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For DT unflattening, add missing memory initialization. This is needed

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for arches like PPC that use memblock_alloc. This appears to have been
 an issue for some time, but is a somewhat limited usecase of OF_DYNAMIC.
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Merge tag 'devicetree-fixes-for-3.11' of git://sources.calxeda.com/kernel/linux

Pull device tree fix from Rob Herring:
 "For DT unflattening, add missing memory initialization.

  This is needed for arches like PPC that use memblock_alloc.  This
  appears to have been an issue for some time, but is a somewhat limited
  usecase of OF_DYNAMIC"

* tag 'devicetree-fixes-for-3.11' of git://sources.calxeda.com/kernel/linux:
  of: fdt: fix memory initialization for expanded DT
This commit is contained in:
Linus Torvalds 2013-08-22 10:43:47 -07:00
commit 8351fcfe4f
1 changed files with 2 additions and 0 deletions
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2
drivers/of/fdt.c
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@ -392,6 +392,8 @@ static void __unflatten_device_tree(struct boot_param_header *blob,
mem = (unsigned long)
dt_alloc(size + 4, __alignof__(struct device_node));
memset((void *)mem, 0, size);
((__be32 *)mem)[size / 4] = cpu_to_be32(0xdeadbeef);
pr_debug(" unflattening %lx...\n", mem);