From patchwork Fri Jan 25 21:09:50 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: "Gustavo A. R. Silva" X-Patchwork-Id: 10782051 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 7BBED91E for ; Fri, 25 Jan 2019 21:10:25 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 641A02FAB0 for ; Fri, 25 Jan 2019 21:10:25 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 55F9F307A7; Fri, 25 Jan 2019 21:10:25 +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=-5.2 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id B07F82FAB0 for ; Fri, 25 Jan 2019 21:10:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-ID:Subject:To:From :Date:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=T9yurj9DvaZPAMzqUSVIxB1mbc0KXW0/ibjB7F9l+mA=; b=VXhzMzQjlFmLkb /XK6wj5oOCAVxFHdFt9pqRZxUSzVo50igohBj2g0mc0gE/NiuihVGMeQ9IN9zDyYX441pNXrCmkUU RScRGaZHoJ026Cl4UbHdkDl79YHkGSseT9LETYXsoe57zNPEgYh2A+oG0cDWvUWDa84FHM0v/b3DD uhzrXEW/p8k1y+iu/5R6udLdVKJpWAOCy2tUhcdt+zCMbDsW2gOQts9jsGw1UmZOwi+4g+6inWDsa PD+UPacyasl9wRLe3xhdfllmmcACeteRNqv+RnygMQLP/V6TRrUV8rlB1jHAHDNfG09TIRea9Txtn C9aRUsK3cjcBw9z49w9w==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1gn8k2-0006k0-1z; Fri, 25 Jan 2019 21:10:22 +0000 Received: from gateway34.websitewelcome.com ([192.185.148.119]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1gn8jn-0005Ef-8e for linux-arm-kernel@lists.infradead.org; Fri, 25 Jan 2019 21:10:09 +0000 Received: from cm10.websitewelcome.com (cm10.websitewelcome.com [100.42.49.4]) by gateway34.websitewelcome.com (Postfix) with ESMTP id 6F66CE35E6 for ; Fri, 25 Jan 2019 15:09:54 -0600 (CST) Received: from gator4166.hostgator.com ([108.167.133.22]) by cmsmtp with SMTP id n8jagSIyw2PzOn8jag2B1L; Fri, 25 Jan 2019 15:09:54 -0600 X-Authority-Reason: nr=8 Received: from [189.250.130.205] (port=44236 helo=embeddedor) by gator4166.hostgator.com with esmtpa (Exim 4.91) (envelope-from ) id 1gn8jX-002sjP-VD; Fri, 25 Jan 2019 15:09:53 -0600 Date: Fri, 25 Jan 2019 15:09:50 -0600 From: "Gustavo A. R. Silva" To: Kyungmin Park , Boris Brezillon , Miquel Raynal , Richard Weinberger , David Woodhouse , Brian Norris , Marek Vasut , Wan ZongShun Subject: [PATCH] mtd: rawnand: mark expected switch fall-throughs Message-ID: <20190125210950.GA27855@embeddedor> MIME-Version: 1.0 Content-Disposition: inline User-Agent: Mutt/1.9.4 (2018-02-28) X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - gator4166.hostgator.com X-AntiAbuse: Original Domain - lists.infradead.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - embeddedor.com X-BWhitelist: no X-Source-IP: 189.250.130.205 X-Source-L: No X-Exim-ID: 1gn8jX-002sjP-VD X-Source: X-Source-Args: X-Source-Dir: X-Source-Sender: (embeddedor) [189.250.130.205]:44236 X-Source-Auth: gustavo@embeddedor.com X-Email-Count: 11 X-Source-Cap: Z3V6aWRpbmU7Z3V6aWRpbmU7Z2F0b3I0MTY2Lmhvc3RnYXRvci5jb20= X-Local-Domain: yes X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190125_131007_412291_18FEA86D X-CRM114-Status: GOOD ( 13.23 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kees Cook , linux-mtd@lists.infradead.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, "Gustavo A. R. Silva" 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 In preparation to enabling -Wimplicit-fallthrough, mark switch cases where we are expecting to fall through. This patch fixes the following warning: drivers/mtd/nand/onenand/onenand_base.c:3264:6: warning: this statement may fall through [-Wimplicit-fallthrough=] drivers/mtd/nand/onenand/onenand_base.c:3288:17: warning: this statement may fall through [-Wimplicit-fallthrough=] drivers/mtd/nand/raw/nand_base.c:5538:6: warning: this statement may fall through [-Wimplicit-fallthrough=] drivers/mtd/nand/raw/nand_base.c:5557:6: warning: this statement may fall through [-Wimplicit-fallthrough=] drivers/mtd/nand/raw/nand_base.c:5595:13: warning: this statement may fall through [-Wimplicit-fallthrough=] drivers/mtd/nand/raw/nand_legacy.c:332:6: warning: this statement may fall through [-Wimplicit-fallthrough=] drivers/mtd/nand/raw/nand_legacy.c:483:3: warning: this statement may fall through [-Wimplicit-fallthrough=] drivers/mtd/nand/raw/nandsim.c:2254:22: warning: this statement may fall through [-Wimplicit-fallthrough=] drivers/mtd/nand/raw/omap_elm.c:512:4: warning: this statement may fall through [-Wimplicit-fallthrough=] drivers/mtd/nand/raw/omap_elm.c:517:4: warning: this statement may fall through [-Wimplicit-fallthrough=] drivers/mtd/nand/raw/omap_elm.c:466:37: warning: this statement may fall through [-Wimplicit-fallthrough=] drivers/mtd/nand/raw/omap_elm.c:471:37: warning: this statement may fall through [-Wimplicit-fallthrough=] drivers/mtd/nand/raw/nuc900_nand.c: In function ‘nuc900_nand_command_lp’: ./arch/x86/include/asm/io.h:91:22: warning: this statement may fall through [-Wimplicit-fallthrough=] #define __raw_writel __writel drivers/mtd/nand/raw/nuc900_nand.c:52:2: note: in expansion of macro ‘__raw_writel’ __raw_writel((val), (dev)->reg + REG_SMCMD) ^~~~~~~~~~~~ drivers/mtd/nand/raw/nuc900_nand.c:196:3: note: in expansion of macro ‘write_cmd_reg’ write_cmd_reg(nand, NAND_CMD_READSTART); ^~~~~~~~~~~~~ drivers/mtd/nand/raw/nuc900_nand.c:197:2: note: here default: ^~~~~~~ Warning level 3 was used: -Wimplicit-fallthrough=3 This patch is part of the ongoing efforts to enabling -Wimplicit-fallthrough. Signed-off-by: Gustavo A. R. Silva --- drivers/mtd/nand/onenand/onenand_base.c | 2 ++ drivers/mtd/nand/raw/diskonchip.c | 1 + drivers/mtd/nand/raw/nand_base.c | 3 +++ drivers/mtd/nand/raw/nand_legacy.c | 3 ++- drivers/mtd/nand/raw/nandsim.c | 5 +++-- drivers/mtd/nand/raw/nuc900_nand.c | 3 ++- drivers/mtd/nand/raw/omap_elm.c | 4 ++++ 7 files changed, 17 insertions(+), 4 deletions(-) diff --git a/drivers/mtd/nand/onenand/onenand_base.c b/drivers/mtd/nand/onenand/onenand_base.c index 4ca4b194e7d7..e9b71ad24f50 100644 --- a/drivers/mtd/nand/onenand/onenand_base.c +++ b/drivers/mtd/nand/onenand/onenand_base.c @@ -3280,12 +3280,14 @@ static void onenand_check_features(struct mtd_info *mtd) if ((this->version_id & 0xf) == 0xe) this->options |= ONENAND_HAS_NOP_1; } + /* fall through */ case ONENAND_DEVICE_DENSITY_2Gb: /* 2Gb DDP does not have 2 plane */ if (!ONENAND_IS_DDP(this)) this->options |= ONENAND_HAS_2PLANE; this->options |= ONENAND_HAS_UNLOCK_ALL; + /* fall through */ case ONENAND_DEVICE_DENSITY_1Gb: /* A-Die has all block unlock */ diff --git a/drivers/mtd/nand/raw/diskonchip.c b/drivers/mtd/nand/raw/diskonchip.c index 53f57e0f007e..ead54c90f2d1 100644 --- a/drivers/mtd/nand/raw/diskonchip.c +++ b/drivers/mtd/nand/raw/diskonchip.c @@ -1477,6 +1477,7 @@ static int __init doc_probe(unsigned long physadr) break; case DOC_ChipID_DocMilPlus32: pr_err("DiskOnChip Millennium Plus 32MB is not supported, ignoring.\n"); + /* fall through */ default: ret = -ENODEV; goto notfound; diff --git a/drivers/mtd/nand/raw/nand_base.c b/drivers/mtd/nand/raw/nand_base.c index 96cadead262e..e05ecf2e4269 100644 --- a/drivers/mtd/nand/raw/nand_base.c +++ b/drivers/mtd/nand/raw/nand_base.c @@ -5537,6 +5537,7 @@ static int nand_scan_tail(struct nand_chip *chip) } if (!ecc->read_page) ecc->read_page = nand_read_page_hwecc_oob_first; + /* fall through */ case NAND_ECC_HW: /* Use standard hwecc read page function? */ @@ -5556,6 +5557,7 @@ static int nand_scan_tail(struct nand_chip *chip) ecc->read_subpage = nand_read_subpage; if (!ecc->write_subpage && ecc->hwctl && ecc->calculate) ecc->write_subpage = nand_write_subpage_hwecc; + /* fall through */ case NAND_ECC_HW_SYNDROME: if ((!ecc->calculate || !ecc->correct || !ecc->hwctl) && @@ -5593,6 +5595,7 @@ static int nand_scan_tail(struct nand_chip *chip) ecc->size, mtd->writesize); ecc->mode = NAND_ECC_SOFT; ecc->algo = NAND_ECC_HAMMING; + /* fall through */ case NAND_ECC_SOFT: ret = nand_set_ecc_soft_ops(chip); diff --git a/drivers/mtd/nand/raw/nand_legacy.c b/drivers/mtd/nand/raw/nand_legacy.c index 43575943f13b..f2526ec616a6 100644 --- a/drivers/mtd/nand/raw/nand_legacy.c +++ b/drivers/mtd/nand/raw/nand_legacy.c @@ -331,6 +331,7 @@ static void nand_command(struct nand_chip *chip, unsigned int command, */ if (column == -1 && page_addr == -1) return; + /* fall through */ default: /* @@ -483,7 +484,7 @@ static void nand_command_lp(struct nand_chip *chip, unsigned int command, chip->legacy.cmd_ctrl(chip, NAND_CMD_NONE, NAND_NCE | NAND_CTRL_CHANGE); - /* This applies to read commands */ + /* fall through - This applies to read commands */ default: /* * If we don't have access to the busy pin, we apply the given diff --git a/drivers/mtd/nand/raw/nandsim.c b/drivers/mtd/nand/raw/nandsim.c index 933d1a629c51..d33e15dc4cdc 100644 --- a/drivers/mtd/nand/raw/nandsim.c +++ b/drivers/mtd/nand/raw/nandsim.c @@ -2251,9 +2251,10 @@ static int __init ns_init_module(void) switch (bbt) { case 2: - chip->bbt_options |= NAND_BBT_NO_OOB; + chip->bbt_options |= NAND_BBT_NO_OOB; + /* fall through */ case 1: - chip->bbt_options |= NAND_BBT_USE_FLASH; + chip->bbt_options |= NAND_BBT_USE_FLASH; case 0: break; default: diff --git a/drivers/mtd/nand/raw/nuc900_nand.c b/drivers/mtd/nand/raw/nuc900_nand.c index 38b1994e7ed3..56fa84029482 100644 --- a/drivers/mtd/nand/raw/nuc900_nand.c +++ b/drivers/mtd/nand/raw/nuc900_nand.c @@ -192,8 +192,9 @@ static void nuc900_nand_command_lp(struct nand_chip *chip, return; case NAND_CMD_READ0: - write_cmd_reg(nand, NAND_CMD_READSTART); + /* fall through */ + default: if (!chip->legacy.dev_ready) { diff --git a/drivers/mtd/nand/raw/omap_elm.c b/drivers/mtd/nand/raw/omap_elm.c index a3f32f939cc1..94c6401ef32f 100644 --- a/drivers/mtd/nand/raw/omap_elm.c +++ b/drivers/mtd/nand/raw/omap_elm.c @@ -465,11 +465,13 @@ static int elm_context_save(struct elm_info *info) ELM_SYNDROME_FRAGMENT_5 + offset); regs->elm_syndrome_fragment_4[i] = elm_read_reg(info, ELM_SYNDROME_FRAGMENT_4 + offset); + /* fall through */ case BCH8_ECC: regs->elm_syndrome_fragment_3[i] = elm_read_reg(info, ELM_SYNDROME_FRAGMENT_3 + offset); regs->elm_syndrome_fragment_2[i] = elm_read_reg(info, ELM_SYNDROME_FRAGMENT_2 + offset); + /* fall through */ case BCH4_ECC: regs->elm_syndrome_fragment_1[i] = elm_read_reg(info, ELM_SYNDROME_FRAGMENT_1 + offset); @@ -511,11 +513,13 @@ static int elm_context_restore(struct elm_info *info) regs->elm_syndrome_fragment_5[i]); elm_write_reg(info, ELM_SYNDROME_FRAGMENT_4 + offset, regs->elm_syndrome_fragment_4[i]); + /* fall through */ case BCH8_ECC: elm_write_reg(info, ELM_SYNDROME_FRAGMENT_3 + offset, regs->elm_syndrome_fragment_3[i]); elm_write_reg(info, ELM_SYNDROME_FRAGMENT_2 + offset, regs->elm_syndrome_fragment_2[i]); + /* fall through */ case BCH4_ECC: elm_write_reg(info, ELM_SYNDROME_FRAGMENT_1 + offset, regs->elm_syndrome_fragment_1[i]);