From patchwork Mon Feb 17 15:54:12 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Frieder Schrempf X-Patchwork-Id: 1239347 X-Patchwork-Delegate: miquel.raynal@bootlin.com Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (no SPF record) smtp.mailfrom=lists.infradead.org (client-ip=2607:7c80:54:e::133; helo=bombadil.infradead.org; envelope-from=linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=kontron.de Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=lists.infradead.org header.i=@lists.infradead.org header.a=rsa-sha256 header.s=bombadil.20170209 header.b=exEcAdtW; dkim-atps=neutral Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:e::133]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 48LpTM20J0z9sRG for ; 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Mon, 17 Feb 2020 15:54:27 +0000 Received: from skedge03.snt-world.com ([91.208.41.68]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1j3iis-0007GO-RO for linux-mtd@lists.infradead.org; Mon, 17 Feb 2020 15:54:16 +0000 Received: from sntmail11s.snt-is.com (unknown [10.203.32.181]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by skedge03.snt-world.com (Postfix) with ESMTPS id EABA767AB40; Mon, 17 Feb 2020 16:54:12 +0100 (CET) Received: from sntmail12r.snt-is.com (10.203.32.182) by sntmail11s.snt-is.com (10.203.32.181) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1913.5; Mon, 17 Feb 2020 16:54:12 +0100 Received: from sntmail12r.snt-is.com ([fe80::e551:8750:7bba:3305]) by sntmail12r.snt-is.com ([fe80::e551:8750:7bba:3305%3]) with mapi id 15.01.1913.005; Mon, 17 Feb 2020 16:54:12 +0100 From: Schrempf Frieder To: Boris Brezillon , Schrempf Frieder , Jeff Kletsky , liaoweixiong , Miquel Raynal Subject: [PATCH v2 3/3] mtd: spinand: Don not erase the block before writing a bad block marker Thread-Topic: [PATCH v2 3/3] mtd: spinand: Don not erase the block before writing a bad block marker Thread-Index: AQHV5ap/saRAn1//VEmaJshNaD42IA== Date: Mon, 17 Feb 2020 15:54:12 +0000 Message-ID: <20200217155213.5594-4-frieder.schrempf@kontron.de> References: <20200217155213.5594-1-frieder.schrempf@kontron.de> In-Reply-To: <20200217155213.5594-1-frieder.schrempf@kontron.de> Accept-Language: de-DE, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-mailer: git-send-email 2.17.1 x-originating-ip: [172.25.9.193] x-c2processedorg: 51b406b7-48a2-4d03-b652-521f56ac89f3 MIME-Version: 1.0 X-SnT-MailScanner-Information: Please contact the ISP for more information X-SnT-MailScanner-ID: EABA767AB40.A1FAB X-SnT-MailScanner: Not scanned: please contact your Internet E-Mail Service Provider for details X-SnT-MailScanner-SpamCheck: X-SnT-MailScanner-From: frieder.schrempf@kontron.de X-SnT-MailScanner-To: bbrezillon@kernel.org, git-commits@allycomm.com, liaoweixiong@allwinnertech.com, linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org, miquel.raynal@bootlin.com, richard@nod.at, stable@vger.kernel.org X-Spam-Status: No X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200217_075415_238036_174AFDE6 X-CRM114-Status: GOOD ( 12.83 ) X-Spam-Score: -0.7 (/) X-Spam-Report: SpamAssassin version 3.4.3 on bombadil.infradead.org summary: Content analysis details: (-0.7 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at https://www.dnswl.org/, low trust [91.208.41.68 listed in list.dnswl.org] 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Richard Weinberger , "linux-mtd@lists.infradead.org" , "linux-kernel@vger.kernel.org" , "stable@vger.kernel.org" Sender: "linux-mtd" Errors-To: linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org From: Frieder Schrempf Currently when marking a block, we use spinand_erase_op() to erase the block before writing the marker to the OOB area. Doing so without waiting for the operation to finish can lead to the marking failing silently and no bad block marker being written to the flash. In fact we don't need to do an erase at all before writing the BBM. The ECC is disabled for the raw access to the OOB data and we don't need to work around any issues with chips reporting ECC errors as it is known to be the case for raw NAND. Fixes: 7529df465248 ("mtd: nand: Add core infrastructure to support SPI NANDs") Cc: stable@vger.kernel.org Signed-off-by: Frieder Schrempf Reviewed-by: Boris Brezillon --- Changes in v2: * Instead of waiting for the erase operation to finish, just don't do an erase at all, as it is not needed. * Update the commit message --- drivers/mtd/nand/spi/core.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/drivers/mtd/nand/spi/core.c b/drivers/mtd/nand/spi/core.c index a94287884453..8dda51bbdd11 100644 --- a/drivers/mtd/nand/spi/core.c +++ b/drivers/mtd/nand/spi/core.c @@ -613,7 +613,6 @@ static int spinand_markbad(struct nand_device *nand, const struct nand_pos *pos) }; int ret; - /* Erase block before marking it bad. */ ret = spinand_select_target(spinand, pos->target); if (ret) return ret; @@ -622,8 +621,6 @@ static int spinand_markbad(struct nand_device *nand, const struct nand_pos *pos) if (ret) return ret; - spinand_erase_op(spinand, pos); - return spinand_write_page(spinand, &req); }