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GET /api/patches/2216533/?format=api
{ "id": 2216533, "url": "http://patchwork.ozlabs.org/api/patches/2216533/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-mtd/patch/20260326-winbond-v7-0-rc1-cadence-cont-read-v1-2-0d626e1dfb2b@bootlin.com/", "project": { "id": 3, "url": "http://patchwork.ozlabs.org/api/projects/3/?format=api", "name": "Linux MTD development", "link_name": "linux-mtd", "list_id": "linux-mtd.lists.infradead.org", "list_email": "linux-mtd@lists.infradead.org", "web_url": null, "scm_url": null, "webscm_url": null, "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260326-winbond-v7-0-rc1-cadence-cont-read-v1-2-0d626e1dfb2b@bootlin.com>", "list_archive_url": null, "date": "2026-03-26T16:47:16", "name": "[2/4] mtd: spinand: Make sure continuous read is always disabled during probe", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "941811abf2662f7982e5c2a402c325d7af478618", "submitter": { "id": 73368, "url": "http://patchwork.ozlabs.org/api/people/73368/?format=api", "name": "Miquel Raynal", "email": "miquel.raynal@bootlin.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linux-mtd/patch/20260326-winbond-v7-0-rc1-cadence-cont-read-v1-2-0d626e1dfb2b@bootlin.com/mbox/", "series": [ { "id": 497624, "url": "http://patchwork.ozlabs.org/api/series/497624/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-mtd/list/?series=497624", "date": "2026-03-26T16:47:14", "name": "spi: spi-mem/mtd: spinand: Prevent SPI NAND continuous reads on am65/am62", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/497624/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2216533/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2216533/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "\n <linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org>", "X-Original-To": "incoming@patchwork.ozlabs.org", "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n secure) header.d=lists.infradead.org header.i=@lists.infradead.org\n header.a=rsa-sha256 header.s=bombadil.20210309 header.b=jDpNJGls;\n\tdkim=fail reason=\"signature verification failed\" (2048-bit key;\n unprotected) header.d=bootlin.com header.i=@bootlin.com header.a=rsa-sha256\n header.s=dkim header.b=bQOKsQ6Q;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=none (no SPF record) smtp.mailfrom=lists.infradead.org\n (client-ip=2607:7c80:54:3::133; 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a=rsa-sha256; q=dns/txt; c=relaxed/relaxed;\n\td=lists.infradead.org; s=bombadil.20210309; h=Sender:\n\tContent-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post:\n\tList-Archive:List-Unsubscribe:List-Id:Cc:To:In-Reply-To:References:Message-Id\n\t:MIME-Version:Subject:Date:From:Reply-To:Content-ID:Content-Description:\n\tResent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:\n\tList-Owner; bh=gI+tFboTztL2QQEu8THlN7aB5Ee8HaVIT3Z20yEi28Y=; b=jDpNJGlsbZPMDW\n\tqycPYjcnddjZp8Hwn4XHsROtt9nENnYt923rsnYouG5C99A/PA5JedVx2ML0Dco1G729Wsbl4QwqO\n\tH2biauK5aSrPtn4Nixr3wWKqlVtFVQ54aRnakzHiEcGTwZlxK3dVNS8XlMuc7Fzq8QJuVgetIbME2\n\t8kwSBkxdpYU1g4M9oZlSBGz4Ydw3MKqIeTsmbOgTKrvPvtCf1bP8p4ZB3CTQ4GTMV4AQYUkmVYb+S\n\tSQNJtuD1FoU0goRfYaJxHSpst2klkS28PAWcEbKXys37O6D9odKaJ2QOmWqXrKEeEG96dnJ1Rjkg3\n\t91JZXl6/SCFdnz9X58wQ==;", "v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=dkim;\n\tt=1774543651; h=from:subject:date:message-id:to:cc:mime-version:content-type:\n\t content-transfer-encoding:in-reply-to:references;\n\tbh=MfQsMH01sC5rcQAhuynCASMmcusHRJHKOUkM0tEs7+Q=;\n\tb=bQOKsQ6QTW6zY4tZTrGpyVQNdfcQexSG6TnhZ+zsTd6oLFowicJL6Uc9KJPg2OPWnH8XDK\n\t0bd8kf+aW3ynhcZE04MNOjmEr1j5A2OfDRDtZAJ9ychAiaNivK3EHHkEC0OMlhCAbC1hK2\n\tGlKJ1VaPvFIelUPP0Z8rsC0WKXOzwPj8QkBtnUwyB5XZL9xsWTG/C1UPWZ0s2QyXxLJYUT\n\t8aasrM3+sL3r0eIUBpYxts+66K98YnpxC5Qb52/wDjnec4U7cxNn+osSAysBYnGWQBQWY5\n\tLdQkBVFRRdDvtt6RXhXh/jDmEnpbJcmbD8TJaZfN+GyjM55kXDog9oBwXCXlIA==" ], "From": "Miquel Raynal <miquel.raynal@bootlin.com>", "Date": "Thu, 26 Mar 2026 17:47:16 +0100", "Subject": "[PATCH 2/4] mtd: spinand: Make sure continuous read is always\n disabled during probe", "MIME-Version": "1.0", "Message-Id": "\n <20260326-winbond-v7-0-rc1-cadence-cont-read-v1-2-0d626e1dfb2b@bootlin.com>", "References": "\n <20260326-winbond-v7-0-rc1-cadence-cont-read-v1-0-0d626e1dfb2b@bootlin.com>", "In-Reply-To": "\n <20260326-winbond-v7-0-rc1-cadence-cont-read-v1-0-0d626e1dfb2b@bootlin.com>", "To": "Mark Brown <broonie@kernel.org>, Richard Weinberger <richard@nod.at>,\n Vignesh Raghavendra <vigneshr@ti.com>", "Cc": "Thomas Petazzoni <thomas.petazzoni@bootlin.com>,\n linux-spi@vger.kernel.org, linux-kernel@vger.kernel.org,\n linux-mtd@lists.infradead.org, Michael Walle <mwalle@kernel.org>,\n Takahiro Kuwano <takahiro.kuwano@infineon.com>,\n Pratyush Yadav <pratyush@kernel.org>, Steam Lin <STLin2@winbond.com>,\n Santhosh Kumar K <s-k6@ti.com>, Miquel Raynal <miquel.raynal@bootlin.com>", "X-Mailer": "b4 0.14.3", "X-Last-TLS-Session-Version": "TLSv1.3", "X-CRM114-Version": "20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 ", "X-CRM114-CacheID": "sfid-20260326_094734_120830_46601E48 ", "X-CRM114-Status": "GOOD ( 15.00 )", "X-Spam-Score": "-2.1 (--)", "X-Spam-Report": "Spam detection software,\n running on the system \"bombadil.infradead.org\",\n has NOT identified this incoming email as spam. The original\n message has been attached to this so you can view it or label\n similar future email. If you have any questions, see\n the administrator of that system for details.\n Content preview: Recent changes made sure whenever we were using continuous\n reads,\n we would first start by disabling the feature to ensure a well proven\n and stable probe sequence. For development purposes, it might al [...]\n Content analysis details: (-2.1 points, 5.0 required)\n pts rule name description\n ---- ----------------------\n --------------------------------------------------\n 0.0 RCVD_IN_VALIDITY_RPBL_BLOCKED RBL: ADMINISTRATOR NOTICE: The query to\n Validity was blocked. See\n https://knowledge.validity.com/hc/en-us/articles/20961730681243\n for more information.\n [185.246.85.4 listed in bl.score.senderscore.com]\n 0.0 RCVD_IN_VALIDITY_CERTIFIED_BLOCKED RBL: ADMINISTRATOR NOTICE: The\n query to Validity was blocked. See\n https://knowledge.validity.com/hc/en-us/articles/20961730681243\n for more information.\n [185.246.85.4 listed in\n sa-trusted.bondedsender.org]\n 0.0 RCVD_IN_VALIDITY_SAFE_BLOCKED RBL: ADMINISTRATOR NOTICE: The query to\n Validity was blocked. See\n https://knowledge.validity.com/hc/en-us/articles/20961730681243\n for more information.\n [185.246.85.4 listed in sa-accredit.habeas.com]\n -0.0 SPF_HELO_PASS SPF: HELO matches SPF record\n -0.0 SPF_PASS SPF: sender matches SPF record\n -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from\n author's\n domain\n -0.1 DKIM_VALID Message has at least one valid DKIM or DK\n signature\n -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from\n envelope-from domain\n 0.1 DKIM_SIGNED Message has a DKIM or DK signature,\n not necessarily valid\n -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1%\n [score: 0.0000]", "X-BeenThere": "linux-mtd@lists.infradead.org", "X-Mailman-Version": "2.1.34", "Precedence": "list", "List-Id": "Linux MTD discussion mailing list <linux-mtd.lists.infradead.org>", "List-Unsubscribe": "<http://lists.infradead.org/mailman/options/linux-mtd>,\n <mailto:linux-mtd-request@lists.infradead.org?subject=unsubscribe>", "List-Archive": "<http://lists.infradead.org/pipermail/linux-mtd/>", "List-Post": "<mailto:linux-mtd@lists.infradead.org>", "List-Help": "<mailto:linux-mtd-request@lists.infradead.org?subject=help>", "List-Subscribe": "<http://lists.infradead.org/mailman/listinfo/linux-mtd>,\n <mailto:linux-mtd-request@lists.infradead.org?subject=subscribe>", "Content-Type": "text/plain; charset=\"us-ascii\"", "Content-Transfer-Encoding": "7bit", "Sender": "\"linux-mtd\" <linux-mtd-bounces@lists.infradead.org>", "Errors-To": "linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org" }, "content": "Recent changes made sure whenever we were using continuous reads, we\nwould first start by disabling the feature to ensure a well proven and\nstable probe sequence. For development purposes, it might also matter to\nmake sure we always disable continuous reads at first, in case the ECC\nconfiguration would change. Doing this \"automatically\" will become even\nmore relevant when we add extra controller flags to prevent continuous\nreads at all.\n\nEnsure we disable continuous reads if the feature is available on the\nchip, regardless of whether it will be used or not.\n\nSigned-off-by: Miquel Raynal <miquel.raynal@bootlin.com>\n---\n drivers/mtd/nand/spi/core.c | 10 +++++-----\n 1 file changed, 5 insertions(+), 5 deletions(-)", "diff": "diff --git a/drivers/mtd/nand/spi/core.c b/drivers/mtd/nand/spi/core.c\nindex 45c3afb9cceb..dbe2c463fe01 100644\n--- a/drivers/mtd/nand/spi/core.c\n+++ b/drivers/mtd/nand/spi/core.c\n@@ -953,11 +953,7 @@ static void spinand_cont_read_init(struct spinand_device *spinand)\n \tenum nand_ecc_engine_type engine_type = nand->ecc.ctx.conf.engine_type;\n \n \t/* OOBs cannot be retrieved so external/on-host ECC engine won't work */\n-\tif (spinand->set_cont_read &&\n-\t (engine_type == NAND_ECC_ENGINE_TYPE_ON_DIE ||\n-\t engine_type == NAND_ECC_ENGINE_TYPE_NONE)) {\n-\t\tspinand->cont_read_possible = true;\n-\n+\tif (spinand->set_cont_read) {\n \t\t/*\n \t\t * Ensure continuous read is disabled on probe.\n \t\t * Some devices retain this state across soft reset,\n@@ -965,6 +961,10 @@ static void spinand_cont_read_init(struct spinand_device *spinand)\n \t\t * in false positive returns from spinand_isbad().\n \t\t */\n \t\tspinand_cont_read_enable(spinand, false);\n+\n+\t\tif (engine_type == NAND_ECC_ENGINE_TYPE_ON_DIE ||\n+\t\t engine_type == NAND_ECC_ENGINE_TYPE_NONE)\n+\t\t\tspinand->cont_read_possible = true;\n \t}\n }\n \n", "prefixes": [ "2/4" ] }