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of/flattree: Fix unhandled OF_DT_NOP tag when unflattening the device tree 

NOPs within the property section are skipped, but NOPs between
OF_DT_END_NODE and OF_DT_BEGIN_NODE were not. My firmware NOPs out
entire nodes depending on various environment parameters.

of_scan_flat_dt already handles NOP more generally.

Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
This commit is contained in:
Jason Gunthorpe 2010-03-26 22:09:56 -06:00 committed by Grant Likely
parent 220bf991b0
commit 7f809e1f8e
1 changed files with 5 additions and 2 deletions
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7
drivers/of/fdt.c
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@ -376,8 +376,11 @@ unsigned long __init unflatten_dt_node(unsigned long mem,
if (!np->type)
np->type = "<NULL>";
}
while (tag == OF_DT_BEGIN_NODE) {
mem = unflatten_dt_node(mem, p, np, allnextpp, fpsize);
while (tag == OF_DT_BEGIN_NODE || tag == OF_DT_NOP) {
if (tag == OF_DT_NOP)
*p += 4;
else
mem = unflatten_dt_node(mem, p, np, allnextpp, fpsize);
tag = be32_to_cpup((__be32 *)(*p));
}
if (tag != OF_DT_END_NODE) {