From nobody Fri Apr 3 14:17:42 2026 Received: from smtpout-04.galae.net (smtpout-04.galae.net [185.171.202.116]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id ED5F23E5588 for ; Tue, 17 Mar 2026 14:25:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.171.202.116 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773757510; cv=none; b=VRCna+7shmR95G80y5xb+/079KA16Q+4K50vz68ADkLoJwqZzcHcH9OWCXMr9ZwO/sE4E08Tn4mhuqC0FaWfaCEtcsfM3ceHQORH4ej2/CwP7vB1SJxocQiyWG8K8Hx3+CiHrvJcWoTJj6ISvjEgjI92ty2zWoPr47byGYisi9I= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773757510; c=relaxed/simple; bh=DJAzBHsTjBw4oM+pSBR4bqr3HXDHu7NQIDcmq6+PG/s=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=S9PoD0aQRkEVBeNbL3uKxVgK85z/MIUjZNFnLJCYoc25H2lWtCtlarDluUpp+mPUMfr6i2gzHBv8MPm9Evytb1eyTKQV6UdVJWYyYM5uf0V1MgraCNMuJuh7mXDe4elk87+/PBEKYycbZcn8lFG7vc6UQvwgVtC8yEbD+39FDB0= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com; spf=pass smtp.mailfrom=bootlin.com; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b=ykjH+AOn; arc=none smtp.client-ip=185.171.202.116 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=bootlin.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b="ykjH+AOn" Received: from smtpout-01.galae.net (unknown [212.83.139.233]) by smtpout-04.galae.net (Postfix) with ESMTPS id 5C658C55071; Tue, 17 Mar 2026 14:25:28 +0000 (UTC) Received: from mail.galae.net (mail.galae.net [212.83.136.155]) by smtpout-01.galae.net (Postfix) with ESMTPS id 4C6E85FC9A; Tue, 17 Mar 2026 14:24:54 +0000 (UTC) Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id 88C56104505FC; Tue, 17 Mar 2026 15:24:51 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=dkim; t=1773757493; h=from:subject:date:message-id:to:cc:mime-version: content-transfer-encoding:in-reply-to:references; bh=cDyw0VT/gRD0S6ZYgJzuggHzvkdYaJdJvFIQKhQJvv0=; b=ykjH+AOnDg0Ovh6NMWJk9k7DZ654ToPDcrq+hyh1JORlcjPV2LoEMIc3w0foci1lA9pDVB HII+BNkTM3RV6/I447xNxK5lrgaYlNF9RBmIIzD0WZEu3iDZLYVAEBYFkuvFSkLERy/1Q5 /rxyx3ComX+XAJ+H0usyV7J4RW6z5AF9Yz5MWUVsxex71ad0K+0LY0t9lXFpX28ztN6RhV rwI9/D87m7E50FmmM8Y4n1/OiawVR/MkoaTMnNtBRYS8FBKJKF4k3q9ae+TN6YPoePhs4C h1na2Qa2d51Rbbi3BLSGMyNvSoCW8g9FR9PW6/fxFva7YHH1AuIsQgrMx2sjJQ== From: Richard Genoud To: Miquel Raynal , Richard Weinberger , Vignesh Raghavendra , Chen-Yu Tsai , Jernej Skrabec , Samuel Holland Cc: Wentao Liang , Maxime Ripard , Boris Brezillon , Thomas Petazzoni , linux-mtd@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-sunxi@lists.linux.dev, linux-kernel@vger.kernel.org, Richard Genoud Subject: [PATCH v3 2/9] mtd: rawnand: sunxi: fix sunxi_nfc_hw_ecc_read_extra_oob Date: Tue, 17 Mar 2026 15:24:30 +0100 Message-ID: <20260317142437.580204-3-richard.genoud@bootlin.com> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260317142437.580204-1-richard.genoud@bootlin.com> References: <20260317142437.580204-1-richard.genoud@bootlin.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Last-TLS-Session-Version: TLSv1.3 Content-Type: text/plain; charset="utf-8" When dumping the OOB, the bytes at the end where actually copied from the beginning of the OOB instead of current_offset. That leads to something like: OOB: ff ff ff ff ff ff ff ff ea 19 00 3a 83 db aa 8d OOB: 99 09 c8 9a 90 36 35 7d aa 15 13 07 3d 97 b2 a4 OOB: a8 bb 19 b3 07 e9 f6 25 52 d7 1a 23 e2 7e 0a e4 OOB: 52 8a 09 d2 1a 86 3d cf b4 99 43 13 d3 90 33 0b OOB: ff ff ff ff ff ff ff ff ea 19 00 3a 83 db aa 8d OOB: 99 09 c8 9a 90 36 35 7d aa 15 13 07 3d 97 b2 a4 OOB: a8 bb 19 b3 07 e9 f6 25 52 d7 1a 23 e2 7e 0a e4 OOB: 52 8a 09 d2 1a 86 3d cf b4 99 43 13 d3 90 33 0b instead of: OOB: ff ff ff ff ff ff ff ff ea 19 00 3a 83 db aa 8d OOB: 99 09 c8 9a 90 36 35 7d aa 15 13 07 3d 97 b2 a4 OOB: a8 bb 19 b3 07 e9 f6 25 52 d7 1a 23 e2 7e 0a e4 OOB: 52 8a 09 d2 1a 86 3d cf b4 99 43 13 d3 90 33 0b OOB: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff OOB: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff OOB: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff OOB: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff (example with BCH16, user data [8,0], no scrambling) *cur_off (offset from the beginning of the page) was compared to offset (offset from the beginning of the OOB), and then, the nand_change_read_column_op() sets the current position to the beginning of the OOB instead of OOB+offset Fixes: 15d6f118285f ("mtd: rawnand: sunxi: Stop supporting ECC_HW_SYNDROME = mode") Reviewed-by: Jernej Skrabec Signed-off-by: Richard Genoud --- drivers/mtd/nand/raw/sunxi_nand.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/mtd/nand/raw/sunxi_nand.c b/drivers/mtd/nand/raw/sunxi= _nand.c index 915f1240546f..8af449e548d4 100644 --- a/drivers/mtd/nand/raw/sunxi_nand.c +++ b/drivers/mtd/nand/raw/sunxi_nand.c @@ -1048,9 +1048,9 @@ static void sunxi_nfc_hw_ecc_read_extra_oob(struct na= nd_chip *nand, if (len <=3D 0) return; =20 - if (!cur_off || *cur_off !=3D offset) - nand_change_read_column_op(nand, mtd->writesize, NULL, 0, - false); + if (!cur_off || *cur_off !=3D (offset + mtd->writesize)) + nand_change_read_column_op(nand, mtd->writesize + offset, + NULL, 0, false); =20 if (!randomize) sunxi_nfc_read_buf(nand, oob + offset, len);