From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from relay6-d.mail.gandi.net (relay6-d.mail.gandi.net [217.70.183.198]) (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 AD64520A5DB for ; Fri, 21 Feb 2025 13:59:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.70.183.198 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1740146395; cv=none; b=fSCwR1qJDd3k6CTpy3enjJIwLcC7f00M33e3Cnp5tAPNvfvnHyH11R4rP3BQXnvyr6pirGu0gUa1Xe5xwBwXHpeo5UDpabjfcR0NdJdSNDvNKn29/8hFN1SRypL2LOm+o6eoRCEGoYDmkfsMkNepbXHz344NNKXDOip+8+YvGxc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1740146395; c=relaxed/simple; bh=jPzBuw9UsBe99nwjSVKxaFyXXJIsLlYuHr4g0n0BOKE=; h=From:To:Cc:Subject:In-Reply-To:References:Date:Message-ID: MIME-Version:Content-Type; b=pV4SVa+lWiFXumR6UwFSWTzux/vSRPUigvKbYDxF5L9dEV8ssCSr+p9dWTHkL3Mzln06hVui45zD8pjopsx/amUY+vPMZWddBBBtcuNuOQUFn92vzXd3SbQ2vOgCgMoW37yr0Ag6yFjd4W6Ui2bspe9UgACjdHtHcwNgFJl7v6w= 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=J+B8ftd8; arc=none smtp.client-ip=217.70.183.198 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="J+B8ftd8" 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> 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