From patchwork Wed Mar 14 06:17:16 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vipin Kumar X-Patchwork-Id: 146550 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from merlin.infradead.org (merlin.infradead.org [IPv6:2001:4978:20e::2]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id 8F617B6EF4 for ; Wed, 14 Mar 2012 17:20:15 +1100 (EST) Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.76 #1 (Red Hat Linux)) id 1S7hYC-00038j-94; Wed, 14 Mar 2012 06:19:08 +0000 Received: from eu1sys200aog115.obsmtp.com ([207.126.144.139]) by merlin.infradead.org with smtps (Exim 4.76 #1 (Red Hat Linux)) id 1S7hXj-0002ry-8w for linux-mtd@lists.infradead.org; Wed, 14 Mar 2012 06:18:40 +0000 Received: from beta.dmz-ap.st.com ([138.198.100.35]) (using TLSv1) by eu1sys200aob115.postini.com ([207.126.147.11]) with SMTP ID DSNKT2A4Oyy/4SddcOVrYwxy+sg1LNPQSW2C@postini.com; Wed, 14 Mar 2012 06:18:38 UTC Received: from zeta.dmz-ap.st.com (ns6.st.com [138.198.234.13]) by beta.dmz-ap.st.com (STMicroelectronics) with ESMTP id 307A884; Wed, 14 Mar 2012 06:10:09 +0000 (GMT) Received: from Webmail-ap.st.com (eapex1hubcas1.st.com [10.80.176.8]) by zeta.dmz-ap.st.com (STMicroelectronics) with ESMTP id AABF91755; Wed, 14 Mar 2012 06:18:32 +0000 (GMT) Received: from localhost (10.199.82.151) by Webmail-ap.st.com (10.80.176.7) with Microsoft SMTP Server (TLS) id 8.3.192.1; Wed, 14 Mar 2012 14:17:54 +0800 From: Vipin Kumar To: , Subject: [PATCH v2 10/13] nand/fsmc: Use dev_err to report error scenario Date: Wed, 14 Mar 2012 11:47:16 +0530 Message-ID: X-Mailer: git-send-email 1.7.0.4 In-Reply-To: References: MIME-Version: 1.0 X-Spam-Note: CRM114 invocation failed 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 [207.126.144.139 listed in list.dnswl.org] -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] Cc: sr@denx.de, Vipin Kumar , linus.walleij@linaro.org, spear-devel@list.st.com X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-mtd-bounces@lists.infradead.org Errors-To: linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org fsmc controller takes time to calculate the bch8 codes and the error offsets. The calculate logic checks for completion upto a timeout. This patch adds a error print when this timer expires and the ecc or error offsets are not yet calculated. Signed-off-by: Vipin Kumar Reviewed-by: Viresh Kumar --- drivers/mtd/nand/fsmc_nand.c | 7 +++++++ 1 files changed, 7 insertions(+), 0 deletions(-) diff --git a/drivers/mtd/nand/fsmc_nand.c b/drivers/mtd/nand/fsmc_nand.c index f0168a3..e093fd5 100644 --- a/drivers/mtd/nand/fsmc_nand.c +++ b/drivers/mtd/nand/fsmc_nand.c @@ -296,6 +296,7 @@ struct fsmc_nand_data { struct fsmc_eccplace *ecc_place; unsigned int bank; + struct device *dev; struct clk *clk; struct fsmc_nand_timings *dev_timings; @@ -457,6 +458,11 @@ static int fsmc_read_hwecc_ecc4(struct mtd_info *mtd, const uint8_t *data, cond_resched(); } while (!time_after_eq(jiffies, deadline)); + if (time_after_eq(jiffies, deadline)) { + dev_err(host->dev, "calculate ecc timed out\n"); + return -ETIMEDOUT; + } + ecc_tmp = readl(®s->bank_regs[bank].ecc1); ecc[0] = (uint8_t) (ecc_tmp >> 0); ecc[1] = (uint8_t) (ecc_tmp >> 8); @@ -793,6 +799,7 @@ static int __init fsmc_nand_probe(struct platform_device *pdev) host->select_chip = pdata->select_bank; host->partitions = pdata->partitions; host->nr_partitions = pdata->nr_partitions; + host->dev = &pdev->dev; host->dev_timings = pdata->nand_timings; regs = host->regs_va;