Author: andrew
Date: Fri Dec 19 13:07:36 2014
New Revision: 275937
URL: https://svnweb.freebsd.org/changeset/base/275937
Log:
Add support for empty ranges properties within the tree, some vendor
device trees have these, for example the ARM AArch64 Foundation Model.
Sponsored by: The FreeBSD Foundation
Modified:
head/sys/dev/fdt/fdt_common.c
Modified: head/sys/dev/fdt/fdt_common.c
==============================================================================
--- head/sys/dev/fdt/fdt_common.c Fri Dec 19 12:09:29 2014
(r275936)
+++ head/sys/dev/fdt/fdt_common.c Fri Dec 19 13:07:36 2014
(r275937)
@@ -75,6 +75,12 @@ fdt_get_range_by_busaddr(phandle_t node,
u_long bus_addr, par_bus_addr, pbase, psize;
int err, i, len, tuple_size, tuples;
+ if (node == 0) {
+ *base = 0;
+ *size = ULONG_MAX;
+ return (0);
+ }
+
if ((fdt_addrsize_cells(node, &addr_cells, &size_cells)) != 0)
return (ENXIO);
/*
@@ -91,9 +97,8 @@ fdt_get_range_by_busaddr(phandle_t node,
if (len > sizeof(ranges))
return (ENOMEM);
if (len == 0) {
- *base = 0;
- *size = ULONG_MAX;
- return (0);
+ return (fdt_get_range_by_busaddr(OF_parent(node), addr,
+ base, size));
}
if (OF_getprop(node, "ranges", ranges, sizeof(ranges)) <= 0)
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