From patchwork Fri Apr 26 09:08:49 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Huang Shijie X-Patchwork-Id: 239774 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:770:15f::2]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id 794312C00F6 for ; Fri, 26 Apr 2013 19:21:13 +1000 (EST) Received: from merlin.infradead.org ([2001:4978:20e::2]) by casper.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1UVepp-0001CK-Ai; Fri, 26 Apr 2013 09:20:53 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1UVepn-0005xT-5P; Fri, 26 Apr 2013 09:20:51 +0000 Received: from tx2ehsobe001.messaging.microsoft.com ([65.55.88.11] helo=tx2outboundpool.messaging.microsoft.com) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1UVepk-0005wa-HL for linux-mtd@lists.infradead.org; Fri, 26 Apr 2013 09:20:49 +0000 Received: from mail196-tx2-R.bigfish.com (10.9.14.246) by TX2EHSOBE015.bigfish.com (10.9.40.35) with Microsoft SMTP Server id 14.1.225.23; Fri, 26 Apr 2013 09:20:46 +0000 Received: from mail196-tx2 (localhost [127.0.0.1]) by mail196-tx2-R.bigfish.com (Postfix) with ESMTP id EF9F53E01EE; Fri, 26 Apr 2013 09:20:45 +0000 (UTC) X-Forefront-Antispam-Report: CIP:70.37.183.190; KIP:(null); UIP:(null); IPV:NLI; H:mail.freescale.net; RD:none; EFVD:NLI X-SpamScore: 3 X-BigFish: VS3(zzzz1f42h1fc6h1ee6h1de0h1fdah1202h1e76h1d1ah1d2ah1082kzz8275bhz2dh2a8h668h839hd24he5bhf0ah1288h12a5h12a9h12bdh12e5h137ah139eh13b6h1441h1504h1537h162dh1631h1758h1898h18e1h1946h19b5h1ad9h1b0ah1d0ch1155h) Received: from mail196-tx2 (localhost.localdomain [127.0.0.1]) by mail196-tx2 (MessageSwitch) id 1366968044112482_31394; Fri, 26 Apr 2013 09:20:44 +0000 (UTC) Received: from TX2EHSMHS014.bigfish.com (unknown [10.9.14.227]) by mail196-tx2.bigfish.com (Postfix) with ESMTP id 175B93C0045; Fri, 26 Apr 2013 09:20:44 +0000 (UTC) Received: from mail.freescale.net (70.37.183.190) by TX2EHSMHS014.bigfish.com (10.9.99.114) with Microsoft SMTP Server (TLS) id 14.1.225.23; Fri, 26 Apr 2013 09:20:43 +0000 Received: from az84smr01.freescale.net (10.64.34.197) by 039-SN1MMR1-002.039d.mgd.msft.net (10.84.1.15) with Microsoft SMTP Server (TLS) id 14.2.328.11; Fri, 26 Apr 2013 09:20:43 +0000 Received: from shlinux2.ap.freescale.net (shlinux2.ap.freescale.net [10.192.224.44]) by az84smr01.freescale.net (8.14.3/8.14.0) with ESMTP id r3Q9KZTc002714; Fri, 26 Apr 2013 02:20:40 -0700 From: Huang Shijie To: Subject: [PATCH V4 1/9] mtd: add more comment for ecc_strength/ecc_size Date: Fri, 26 Apr 2013 17:08:49 +0800 Message-ID: <1366967337-5534-2-git-send-email-b32955@freescale.com> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1366967337-5534-1-git-send-email-b32955@freescale.com> References: <1366967337-5534-1-git-send-email-b32955@freescale.com> MIME-Version: 1.0 X-OriginatorOrg: freescale.com X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20130426_052048_637344_3BCFF312 X-CRM114-Status: GOOD ( 10.12 ) X-Spam-Score: -4.2 (----) X-Spam-Report: SpamAssassin version 3.3.2 on merlin.infradead.org summary: Content analysis details: (-4.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at http://www.dnswl.org/, medium trust [65.55.88.11 listed in list.dnswl.org] -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] Cc: Huang Shijie , computersforpeace@gmail.com, linux-mtd@lists.infradead.org, linux-kernel@vger.kernel.org, dedekind1@gmail.com X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-mtd" Errors-To: linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org Add more commit for ecc_strength and ecc_size fields. We can treat the comment as the initial semantics for the two fields. Signed-off-by: Huang Shijie --- include/linux/mtd/nand.h | 5 ++++- 1 files changed, 4 insertions(+), 1 deletions(-) diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index 5458021..a0c486b 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -435,8 +435,11 @@ struct nand_buffers { * not bad when badblockbits == 7 * @cellinfo: [INTERN] MLC/multichip data from chip ident * @ecc_strength: [INTERN] ECC correctability from the datasheet. + * The minimum number of bits correctability, if known; + * if unknown, set to 0. * @ecc_size: [INTERN] ECC size required by the @ecc_strength, - * also from the datasheet. + * also from the datasheet. It is the recommended ECC step + * size, if known; if unknown, set to 0. * @numchips: [INTERN] number of physical chips * @chipsize: [INTERN] the size of one chip for multichip arrays * @pagemask: [INTERN] page number mask = number of (pages / chip) - 1