D43440.diff
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	diff --git a/sys/powerpc/include/bus.h b/sys/powerpc/include/bus.h
	--- a/sys/powerpc/include/bus.h
	+++ b/sys/powerpc/include/bus.h
	@@ -103,7 +103,7 @@
	/* mapping/unmapping */
	int (*bs_map)(bus_addr_t, bus_size_t, int,
	bus_space_handle_t *);
	- void (*bs_unmap)(bus_size_t);
	+ void (*bs_unmap)(bus_space_handle_t, bus_size_t);
	int (*bs_subregion)(bus_space_handle_t, bus_size_t,
	bus_size_t, bus_space_handle_t *);

	diff --git a/sys/powerpc/powerpc/bus_machdep.c b/sys/powerpc/powerpc/bus_machdep.c
	--- a/sys/powerpc/powerpc/bus_machdep.c
	+++ b/sys/powerpc/powerpc/bus_machdep.c
	@@ -140,8 +140,13 @@
	}

	static void
	-bs_gen_unmap(bus_size_t size __unused)
	+bs_gen_unmap(bus_space_handle_t bsh, bus_size_t size)
	{
	+
	+ if (!pmap_bootstrapped)
	+ return;
	+
	+ pmap_unmapdev((void *)bsh, size);
	}

	static int