From patchwork Thu May 3 12:20:35 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Abhishek Sahu X-Patchwork-Id: 10378073 X-Patchwork-Delegate: agross@codeaurora.org Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 66D8560159 for ; Thu, 3 May 2018 12:24:42 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 52EEE28516 for ; Thu, 3 May 2018 12:24:42 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 50C5C2871F; Thu, 3 May 2018 12:24:42 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.8 required=2.0 tests=BAYES_00,DKIM_SIGNED, MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI, T_DKIM_INVALID autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 0D8E9288BA for ; Thu, 3 May 2018 12:24:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751814AbeECMY1 (ORCPT ); Thu, 3 May 2018 08:24:27 -0400 Received: from smtp.codeaurora.org ([198.145.29.96]:42316 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751342AbeECMVb (ORCPT ); Thu, 3 May 2018 08:21:31 -0400 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id 6950960C66; Thu, 3 May 2018 12:21:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1525350091; bh=oCoDcGcQlZTC5XWDOx98OMLYgFLVhjxtdFp5pRvxULw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=NzVxyrheLdYM6M0ssM4cpoTwS4ncB24vH53UQRTqUMsS6RdrAE+GHuxQ5uJuDhZvN LEEHzJCCQZH+mAH8EAnWBmCp2su59Pw+c36rLgIVb8dwySuJbBfPF+gVmVQj/1SNvt 8GjNrnioQUViqsKdtnxzNUqCzRJw4egQCriJSspk= Received: from absahu-linux.qualcomm.com (blr-c-bdr-fw-01_globalnat_allzones-outside.qualcomm.com [103.229.19.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: absahu@smtp.codeaurora.org) by smtp.codeaurora.org (Postfix) with ESMTPSA id 85AFE60AF9; Thu, 3 May 2018 12:21:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1525350090; bh=oCoDcGcQlZTC5XWDOx98OMLYgFLVhjxtdFp5pRvxULw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=FuXb3f9c/6Qt16BKGzdldDwQyf4CIPMGuKU9DXm6xUG+JdsaaIyfE1lvBEmx0ikYX MVs/XUVAz7hc3xg1V1Yh+mN5syd4wt37F0zleAZA3MUQ3BBL+UiY5xSNjTCBXdzC+E aoCKTuMoJ10naDAQuZovHkodU/pQRhQmwSwGxGAE= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 85AFE60AF9 Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=absahu@codeaurora.org From: Abhishek Sahu To: Boris Brezillon Cc: David Woodhouse , Brian Norris , Marek Vasut , Richard Weinberger , Miquel Raynal , linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org, Andy Gross , Archit Taneja , Abhishek Sahu Subject: [PATCH v2 08/14] mtd: rawnand: qcom: parse read errors for read oob also Date: Thu, 3 May 2018 17:50:35 +0530 Message-Id: <1525350041-22995-9-git-send-email-absahu@codeaurora.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1525350041-22995-1-git-send-email-absahu@codeaurora.org> References: <1525350041-22995-1-git-send-email-absahu@codeaurora.org> Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP read_page and read_oob both calls the read_page_ecc function. The QCOM NAND controller protect the OOB available bytes with ECC so read errors should be checked for read_oob also. Now this patch moves the error checking code inside read_page_ecc so caller does not have to check explicitly for read errors. Signed-off-by: Abhishek Sahu Reviewed-by: Miquel Raynal --- * Changes from v1: 1. Minor code change for return early in case of error drivers/mtd/nand/raw/qcom_nandc.c | 26 +++++++++----------------- 1 file changed, 9 insertions(+), 17 deletions(-) diff --git a/drivers/mtd/nand/raw/qcom_nandc.c b/drivers/mtd/nand/raw/qcom_nandc.c index fa38142..61d0e7d 100644 --- a/drivers/mtd/nand/raw/qcom_nandc.c +++ b/drivers/mtd/nand/raw/qcom_nandc.c @@ -1700,6 +1700,7 @@ static int read_page_ecc(struct qcom_nand_host *host, u8 *data_buf, struct nand_chip *chip = &host->chip; struct qcom_nand_controller *nandc = get_qcom_nand_controller(chip); struct nand_ecc_ctrl *ecc = &chip->ecc; + u8 *data_buf_start = data_buf, *oob_buf_start = oob_buf; int i, ret; config_nand_page_read(nandc); @@ -1760,12 +1761,14 @@ static int read_page_ecc(struct qcom_nand_host *host, u8 *data_buf, } ret = submit_descs(nandc); - if (ret) + free_descs(nandc); + + if (ret) { dev_err(nandc->dev, "failure to read page/oob\n"); + return ret; + } - free_descs(nandc); - - return ret; + return parse_read_errors(host, data_buf_start, oob_buf_start); } /* @@ -1810,20 +1813,14 @@ static int qcom_nandc_read_page(struct mtd_info *mtd, struct nand_chip *chip, struct qcom_nand_host *host = to_qcom_nand_host(chip); struct qcom_nand_controller *nandc = get_qcom_nand_controller(chip); u8 *data_buf, *oob_buf = NULL; - int ret; nand_read_page_op(chip, page, 0, NULL, 0); data_buf = buf; oob_buf = oob_required ? chip->oob_poi : NULL; clear_bam_transaction(nandc); - ret = read_page_ecc(host, data_buf, oob_buf); - if (ret) { - dev_err(nandc->dev, "failure to read page\n"); - return ret; - } - return parse_read_errors(host, data_buf, oob_buf); + return read_page_ecc(host, data_buf, oob_buf); } /* implements ecc->read_page_raw() */ @@ -1913,7 +1910,6 @@ static int qcom_nandc_read_oob(struct mtd_info *mtd, struct nand_chip *chip, struct qcom_nand_host *host = to_qcom_nand_host(chip); struct qcom_nand_controller *nandc = get_qcom_nand_controller(chip); struct nand_ecc_ctrl *ecc = &chip->ecc; - int ret; clear_read_regs(nandc); clear_bam_transaction(nandc); @@ -1922,11 +1918,7 @@ static int qcom_nandc_read_oob(struct mtd_info *mtd, struct nand_chip *chip, set_address(host, 0, page); update_rw_regs(host, ecc->steps, true); - ret = read_page_ecc(host, NULL, chip->oob_poi); - if (ret) - dev_err(nandc->dev, "failure to read oob\n"); - - return ret; + return read_page_ecc(host, NULL, chip->oob_poi); } /* implements ecc->write_page() */