if (len > 0) {
                if (frame->data_end - frame->data + len
                                                 > frame->v4l2_buf.length) {
-                       PDEBUG(D_ERR|D_PACK, "frame overflow %d > %d",
+                       PDEBUG(D_ERR|D_PACK, "frame overflow %zd > %d",
                                frame->data_end - frame->data + len,
                                frame->v4l2_buf.length);
                        packet_type = DISCARD_PACKET;
        struct timeval timestamp;
        int n, ret, ret2;
 
-       PDEBUG(D_FRAM, "read (%d)", count);
+       PDEBUG(D_FRAM, "read (%zd)", count);
        if (!gspca_dev->present)
                return -ENODEV;
        switch (gspca_dev->memory) {
        ret = copy_to_user(data, frame->data, count);
        if (ret != 0) {
                PDEBUG(D_ERR|D_STREAM,
-                       "read cp to user lack %d / %d", ret, count);
+                       "read cp to user lack %d / %zd", ret, count);
                ret = -EFAULT;
                goto out;
        }