dlog(ms, "intr b4 arb, intr/exc/err/fc=%.8x",
                                     MKWORD(mr->interrupt, mr->exception,
                                            mr->error, mr->fifo_count));
-                               mesh_interrupt(0, (void *)ms, NULL);
+                               mesh_interrupt(0, (void *)ms);
                                if (ms->phase != arbitrating)
                                        return;
                        }
                dlog(ms, "intr after disresel, intr/exc/err/fc=%.8x",
                     MKWORD(mr->interrupt, mr->exception,
                            mr->error, mr->fifo_count));
-               mesh_interrupt(0, (void *)ms, NULL);
+               mesh_interrupt(0, (void *)ms);
                if (ms->phase != arbitrating)
                        return;
                dlog(ms, "after intr after disresel, intr/exc/err/fc=%.8x",