From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 97011C4727C for ; Tue, 29 Sep 2020 23:02:31 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 1A62C20897 for ; Tue, 29 Sep 2020 23:02:31 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="uR3VK21a" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1A62C20897 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=bootlin.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-mtd-bounces+linux-mtd=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To:Message-Id:Date: Subject:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=3GqiQlAuC9J9UP+ARztl70j+AdPfnh4dtjK0D+p1fqw=; b=uR3VK21aiwN85DfkypAVgAYMP mUZwALc69oDEhnrvWmOR4+FU7Y26CbpxUB61K5VjFcQXFhxyDFQi5qmUYXz4iyDHkqUT++gS9juk4 Ieh0Vqu+Pb19Fky/u5NbIfGrPZq/vI98JI2NFNOCQq/rvUw7zuDGvC1+Sy3aC38MeplxBu4fuxzCk 9XX0PVDr3QreWyAH1rDmep4wc8X80iBC8zG22fiUnvfygfpXKUacxJrxzKt/44ZX9JdEoPkxkKVTn O7KvvZLJ7Ad4xISAvLVykPjmWOlG2j2JrOWbsATjd7wJbjZIMwNckTiHXD8QXDYLb4LfcgaA3tKQD iWogQNeQA==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kNOdA-0001JM-RR; Tue, 29 Sep 2020 23:01:56 +0000 Received: from relay12.mail.gandi.net ([217.70.178.232]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1kNOcn-0001BP-Vd for linux-mtd@lists.infradead.org; Tue, 29 Sep 2020 23:01:36 +0000 Received: from localhost.localdomain (unknown [91.224.148.103]) (Authenticated sender: miquel.raynal@bootlin.com) by relay12.mail.gandi.net (Postfix) with ESMTPSA id 2EA61200009; Tue, 29 Sep 2020 23:01:32 +0000 (UTC) From: Miquel Raynal To: Richard Weinberger , Vignesh Raghavendra , Tudor Ambarus , Subject: [PATCH 04/20] mtd: nand: ecc-bch: Stop exporting the private structure Date: Wed, 30 Sep 2020 01:01:08 +0200 Message-Id: <20200929230124.31491-5-miquel.raynal@bootlin.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200929230124.31491-1-miquel.raynal@bootlin.com> References: <20200929230124.31491-1-miquel.raynal@bootlin.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200929_190134_225601_78ACA3D9 X-CRM114-Status: GOOD ( 20.21 ) X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Julien Su , ycllin@mxic.com.tw, Thomas Petazzoni , Miquel Raynal Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-mtd" Errors-To: linux-mtd-bounces+linux-mtd=archiver.kernel.org@lists.infradead.org The NAND BCH control structure has nothing to do outside of this driver, all users of the nand_bch_init/free() functions just save it to chip->ecc.priv so do it in this driver directly and return a regular error code instead. Signed-off-by: Miquel Raynal --- drivers/mtd/nand/ecc-sw-bch.c | 36 ++++++++++++++++------------- drivers/mtd/nand/raw/fsmc_nand.c | 2 +- drivers/mtd/nand/raw/nand_base.c | 12 ++++++---- drivers/mtd/nand/raw/omap2.c | 16 ++++++------- include/linux/mtd/nand-ecc-sw-bch.h | 11 ++++----- 5 files changed, 41 insertions(+), 36 deletions(-) diff --git a/drivers/mtd/nand/ecc-sw-bch.c b/drivers/mtd/nand/ecc-sw-bch.c index fe080a0837d8..97221ec3876e 100644 --- a/drivers/mtd/nand/ecc-sw-bch.c +++ b/drivers/mtd/nand/ecc-sw-bch.c @@ -90,7 +90,7 @@ EXPORT_SYMBOL(nand_bch_correct_data); /** * nand_bch_init - Initialize software BCH ECC engine - * @mtd: MTD device + * @chip: NAND chip object * * Returns: a pointer to a new NAND BCH control structure, or NULL upon failure * @@ -105,24 +105,24 @@ EXPORT_SYMBOL(nand_bch_correct_data); * @eccsize = 512 (thus, m = 13 is the smallest integer such that 2^m - 1 > 512 * 8) * @eccbytes = 7 (7 bytes are required to store m * t = 13 * 4 = 52 bits) */ -struct nand_bch_control *nand_bch_init(struct mtd_info *mtd) +int nand_bch_init(struct nand_chip *chip) { - struct nand_chip *nand = mtd_to_nand(mtd); + struct mtd_info *mtd = nand_to_mtd(chip); unsigned int m, t, eccsteps, i; struct nand_bch_control *nbc = NULL; unsigned char *erased_page; - unsigned int eccsize = nand->ecc.size; - unsigned int eccbytes = nand->ecc.bytes; - unsigned int eccstrength = nand->ecc.strength; + unsigned int eccsize = chip->ecc.size; + unsigned int eccbytes = chip->ecc.bytes; + unsigned int eccstrength = chip->ecc.strength; if (!eccbytes && eccstrength) { eccbytes = DIV_ROUND_UP(eccstrength * fls(8 * eccsize), 8); - nand->ecc.bytes = eccbytes; + chip->ecc.bytes = eccbytes; } if (!eccsize || !eccbytes) { pr_warn("ecc parameters not supplied\n"); - goto fail; + return -EINVAL; } m = fls(1+8*eccsize); @@ -130,7 +130,9 @@ struct nand_bch_control *nand_bch_init(struct mtd_info *mtd) nbc = kzalloc(sizeof(*nbc), GFP_KERNEL); if (!nbc) - goto fail; + return -ENOMEM; + + chip->ecc.priv = nbc; nbc->bch = bch_init(m, t, 0, false); if (!nbc->bch) @@ -165,8 +167,8 @@ struct nand_bch_control *nand_bch_init(struct mtd_info *mtd) * FIXME: we should probably rework the sequencing in nand_scan_tail() * to avoid setting those fields twice. */ - nand->ecc.steps = eccsteps; - nand->ecc.total = eccsteps * eccbytes; + chip->ecc.steps = eccsteps; + chip->ecc.total = eccsteps * eccbytes; if (mtd_ooblayout_count_eccbytes(mtd) != (eccsteps*eccbytes)) { pr_warn("invalid ecc layout\n"); goto fail; @@ -192,12 +194,12 @@ struct nand_bch_control *nand_bch_init(struct mtd_info *mtd) nbc->eccmask[i] ^= 0xff; if (!eccstrength) - nand->ecc.strength = (eccbytes * 8) / fls(8 * eccsize); + chip->ecc.strength = (eccbytes * 8) / fls(8 * eccsize); - return nbc; + return 0; fail: - nand_bch_free(nbc); - return NULL; + nand_bch_free(chip); + return -EINVAL; } EXPORT_SYMBOL(nand_bch_init); @@ -205,8 +207,10 @@ EXPORT_SYMBOL(nand_bch_init); * nand_bch_free - Release NAND BCH ECC resources * @nbc: NAND BCH control structure */ -void nand_bch_free(struct nand_bch_control *nbc) +void nand_bch_free(struct nand_chip *chip) { + struct nand_bch_control *nbc = chip->ecc.priv; + if (nbc) { bch_free(nbc->bch); kfree(nbc->errloc); diff --git a/drivers/mtd/nand/raw/fsmc_nand.c b/drivers/mtd/nand/raw/fsmc_nand.c index 4191831df182..1bc2462efeab 100644 --- a/drivers/mtd/nand/raw/fsmc_nand.c +++ b/drivers/mtd/nand/raw/fsmc_nand.c @@ -927,7 +927,7 @@ static int fsmc_nand_attach_chip(struct nand_chip *nand) /* * Don't set layout for BCH4 SW ECC. This will be - * generated later in nand_bch_init() later. + * generated later during BCH initialization. */ if (nand->ecc.engine_type == NAND_ECC_ENGINE_TYPE_ON_HOST) { switch (mtd->oobsize) { diff --git a/drivers/mtd/nand/raw/nand_base.c b/drivers/mtd/nand/raw/nand_base.c index 189d3a301a38..c47441ddc5cf 100644 --- a/drivers/mtd/nand/raw/nand_base.c +++ b/drivers/mtd/nand/raw/nand_base.c @@ -5208,6 +5208,7 @@ static int nand_set_ecc_soft_ops(struct nand_chip *chip) struct mtd_info *mtd = nand_to_mtd(chip); struct nand_device *nanddev = mtd_to_nanddev(mtd); struct nand_ecc_ctrl *ecc = &chip->ecc; + int ret; if (WARN_ON(ecc->engine_type != NAND_ECC_ENGINE_TYPE_SOFT)) return -EINVAL; @@ -5294,13 +5295,14 @@ static int nand_set_ecc_soft_ops(struct nand_chip *chip) ecc->strength = bytes * 8 / fls(8 * ecc->size); } - /* See nand_bch_init() for details. */ + /* See the software BCH ECC initialization for details */ ecc->bytes = 0; - ecc->priv = nand_bch_init(mtd); - if (!ecc->priv) { + ret = nand_bch_init(chip); + if (ret) { WARN(1, "BCH ECC initialization failed!\n"); - return -EINVAL; + return ret; } + return 0; default: WARN(1, "Unsupported ECC algorithm!\n"); @@ -5960,7 +5962,7 @@ void nand_cleanup(struct nand_chip *chip) { if (chip->ecc.engine_type == NAND_ECC_ENGINE_TYPE_SOFT && chip->ecc.algo == NAND_ECC_ALGO_BCH) - nand_bch_free((struct nand_bch_control *)chip->ecc.priv); + nand_bch_free(chip); nanddev_cleanup(&chip->base); diff --git a/drivers/mtd/nand/raw/omap2.c b/drivers/mtd/nand/raw/omap2.c index 0ef209e1cd87..6aab57336690 100644 --- a/drivers/mtd/nand/raw/omap2.c +++ b/drivers/mtd/nand/raw/omap2.c @@ -2047,10 +2047,10 @@ static int omap_nand_attach_chip(struct nand_chip *chip) /* Reserve one byte for the OMAP marker */ oobbytes_per_step = chip->ecc.bytes + 1; /* Software BCH library is used for locating errors */ - chip->ecc.priv = nand_bch_init(mtd); - if (!chip->ecc.priv) { + err = nand_bch_init(chip); + if (err) { dev_err(dev, "Unable to use BCH library\n"); - return -EINVAL; + return err; } break; @@ -2089,10 +2089,10 @@ static int omap_nand_attach_chip(struct nand_chip *chip) /* Reserve one byte for the OMAP marker */ oobbytes_per_step = chip->ecc.bytes + 1; /* Software BCH library is used for locating errors */ - chip->ecc.priv = nand_bch_init(mtd); - if (!chip->ecc.priv) { + err = nand_bch_init(chip); + if (err) { dev_err(dev, "unable to use BCH library\n"); - return -EINVAL; + return err; } break; @@ -2272,7 +2272,7 @@ static int omap_nand_probe(struct platform_device *pdev) if (!IS_ERR_OR_NULL(info->dma)) dma_release_channel(info->dma); if (nand_chip->ecc.priv) { - nand_bch_free(nand_chip->ecc.priv); + nand_bch_free(nand_chip); nand_chip->ecc.priv = NULL; } return err; @@ -2286,7 +2286,7 @@ static int omap_nand_remove(struct platform_device *pdev) int ret; if (nand_chip->ecc.priv) { - nand_bch_free(nand_chip->ecc.priv); + nand_bch_free(nand_chip); nand_chip->ecc.priv = NULL; } if (info->dma) diff --git a/include/linux/mtd/nand-ecc-sw-bch.h b/include/linux/mtd/nand-ecc-sw-bch.h index 1e1ee3af82b1..b62b8bd4669f 100644 --- a/include/linux/mtd/nand-ecc-sw-bch.h +++ b/include/linux/mtd/nand-ecc-sw-bch.h @@ -10,7 +10,6 @@ struct mtd_info; struct nand_chip; -struct nand_bch_control; #if IS_ENABLED(CONFIG_MTD_NAND_ECC_SW_BCH) @@ -30,11 +29,11 @@ int nand_bch_correct_data(struct nand_chip *chip, u_char *dat, /* * Initialize BCH encoder/decoder */ -struct nand_bch_control *nand_bch_init(struct mtd_info *mtd); +int nand_bch_init(struct nand_chip *chip); /* * Release BCH encoder/decoder resources */ -void nand_bch_free(struct nand_bch_control *nbc); +void nand_bch_free(struct nand_chip *chip); #else /* !CONFIG_MTD_NAND_ECC_SW_BCH */ @@ -54,12 +53,12 @@ nand_bch_correct_data(struct nand_chip *chip, unsigned char *buf, return -ENOTSUPP; } -static inline struct nand_bch_control *nand_bch_init(struct mtd_info *mtd) +static inline int nand_bch_init(struct nand_chip *chip) { - return NULL; + return -ENOTSUPP; } -static inline void nand_bch_free(struct nand_bch_control *nbc) {} +static inline void nand_bch_free(struct nand_chip *chip) {} #endif /* CONFIG_MTD_NAND_ECC_SW_BCH */ -- 2.20.1 ______________________________________________________ Linux MTD discussion mailing list http://lists.infradead.org/mailman/listinfo/linux-mtd/