From patchwork Wed Apr 4 12:42:22 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Abhishek Sahu X-Patchwork-Id: 10322547 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 609366053F for ; Wed, 4 Apr 2018 12:44:29 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 52E1928D54 for ; Wed, 4 Apr 2018 12:44:29 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 46B2128E76; Wed, 4 Apr 2018 12:44:29 +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=-6.8 required=2.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_HI,T_DKIM_INVALID autolearn=ham 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 BCDF128D54 for ; Wed, 4 Apr 2018 12:44:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751543AbeDDMnX (ORCPT ); Wed, 4 Apr 2018 08:43:23 -0400 Received: from smtp.codeaurora.org ([198.145.29.96]:41342 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751525AbeDDMnV (ORCPT ); Wed, 4 Apr 2018 08:43:21 -0400 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id B55A560F61; Wed, 4 Apr 2018 12:43:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1522845800; bh=8+jsla+r4izk00dhvCnWT/GY2JuV7I8tqjKpmGJEtLY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=FxrPP9e9LsJIst/5f7N3hD4z3KaMYajTgVmBWESLcjGHfxNdX/n/V5YEzzsRua4fB wjpycsJjpowoMFYSW7d/X4KhzO7K5DTsFhSy1c1Z42tlIWURDYT5M6Foa9QOAEj+J9 aGNvUzNvrrxLrYEOKY6HBbSHe2hhdhgpt1Ss53bk= 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 2294D6055B; Wed, 4 Apr 2018 12:43:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1522845799; bh=8+jsla+r4izk00dhvCnWT/GY2JuV7I8tqjKpmGJEtLY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=gOj4RXmoiNP8PtOenOziDGlNJ60yf8qoknpNnumvMC9d1seShErb3IaLTFopF9p8c 2oIhYevJdORiin45VjWWFqd2JeKVQKOd1chKsT7n1bhaxLz0D7eDUmkG3jYsqoTCeV AhRGQnsJH5g79NkY+0QbD17wH6LoDe5B1d8RyqhQ= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 2294D6055B 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 , Cyrille Pitchen , linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org, Andy Gross , Archit Taneja , Abhishek Sahu Subject: [PATCH 6/9] mtd: nand: qcom: support for checking read errors for last codeword Date: Wed, 4 Apr 2018 18:12:22 +0530 Message-Id: <1522845745-6624-7-git-send-email-absahu@codeaurora.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1522845745-6624-1-git-send-email-absahu@codeaurora.org> References: <1522845745-6624-1-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 Add boolean function argument in parse_read_errors to identify whether the read error has been called for complete page read or only last codeword read. This will help in subsequent patches to detect ECC errors in case of last codeword read. Signed-off-by: Abhishek Sahu --- drivers/mtd/nand/qcom_nandc.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/drivers/mtd/nand/qcom_nandc.c b/drivers/mtd/nand/qcom_nandc.c index ba43752..dce97e8 100644 --- a/drivers/mtd/nand/qcom_nandc.c +++ b/drivers/mtd/nand/qcom_nandc.c @@ -1570,7 +1570,7 @@ struct read_stats { * errors. this is equivalent to what 'ecc->correct()' would do. */ static int parse_read_errors(struct qcom_nand_host *host, u8 *data_buf, - u8 *oob_buf) + u8 *oob_buf, bool last_cw) { struct nand_chip *chip = &host->chip; struct qcom_nand_controller *nandc = get_qcom_nand_controller(chip); @@ -1579,12 +1579,12 @@ static int parse_read_errors(struct qcom_nand_host *host, u8 *data_buf, unsigned int max_bitflips = 0; struct read_stats *buf; bool flash_op_err = false; - int i; + int i, cw_cnt = last_cw ? 1 : ecc->steps; buf = (struct read_stats *)nandc->reg_read_buf; nandc_read_buffer_sync(nandc, true); - for (i = 0; i < ecc->steps; i++, buf++) { + for (i = 0; i < cw_cnt; i++, buf++) { u32 flash, buffer, erased_cw; int data_len, oob_len; @@ -1743,7 +1743,8 @@ static int read_page_ecc(struct qcom_nand_host *host, u8 *data_buf, free_descs(nandc); if (!ret) - ret = parse_read_errors(host, data_buf_start, oob_buf_start); + ret = parse_read_errors(host, data_buf_start, oob_buf_start, + false); return ret; }