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Add support for empty ranges properties within the tree, some vendor

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device trees have these, for example the ARM AArch64 Foundation Model.

Sponsored by:	The FreeBSD Foundation
This commit is contained in:
Andrew Turner 2014-12-19 13:07:36 +00:00
parent ac4203e2ab
commit 30ef1a05c2
1 changed files with 8 additions and 3 deletions
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11
sys/dev/fdt/fdt_common.c
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@ -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)