Driver probings and interface claims get rejected
if an interface is not authorized.
Signed-off-by: Stefan Koch <skoch@xxxxxxx>
---
drivers/usb/core/driver.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c
index 818369a..3344daf 100644
--- a/drivers/usb/core/driver.c
+++ b/drivers/usb/core/driver.c
@@ -295,6 +295,13 @@ 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) {
+ unsigned intf_num = intf->altsetting->desc.bInterfaceNumber;
+
+ dev_err(&intf->dev, "Interface %d is not authorized for usage\n",
+ intf_num);
+
+ return error;
}
id = usb_match_dynamic_id(intf, driver);
@@ -507,6 +514,10 @@ int usb_driver_claim_interface(struct usb_driver *driver,
if (dev->driver)
return -EBUSY;
+ /* reject claim if not iterface is not authorized */
+ if (!iface->authorized)
+ return -ENODEV;
+
udev = interface_to_usbdev(iface);
dev->driver = &driver->drvwrap.driver;
--
2.1.4
--
To unsubscribe from this list: send the line "unsubscribe linux-usb" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
