usb: usb_generic_probe() obeys authorization

If called and the device is not authorized to be used, then we won't
choose a configuration (as they are not a concept that exists for an
unauthorized device). However, the device is added to the system.

Signed-off-by: Inaky Perez-Gonzalez <inaky@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 11 insertions, 8 deletions

diff --git a/drivers/usb/core/generic.c b/drivers/usb/core/generic.c
index b2fc2b115256..20b095050a16 100644
--- a/drivers/usb/core/generic.c
+++ b/drivers/usb/core/generic.c
@@ -161,17 +161,20 @@ static int generic_probe(struct usb_device *udev)
         /* Choose and set the configuration.  This registers the interfaces
          * with the driver core and lets interface drivers bind to them.
          */
-        c = choose_configuration(udev);
-        if (c >= 0) {
-                err = usb_set_configuration(udev, c);
-                if (err) {
-                        dev_err(&udev->dev, "can't set config #%d, error %d\n",
+        if (udev->authorized == 0)
+                dev_err(&udev->dev, "Device is not authorized for usage\n");
+        else {
+                c = choose_configuration(udev);
+                if (c >= 0) {
+                        err = usb_set_configuration(udev, c);
+                        if (err) {
+                                dev_err(&udev->dev, "can't set config #%d, error %d\n",
                                         c, err);
-                        /* This need not be fatal.  The user can try to
-                         * set other configurations. */
+                                /* This need not be fatal.  The user can try to
+                                 * set other configurations. */
+                        }
                 }
         }
-
         /* USB device state == configured ... usable */
         usb_notify_add_device(udev);