From patchwork Wed May 15 08:46:44 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Huang Shijie X-Patchwork-Id: 244058 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 390C82C00A5 for ; Wed, 15 May 2013 22:23:51 +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 1UcXdQ-00027D-BK; Wed, 15 May 2013 09:04:33 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1UcXc8-0002qD-4Q; Wed, 15 May 2013 09:03:12 +0000 Received: from va3ehsobe002.messaging.microsoft.com ([216.32.180.12] helo=va3outboundpool.messaging.microsoft.com) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1UcXc1-0002n8-M9 for linux-mtd@lists.infradead.org; Wed, 15 May 2013 09:03:07 +0000 Received: from mail32-va3-R.bigfish.com (10.7.14.228) by VA3EHSOBE012.bigfish.com (10.7.40.62) with Microsoft SMTP Server id 14.1.225.23; Wed, 15 May 2013 09:02:44 +0000 Received: from mail32-va3 (localhost [127.0.0.1]) by mail32-va3-R.bigfish.com (Postfix) with ESMTP id B425A120642; Wed, 15 May 2013 09:02:44 +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(zzzz1f42h1ee6h1de0h1fdah1202h1e76h1d1ah1d2ah1fc6h1082kzz8275bhz2dh2a8h668h839hd24he5bhf0ah1288h12a5h12a9h12bdh12e5h137ah139eh13b6h1441h1504h1537h162dh1631h1758h1898h18e1h1946h19b5h1ad9h1b0ah1d0ch1d2eh1d3fh1155h) Received: from mail32-va3 (localhost.localdomain [127.0.0.1]) by mail32-va3 (MessageSwitch) id 1368608562334740_15318; Wed, 15 May 2013 09:02:42 +0000 (UTC) Received: from VA3EHSMHS002.bigfish.com (unknown [10.7.14.249]) by mail32-va3.bigfish.com (Postfix) with ESMTP id 3FABAE0075; Wed, 15 May 2013 09:02:42 +0000 (UTC) Received: from mail.freescale.net (70.37.183.190) by VA3EHSMHS002.bigfish.com (10.7.99.12) with Microsoft SMTP Server (TLS) id 14.1.225.23; Wed, 15 May 2013 09:02:38 +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; Wed, 15 May 2013 09:02:37 +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 r4F92Upn023150; Wed, 15 May 2013 02:02:35 -0700 From: Huang Shijie To: Subject: [PATCH v2 2/4] mtd: add a new sys node to show the ecc step size Date: Wed, 15 May 2013 16:46:44 +0800 Message-ID: <1368607606-4344-3-git-send-email-b32955@freescale.com> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1368607606-4344-1-git-send-email-b32955@freescale.com> References: <1368607606-4344-1-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-20130515_050305_923434_787A5404 X-CRM114-Status: GOOD ( 10.02 ) X-Spam-Score: -2.6 (--) X-Spam-Report: SpamAssassin version 3.3.2 on merlin.infradead.org summary: Content analysis details: (-2.6 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at http://www.dnswl.org/, low trust [216.32.180.12 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 c400c57..63903b9 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_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_step); + +} +static DEVICE_ATTR(ecc_step, S_IRUGO, mtd_ecc_step_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.attr, &dev_attr_bitflip_threshold.attr, NULL, };