case VIDIOC_ENUM_FMT:
        {
                struct v4l2_fmtdesc *f = arg;
-               int index;
 
                switch (f->type) {
                case V4L2_BUF_TYPE_VIDEO_CAPTURE:
-               case V4L2_BUF_TYPE_VIDEO_OVERLAY: {
-                       index = f->index;
-                       if (index < 0 || index >= NUM_FORMATS) {
+               case V4L2_BUF_TYPE_VIDEO_OVERLAY:
+                       if (f->index >= NUM_FORMATS)
                                return -EINVAL;
-                       }
-                       memset(f,0,sizeof(*f));
-                       f->index = index;
-                       strlcpy((char *)f->description,formats[index].name,sizeof(f->description));
-                       f->pixelformat = formats[index].pixelformat;
+                       strlcpy((char *)f->description, formats[f->index].name,
+                                       sizeof(f->description));
+                       f->pixelformat = formats[f->index].pixelformat;
+                       f->flags = 0;
+                       memset(f->reserved, 0, sizeof(f->reserved));
                        break;
-               }
                default:
                        return -EINVAL;
                }