Do as the comment suggests and determine the bus space based on the last

bus we actually mapped at rather than always based on the last bus we
encountered while moving upward in the tree. Otherwise we might use the
wrong bus space in case the bridge directly underneath the nexus doesn't
require mapping, i.e. was skipped as it's the case for ssm(4) nodes.

1 files changed, 5 insertions, 8 deletions

diff --git a/sys/sparc64/sparc64/ofw_machdep.c b/sys/sparc64/sparc64/ofw_machdep.c
index 9d52262..07f95e2 100644
--- a/sys/sparc64/sparc64/ofw_machdep.c
+++ b/sys/sparc64/sparc64/ofw_machdep.c
@@ -186,13 +186,10 @@ OF_decode_addr(phandle_t node, int bank, int *space, bus_addr_t *addr)
 			name[sizeof(name) - 1] = '\0';
 			goto skip;
 		}
-		if (lbus != bus) {
-			if (OF_getprop(bus, "#size-cells", &szc,
-			    sizeof(szc)) == -1)
-				szc = 1;
-			if (szc < 1 || szc > 2)
-				return (ENXIO);
-		}
+		if (OF_getprop(bus, "#size-cells", &szc, sizeof(szc)) == -1)
+			szc = 1;
+		if (szc < 1 || szc > 2)
+			return (ENXIO);
 		nbank /= sizeof(banks[0]) * (addrc + paddrc + szc);
 		bank = 0;
 		for (i = 0; i < nbank; i++) {
@@ -232,9 +229,9 @@ OF_decode_addr(phandle_t node, int bank, int *space, bus_addr_t *addr)
 		}
 		if (i == nbank)
 			return (ENXIO);
+		lbus = bus;
  skip:
 		addrc = paddrc;
-		lbus = bus;
 		bus = pbus;
 	}