USB: fix usb gadget ffs string id bug.

diff --git a/drivers/usb/gadget/android.c b/drivers/usb/gadget/android.c
index aade8773c8a2a4753db579b106733d835046a022..58c2b3c1c4d1a0ce99546742caf2d7ddad41cdd1 100755 (executable)
--- a/drivers/usb/gadget/android.c
+++ b/drivers/usb/gadget/android.c
@@ -347,6 +347,9 @@ static void functionfs_closed_callback(struct ffs_data *ffs)
        config->opened = false;
        config->data = NULL;
 
+       if (!WARN_ON(!ffs->gadget)) {
+               dev->cdev->next_string_id -= ffs->strings_count;
+       }
        functionfs_unbind(ffs);
 
        mutex_unlock(&dev->mutex);