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Date: Tue, 9 Mar 2010 12:30:21 -0700
From: Jason Gunthorpe <jgunthorpe@...idianresearch.com>
To: linuxppc-dev@...abs.org
Cc: linux-kernel@...r.kernel.org
Subject: [PATCH] PPC: Skip over OF_DT_NOP 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@...idianresearch.com>
---
arch/powerpc/kernel/prom.c | 7 +++++--
1 files changed, 5 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
index 4ec3008..92137b2 100644
--- a/arch/powerpc/kernel/prom.c
+++ b/arch/powerpc/kernel/prom.c
@@ -408,8 +408,11 @@ static 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 = *((u32 *)(*p));
}
if (tag != OF_DT_END_NODE) {
--
1.5.4.2
--
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