From patchwork Fri Aug 16 02:10:05 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Huang Shijie X-Patchwork-Id: 267534 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from casper.infradead.org (unknown [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 000322C0237 for ; Fri, 16 Aug 2013 12:13:49 +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 1VA9Xk-0007Lb-G5; Fri, 16 Aug 2013 02:13:36 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1VA9Xf-000686-T4; Fri, 16 Aug 2013 02:13:31 +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 1VA9XP-000638-58 for linux-mtd@lists.infradead.org; Fri, 16 Aug 2013 02:13:15 +0000 Received: from mail169-co9-R.bigfish.com (10.236.132.252) by CO9EHSOBE017.bigfish.com (10.236.130.80) with Microsoft SMTP Server id 14.1.225.22; Fri, 16 Aug 2013 02:12:53 +0000 Received: from mail169-co9 (localhost [127.0.0.1]) by mail169-co9-R.bigfish.com (Postfix) with ESMTP id A2ADF2400E8; Fri, 16 Aug 2013 02:12:53 +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(zzzz1f42h208ch1ee6h1de0h1fdah2073h1202h1e76h1d1ah1d2ah1fc6h1082kzz1de098h8275bh1de097hz2dh2a8h668h839hd24he5bhf0ah1288h12a5h12a9h12bdh12e5h137ah139eh13b6h1441h1504h1537h162dh1631h1758h1898h18e1h1946h19b5h1ad9h1b0ah1b2fh1fb3h1d0ch1d2eh1d3fh1dfeh1dffh1e23h1fe8h1ff5h1155h) Received: from mail169-co9 (localhost.localdomain [127.0.0.1]) by mail169-co9 (MessageSwitch) id 1376619170941860_23466; Fri, 16 Aug 2013 02:12:50 +0000 (UTC) Received: from CO9EHSMHS006.bigfish.com (unknown [10.236.132.236]) by mail169-co9.bigfish.com (Postfix) with ESMTP id E082FD80047; Fri, 16 Aug 2013 02:12:50 +0000 (UTC) Received: from mail.freescale.net (70.37.183.190) by CO9EHSMHS006.bigfish.com (10.236.130.16) with Microsoft SMTP Server (TLS) id 14.16.227.3; Fri, 16 Aug 2013 02:12:50 +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 14.3.136.1; Fri, 16 Aug 2013 02:12:49 +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 r7G2CeI9016898; Thu, 15 Aug 2013 19:12:46 -0700 From: Huang Shijie To: Subject: [PATCH v4 2/6] mtd: add a new sys node to show the ecc step size Date: Fri, 16 Aug 2013 10:10:05 +0800 Message-ID: <1376619009-8622-3-git-send-email-b32955@freescale.com> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1376619009-8622-1-git-send-email-b32955@freescale.com> References: <1376619009-8622-1-git-send-email-b32955@freescale.com> MIME-Version: 1.0 X-OriginatorOrg: freescale.com X-FOPE-CONNECTOR: Id%0$Dn%*$RO%0$TLS%0$FQDN%$TlsDn% X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20130815_221315_257771_7ADDA97F X-CRM114-Status: UNSURE ( 8.99 ) 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, pekon@ti.com, 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 048c823..5e14d54 100644 --- a/drivers/mtd/mtdcore.c +++ b/drivers/mtd/mtdcore.c @@ -285,6 +285,16 @@ static DEVICE_ATTR(bitflip_threshold, S_IRUGO | S_IWUSR, mtd_bitflip_threshold_show, mtd_bitflip_threshold_store); +static ssize_t mtd_ecc_step_size_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct mtd_info *mtd = dev_get_drvdata(dev); + + return snprintf(buf, PAGE_SIZE, "%u\n", mtd->ecc_step_size); + +} +static DEVICE_ATTR(ecc_step_size, S_IRUGO, mtd_ecc_step_size_show, NULL); + static struct attribute *mtd_attrs[] = { &dev_attr_type.attr, &dev_attr_flags.attr, @@ -296,6 +306,7 @@ static struct attribute *mtd_attrs[] = { &dev_attr_numeraseregions.attr, &dev_attr_name.attr, &dev_attr_ecc_strength.attr, + &dev_attr_ecc_step_size.attr, &dev_attr_bitflip_threshold.attr, NULL, };