From patchwork Mon Nov 21 09:03:04 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Boris BREZILLON X-Patchwork-Id: 9439019 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 86E52606DB for ; Mon, 21 Nov 2016 09:05:11 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 6D71B2883A for ; Mon, 21 Nov 2016 09:05:11 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 5E5E528867; Mon, 21 Nov 2016 09:05:11 +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=-4.2 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_MED autolearn=unavailable version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id CB01A2883A for ; Mon, 21 Nov 2016 09:05:10 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.85_2 #1 (Red Hat Linux)) id 1c8kVh-000600-RT; Mon, 21 Nov 2016 09:03:33 +0000 Received: from mail.free-electrons.com ([62.4.15.54]) by bombadil.infradead.org with esmtp (Exim 4.85_2 #1 (Red Hat Linux)) id 1c8kVc-0005v4-4E; Mon, 21 Nov 2016 09:03:29 +0000 Received: by mail.free-electrons.com (Postfix, from userid 110) id 475CC20BE5; Mon, 21 Nov 2016 10:03:06 +0100 (CET) Received: from bbrezillon.home (LStLambert-657-1-97-87.w90-63.abo.wanadoo.fr [90.63.216.87]) by mail.free-electrons.com (Postfix) with ESMTPSA id F268B207AD; Mon, 21 Nov 2016 10:03:05 +0100 (CET) From: Boris Brezillon To: Boris Brezillon , Richard Weinberger , linux-mtd@lists.infradead.org, Marc Gonzalez Subject: [PATCH] mtd: nand: tango: Use nand_to_mtd() instead of directly accessing chip->mtd Date: Mon, 21 Nov 2016 10:03:04 +0100 Message-Id: <1479718984-26491-1-git-send-email-boris.brezillon@free-electrons.com> X-Mailer: git-send-email 2.7.4 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20161121_010328_483356_11684DAB X-CRM114-Status: GOOD ( 13.34 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-kernel@vger.kernel.org, Marek Vasut , Cyrille Pitchen , Brian Norris , David Woodhouse , linux-arm-kernel@lists.infradead.org MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP The nand_to_mtd() helper is here to hide internal mtd_info <-> nand_chip association and ease future refactors. Make use of this helper instead of directly accessing chip->mtd. Signed-off-by: Boris Brezillon Acked-by: Marc Gonzalez --- drivers/mtd/nand/tango_nand.c | 25 ++++++++++++++++--------- 1 file changed, 16 insertions(+), 9 deletions(-) diff --git a/drivers/mtd/nand/tango_nand.c b/drivers/mtd/nand/tango_nand.c index 7ed35348993e..ec87516b87f5 100644 --- a/drivers/mtd/nand/tango_nand.c +++ b/drivers/mtd/nand/tango_nand.c @@ -171,6 +171,7 @@ static void tango_select_chip(struct mtd_info *mtd, int idx) */ static int check_erased_page(struct nand_chip *chip, u8 *buf) { + struct mtd_info *mtd = nand_to_mtd(chip); u8 *meta = chip->oob_poi + BBM_SIZE; u8 *ecc = chip->oob_poi + BBM_SIZE + METADATA_SIZE; const int ecc_size = chip->ecc.bytes; @@ -183,7 +184,7 @@ static int check_erased_page(struct nand_chip *chip, u8 *buf) meta, meta_len, chip->ecc.strength); if (res < 0) - chip->mtd.ecc_stats.failed++; + mtd->ecc_stats.failed++; bitflips = max(res, bitflips); buf += pkt_size; @@ -300,26 +301,30 @@ static int tango_write_page(struct mtd_info *mtd, struct nand_chip *chip, static void aux_read(struct nand_chip *chip, u8 **buf, int len, int *pos) { + struct mtd_info *mtd = nand_to_mtd(chip); + *pos += len; if (!*buf) { /* skip over "len" bytes */ - chip->cmdfunc(&chip->mtd, NAND_CMD_RNDOUT, *pos, -1); + chip->cmdfunc(mtd, NAND_CMD_RNDOUT, *pos, -1); } else { - tango_read_buf(&chip->mtd, *buf, len); + tango_read_buf(mtd, *buf, len); *buf += len; } } static void aux_write(struct nand_chip *chip, const u8 **buf, int len, int *pos) { + struct mtd_info *mtd = nand_to_mtd(chip); + *pos += len; if (!*buf) { /* skip over "len" bytes */ - chip->cmdfunc(&chip->mtd, NAND_CMD_SEQIN, *pos, -1); + chip->cmdfunc(mtd, NAND_CMD_SEQIN, *pos, -1); } else { - tango_write_buf(&chip->mtd, *buf, len); + tango_write_buf(mtd, *buf, len); *buf += len; } } @@ -345,8 +350,9 @@ static void aux_write(struct nand_chip *chip, const u8 **buf, int len, int *pos) */ static void raw_read(struct nand_chip *chip, u8 *buf, u8 *oob) { + struct mtd_info *mtd = nand_to_mtd(chip); u8 *oob_orig = oob; - const int page_size = chip->mtd.writesize; + const int page_size = mtd->writesize; const int ecc_size = chip->ecc.bytes; const int pkt_size = chip->ecc.size; int pos = 0; /* position within physical page */ @@ -371,8 +377,9 @@ static void raw_read(struct nand_chip *chip, u8 *buf, u8 *oob) static void raw_write(struct nand_chip *chip, const u8 *buf, const u8 *oob) { + struct mtd_info *mtd = nand_to_mtd(chip); const u8 *oob_orig = oob; - const int page_size = chip->mtd.writesize; + const int page_size = mtd->writesize; const int ecc_size = chip->ecc.bytes; const int pkt_size = chip->ecc.size; int pos = 0; /* position within physical page */ @@ -522,7 +529,7 @@ static int chip_init(struct device *dev, struct device_node *np) chip = &tchip->nand_chip; ecc = &chip->ecc; - mtd = &chip->mtd; + mtd = nand_to_mtd(chip); chip->read_byte = tango_read_byte; chip->write_buf = tango_write_buf; @@ -584,7 +591,7 @@ static int tango_nand_remove(struct platform_device *pdev) for (cs = 0; cs < MAX_CS; ++cs) { if (nfc->chips[cs]) - nand_release(&nfc->chips[cs]->nand_chip.mtd); + nand_release(nand_to_mtd(&nfc->chips[cs]->nand_chip)); } return 0;