dtc: Accept NOPs in dtb input regardless of version

Since Milton's patch, dtc will accept (and, correctly, ignore) NOP
tags when given dtb input v16 or later.  However, although NOPs
weren't defined in earlier versions, they're not ambiguous, so should
be accepted there as well.  This patch does so, printing a mere
warning when finding NOPs in a too-early dtb version.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

1 files changed, 4 insertions, 2 deletions

diff --git a/flattree.c b/flattree.c
index b802e2c..412177f 100644
--- a/flattree.c
+++ b/flattree.c
@@ -776,10 +776,12 @@ static struct node *unflatten_tree(struct inbuf *dtbuf,
 			break;
 
 		case OF_DT_NOP:
-			if (flags & FTF_NOPS)
+			if (!(flags & FTF_NOPS))
+				fprintf(stderr, "Warning: NOP tag found in flat tree"
+					" version <16\n");
 				break;
 
-			die("OF_DT_NOP in device tree blob\n");
+			/* Ignore */
 			break;
 
 		default: