From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 7AAB3C021B3 for ; Fri, 21 Feb 2025 14:00:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-ID:Date:References :In-Reply-To:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=3KooWKgJGwm+3Qrcpp3aEBCSACibofEuaIWNTPzV4Ac=; b=1CNXvNdGd76Ve9 vFunGqVv1W9JwgXIXdsTRh3P1uRAUZq75khiTfMQPQoDrh2o+XKb3FIhUvOL0CohznnMjaOOHBC8Q tL238aSBHKuy2EGQvnij9tkOMUK396J6nHwdH7SgGa7gf5vQWp3Dl33TGqxX13oyazhLne42CWIh1 YfnGSCOc++D3+0a7NFDVNVzzXSB2w6mlyaR+hmxTEn0Whl9goDkQPztzcTjbsky2Nn6kdeHsCK3f4 KL6htzGdClTorCUmuGhMEIAszM7FqM4rn+SLsyM3/4Vk2246M0ZpbPIaRjMCD5zvBPfC+yGUsUyK8 qrbX2lYOB4ceUqNGZ5qg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tlTZR-00000005jG1-0iQR; Fri, 21 Feb 2025 14:00:01 +0000 Received: from relay6-d.mail.gandi.net ([2001:4b98:dc4:8::226]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tlTZN-00000005jDc-00Ib for linux-mtd@lists.infradead.org; Fri, 21 Feb 2025 13:59:59 +0000 Received: by mail.gandi.net (Postfix) with ESMTPSA id C2BAA44275; Fri, 21 Feb 2025 13:59:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1740146390; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=jPzBuw9UsBe99nwjSVKxaFyXXJIsLlYuHr4g0n0BOKE=; b=J+B8ftd8W/uUKRzfNpEGZm82vjg0m+a7zbdrRQIrI4q7z/IKhcDSBhL9AEAyNvx3dVt6KF AncIKgxMQOzO7iz8vsWqlnp2DrescSnIRGgfumgU33fO7MTGaJUKJDtG8vAns90AAATKE+ uXJLU/rGzv8tVMQWK5UpwRrVqhVq0heHpeWaHqemC5kegbOCmvByaDBF9Kl3h6b7q9yKx3 EM0kxekr+X83CrbE+uRMZDSm05Ufl+dRDzNdzN00TIzfbN7eqVjrPQqUDPwX4vPb9lqqQx Hey9efkSdK+2h8ou28EyjmZ8wYqAoXpPNmP2dkA3Ld0orMADdqRgFGaBDFJO8w== From: Miquel Raynal To: Cheng Ming Lin Cc: vigneshr@ti.com, linux-mtd@lists.infradead.org, linux-kernel@vger.kernel.org, richard@nod.at, alvinzhou@mxic.com.tw, leoyu@mxic.com.tw, Cheng Ming Lin Subject: Re: [PATCH v4 0/2] Add support for read retry In-Reply-To: <20250221093300.430994-1-linchengming884@gmail.com> (Cheng Ming Lin's message of "Fri, 21 Feb 2025 17:32:58 +0800") References: <20250221093300.430994-1-linchengming884@gmail.com> User-Agent: mu4e 1.12.7; emacs 29.4 Date: Fri, 21 Feb 2025 14:59:49 +0100 Message-ID: <87r03rfley.fsf@bootlin.com> MIME-Version: 1.0 X-GND-State: clean X-GND-Score: -100 X-GND-Cause: gggruggvucftvghtrhhoucdtuddrgeefvddrtddtgdejtddvvdcutefuodetggdotefrodftvfcurfhrohhfihhlvgemucfitefpfffkpdcuggftfghnshhusghstghrihgsvgenuceurghilhhouhhtmecufedtudenucesvcftvggtihhpihgvnhhtshculddquddttddmnecujfgurhephffvvefujghffgffkfggtgfgsehtqhertddtreejnecuhfhrohhmpefoihhquhgvlhcutfgrhihnrghluceomhhiqhhuvghlrdhrrgihnhgrlhessghoohhtlhhinhdrtghomheqnecuggftrfgrthhtvghrnhepffeghfejtdefieeguddukedujeektdeihfelleeuieeuveehkedvleduheeivdefnecukfhppeeltddrkeelrdduieefrdduvdejnecuvehluhhsthgvrhfuihiivgeptdenucfrrghrrghmpehinhgvthepledtrdekledrudeifedruddvjedphhgvlhhopehlohgtrghlhhhoshhtpdhmrghilhhfrhhomhepmhhiqhhuvghlrdhrrgihnhgrlhessghoohhtlhhinhdrtghomhdpnhgspghrtghpthhtohepkedprhgtphhtthhopehlihhntghhvghnghhmihhnghekkeegsehgmhgrihhlrdgtohhmpdhrtghpthhtohepvhhighhnvghshhhrsehtihdrtghomhdprhgtphhtthhopehlihhnuhigqdhmthgusehlihhsthhsrdhinhhfrhgruggvrggurdhorhhgpdhrtghpthhtoheplhhinhhugidqkhgvrhhnvghlsehvghgvrhdrkhgvrhhnvghlrdhorhhgpdhrtghpthhtoheprhhitghhrghrugesnhhougdrrghtp dhrtghpthhtoheprghlvhhinhiihhhouhesmhigihgtrdgtohhmrdhtfidprhgtphhtthhopehlvghohihusehmgihitgdrtghomhdrthifpdhrtghpthhtoheptghhvghnghhmihhnghhlihhnsehmgihitgdrtghomhdrthif X-GND-Sasl: miquel.raynal@bootlin.com X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250221_055957_812052_05B78409 X-CRM114-Status: UNSURE ( 8.23 ) X-CRM114-Notice: Please train this message. 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emacs 29.4 Date: Fri, 21 Feb 2025 14:59:49 +0100 Message-ID: <87r03rfley.fsf@bootlin.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-GND-State: clean X-GND-Score: -100 X-GND-Cause: gggruggvucftvghtrhhoucdtuddrgeefvddrtddtgdejtddvvdcutefuodetggdotefrodftvfcurfhrohhfihhlvgemucfitefpfffkpdcuggftfghnshhusghstghrihgsvgenuceurghilhhouhhtmecufedtudenucesvcftvggtihhpihgvnhhtshculddquddttddmnecujfgurhephffvvefujghffgffkfggtgfgsehtqhertddtreejnecuhfhrohhmpefoihhquhgvlhcutfgrhihnrghluceomhhiqhhuvghlrdhrrgihnhgrlhessghoohhtlhhinhdrtghomheqnecuggftrfgrthhtvghrnhepffeghfejtdefieeguddukedujeektdeihfelleeuieeuveehkedvleduheeivdefnecukfhppeeltddrkeelrdduieefrdduvdejnecuvehluhhsthgvrhfuihiivgeptdenucfrrghrrghmpehinhgvthepledtrdekledrudeifedruddvjedphhgvlhhopehlohgtrghlhhhoshhtpdhmrghilhhfrhhomhepmhhiqhhuvghlrdhrrgihnhgrlhessghoohhtlhhinhdrtghomhdpnhgspghrtghpthhtohepkedprhgtphhtthhopehlihhntghhvghnghhmihhnghekkeegsehgmhgrihhlrdgtohhmpdhrtghpthhtohepvhhighhnvghshhhrsehtihdrtghomhdprhgtphhtthhopehlihhnuhigqdhmthgusehlihhsthhsrdhinhhfrhgruggvrggurdhorhhgpdhrtghpthhtoheplhhinhhugidqkhgvrhhnvghlsehvghgvrhdrkhgvrhhnvghlrdhorhhgpdhrtghpthhtoheprhhitghhrghrugesnhhougdrrghtp dhrtghpthhtoheprghlvhhinhiihhhouhesmhigihgtrdgtohhmrdhtfidprhgtphhtthhopehlvghohihusehmgihitgdrtghomhdrthifpdhrtghpthhtoheptghhvghnghhmihhnghhlihhnsehmgihitgdrtghomhdrthif X-GND-Sasl: miquel.raynal@bootlin.com Hello, On 21/02/2025 at 17:32:58 +08, Cheng Ming Lin w= rote: > From: Cheng Ming Lin > > When the host ECC fails to correct the data error of NAND device, > there's a special read for data recovery method which can be setup > by the host for the next read. There are several retry levels that > can be attempted until the lost data is recovered or definitely > assumed lost. I am sorry but you need to rebase on latest -rc1 or maybe even nand/next because it does not apply. Thanks, Miqu=C3=A8l