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Commit 8d1f8573 authored by Stefan Koch's avatar Stefan Koch Committed by Greg Kroah-Hartman
Browse files

usb: interface authorization: Control interface probing and claiming 



Driver probings and interface claims get rejected
if an interface is not authorized.

Signed-off-by: default avatarStefan Koch <stefan.koch10@gmail.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 6b2bd3c8

drivers/usb/core/driver.c

+8 −0
Original line number Diff line number Diff line
@@ -296,6 +296,10 @@ static int usb_probe_interface(struct device *dev) 
	if (udev->authorized == 0) {

		dev_err(&intf->dev, "Device is not authorized for usage\n");

		return error;

	} else if (intf->authorized == 0) {

		dev_err(&intf->dev, "Interface %d is not authorized for usage\n",

				intf->altsetting->desc.bInterfaceNumber);

		return error;

	}



	id = usb_match_dynamic_id(intf, driver);
@@ -508,6 +512,10 @@ int usb_driver_claim_interface(struct usb_driver *driver, 
	if (dev->driver)

		return -EBUSY;



	/* reject claim if interface is not authorized */

	if (!iface->authorized)

		return -ENODEV;



	udev = interface_to_usbdev(iface);



	dev->driver = &driver->drvwrap.driver;