Driver probings and interface claims get rejected
if an interface is not authorized.
Signed-off-by: Stefan Koch <stefan.koch10@xxxxxxxxx>
---
drivers/usb/core/driver.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c
index 818369a..9908e74 100644
--- a/drivers/usb/core/driver.c
+++ b/drivers/usb/core/driver.c
@@ -295,6 +295,10 @@ 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);
@@ -507,6 +511,10 @@ 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;
--
2.1.4
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