From patchwork Fri May 3 06:21:42 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Huang Shijie X-Patchwork-Id: 241211 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 23E1E2C00A4 for ; Fri, 3 May 2013 16:36:56 +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 1UY9bD-0003Ym-3m; Fri, 03 May 2013 06:36:08 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1UY9b0-0000sA-3d; Fri, 03 May 2013 06:35:54 +0000 Received: from co9ehsobe005.messaging.microsoft.com ([207.46.163.28] helo=co9outboundpool.messaging.microsoft.com) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1UY9ai-0000kE-Gw for linux-mtd@lists.infradead.org; Fri, 03 May 2013 06:35:45 +0000 Received: from mail195-co9-R.bigfish.com (10.236.132.225) by CO9EHSOBE023.bigfish.com (10.236.130.86) with Microsoft SMTP Server id 14.1.225.23; Fri, 3 May 2013 06:35:16 +0000 Received: from mail195-co9 (localhost [127.0.0.1]) by mail195-co9-R.bigfish.com (Postfix) with ESMTP id 6E05FC80862; Fri, 3 May 2013 06:35:16 +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(zzzz1f42h1fc6h1ee6h1de0h1fdah1202h1e76h1d1ah1d2ah1082kzz8275bhz2dh2a8h668h839hd24he5bhf0ah1288h12a5h12a9h12bdh12e5h137ah139eh13b6h1441h1504h1537h162dh1631h1758h1898h18e1h1946h19b5h1ad9h1b0ah1d0ch1d2eh1d3fh1155h) Received: from mail195-co9 (localhost.localdomain [127.0.0.1]) by mail195-co9 (MessageSwitch) id 1367562914131495_30387; Fri, 3 May 2013 06:35:14 +0000 (UTC) Received: from CO9EHSMHS013.bigfish.com (unknown [10.236.132.234]) by mail195-co9.bigfish.com (Postfix) with ESMTP id 1D68A1401AA; Fri, 3 May 2013 06:35:14 +0000 (UTC) Received: from mail.freescale.net (70.37.183.190) by CO9EHSMHS013.bigfish.com (10.236.130.23) with Microsoft SMTP Server (TLS) id 14.1.225.23; Fri, 3 May 2013 06:35:13 +0000 Received: from tx30smr01.am.freescale.net (10.81.153.31) by 039-SN1MMR1-005.039d.mgd.msft.net (10.84.1.17) with Microsoft SMTP Server (TLS) id 14.2.328.11; Fri, 3 May 2013 06:35:03 +0000 Received: from shlinux2.ap.freescale.net (shlinux2.ap.freescale.net [10.192.224.44]) by tx30smr01.am.freescale.net (8.14.3/8.14.0) with ESMTP id r436YqhG005507; Thu, 2 May 2013 23:35:01 -0700 From: Huang Shijie To: Subject: [PATCH 2/4] mtd: add a new sys node to show the ecc step size Date: Fri, 3 May 2013 14:21:42 +0800 Message-ID: <1367562104-8955-3-git-send-email-b32955@freescale.com> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1367562104-8955-1-git-send-email-b32955@freescale.com> References: <1367562104-8955-1-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-20130503_023536_836092_2E55CD13 X-CRM114-Status: UNSURE ( 9.30 ) X-CRM114-Notice: Please train this message. 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 [207.46.163.28 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 a new sys node to show the ecc step size. The application then can uses this node to get the ecc step size. Signed-off-by: Huang Shijie --- drivers/mtd/mtdcore.c | 11 +++++++++++ 1 files changed, 11 insertions(+), 0 deletions(-) diff --git a/drivers/mtd/mtdcore.c b/drivers/mtd/mtdcore.c index e513fc4..2ed2827 100644 --- a/drivers/mtd/mtdcore.c +++ b/drivers/mtd/mtdcore.c @@ -287,6 +287,16 @@ static DEVICE_ATTR(bitflip_threshold, S_IRUGO | S_IWUSR, mtd_bitflip_threshold_show, mtd_bitflip_threshold_store); +static ssize_t mtd_ecc_size_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct mtd_info *mtd = dev_get_drvdata(dev); + + return snprintf(buf, PAGE_SIZE, "%lu\n", (unsigned long)mtd->ecc_size); + +} +static DEVICE_ATTR(ecc_size, S_IRUGO, mtd_ecc_size_show, NULL); + static struct attribute *mtd_attrs[] = { &dev_attr_type.attr, &dev_attr_flags.attr, @@ -298,6 +308,7 @@ static struct attribute *mtd_attrs[] = { &dev_attr_numeraseregions.attr, &dev_attr_name.attr, &dev_attr_ecc_strength.attr, + &dev_attr_ecc_size.attr, &dev_attr_bitflip_threshold.attr, NULL, };