver *driver,
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if (dev->driver)
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return -EBUSY;
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/* reject claim if not iterface is not authorized */
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if (!iface->authorized)
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return -ENODEV;
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udev = interface_to_usbdev(iface);
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dev->driver = &driver->drvwrap.driver;
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