From 30ef1a05c2ad21af934b35a54dadf703449bb030 Mon Sep 17 00:00:00 2001 From: Andrew Turner Date: Fri, 19 Dec 2014 13:07:36 +0000 Subject: [PATCH] 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 --- sys/dev/fdt/fdt_common.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/sys/dev/fdt/fdt_common.c b/sys/dev/fdt/fdt_common.c index d99fdf26dcd..f00519e5646 100644 --- a/sys/dev/fdt/fdt_common.c +++ b/sys/dev/fdt/fdt_common.c @@ -75,6 +75,12 @@ fdt_get_range_by_busaddr(phandle_t node, u_long addr, u_long *base, 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, u_long addr, u_long *base, 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)