6131 struct scsi_device uses a 1-bit signed bitfield

@@ -148,11 +148,11 @@
          *
          * sd_tran_tgt_free_done - in some cases SCSA will call
          * tran_tgt_free(9E) independent of devinfo node state, this means
          * that uninitchild code should not call tran_tgt_free(9E).
          */
-        int                     sd_uninit_prevent:16,
+        unsigned                sd_uninit_prevent:16,
                                 sd_tran_tgt_free_done:1,
                                 sd_flags_pad:15;
 
         /*
          * The 'sd_tran_safe' field is a grotty hack that allows direct-access