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From: Herve Codina <herve.codina@bootlin.com>
To: David Gibson <david@gibson.dropbear.id.au>,
	Rob Herring <robh@kernel.org>,
	Krzysztof Kozlowski <krzk@kernel.org>,
	Conor Dooley <conor+dt@kernel.org>
Cc: Ayush Singh <ayush@beagleboard.org>,
	Geert Uytterhoeven <geert@linux-m68k.org>,
	devicetree-compiler@vger.kernel.org, devicetree@vger.kernel.org,
	linux-kernel@vger.kernel.org, devicetree-spec@vger.kernel.org,
	Hui Pu <hui.pu@gehealthcare.com>,
	Ian Ray <ian.ray@gehealthcare.com>,
	Luca Ceresoli <luca.ceresoli@bootlin.com>,
	Thomas Petazzoni <thomas.petazzoni@bootlin.com>,
	Herve Codina <herve.codina@bootlin.com>
Subject: [RFC PATCH 03/15] fdtdump: Return an error code on wrong tag value
Date: Tue, 10 Feb 2026 18:33:31 +0100	[thread overview]
Message-ID: <20260210173349.636766-4-herve.codina@bootlin.com> (raw)
In-Reply-To: <20260210173349.636766-1-herve.codina@bootlin.com>

fdtdump prints a message on stderr when it encounters a wrong tag and
stop its processing without returning an error code.

Having a wrong tag is really a failure. Indeed, the processing cannot
continue.

Be more strict. Stop the processing, print a message and return an
error code. In other words, call die().

Signed-off-by: Herve Codina <herve.codina@bootlin.com>
---
 fdtdump.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/fdtdump.c b/fdtdump.c
index 6c9ad90..0e7a265 100644
--- a/fdtdump.c
+++ b/fdtdump.c
@@ -146,8 +146,7 @@ static void dump_blob(void *blob, bool debug)
 			continue;
 		}
 
-		fprintf(stderr, "%*s ** Unknown tag 0x%08"PRIx32"\n", depth * shift, "", tag);
-		break;
+		die("** Unknown tag 0x%08"PRIx32"\n", tag);
 	}
 }
 
-- 
2.52.0


  parent reply	other threads:[~2026-02-10 17:34 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-02-10 17:33 [RFC PATCH 00/15] Add support for structured tags and v18 dtb version Herve Codina
2026-02-10 17:33 ` [RFC PATCH 01/15] dtc: Use a consistent type for basenamelen Herve Codina
2026-02-13  6:14   ` David Gibson
2026-02-10 17:33 ` [RFC PATCH 02/15] fdtdump: Remove dtb version check Herve Codina
2026-02-14  2:12   ` David Gibson
2026-02-10 17:33 ` Herve Codina [this message]
2026-02-23  5:38   ` [RFC PATCH 03/15] fdtdump: Return an error code on wrong tag value David Gibson
2026-02-23  8:39     ` Herve Codina
2026-02-24  5:57       ` David Gibson
2026-02-10 17:33 ` [RFC PATCH 04/15] libfdt: fdt_rw: Introduce fdt_downgrade_version() Herve Codina
2026-02-24  6:09   ` David Gibson
2026-02-10 17:33 ` [RFC PATCH 05/15] libfdt: Introduce fdt_first_node() Herve Codina
2026-02-10 17:33 ` [RFC PATCH 06/15] libfdt: Don't assume that a FDT_BEGIN_NODE tag is available at offset 0 Herve Codina
2026-02-10 17:33 ` [RFC PATCH 07/15] libfdt: fdt_check_full: Handle FDT_NOP when FDT_END is expected Herve Codina
2026-03-04 10:08   ` David Gibson
2026-02-10 17:33 ` [RFC PATCH 08/15] tests: asm: Introduce treehdr_vers macro Herve Codina
2026-02-10 17:33 ` [RFC PATCH 09/15] Introduce structured tag value definition Herve Codina
2026-02-10 17:33 ` [RFC PATCH 10/15] fdtdump: Handle unknown tags Herve Codina
2026-02-10 17:33 ` [RFC PATCH 11/15] flattree: " Herve Codina
2026-02-10 17:33 ` [RFC PATCH 12/15] libfdt: Handle unknown tags in fdt_get_next() Herve Codina
2026-02-10 17:33 ` [RFC PATCH 13/15] libfdt: Introduce fdt_ptr_offset_ Herve Codina
2026-02-10 17:33 ` [RFC PATCH 14/15] libfdt: Handle unknown tags on dtb modifications Herve Codina
2026-02-10 17:33 ` [RFC PATCH 15/15] Introduce v18 dtb version Herve Codina
2026-03-12  7:54 ` [RFC PATCH 00/15] Add support for structured tags and " Herve Codina
2026-03-12 10:21   ` David Gibson
2026-03-16 16:16     ` Herve Codina

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