From patchwork Tue Jan 29 18:06:12 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: 10786777 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 47E6A184E for ; Tue, 29 Jan 2019 18:06:23 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 326C62D726 for ; Tue, 29 Jan 2019 18:06:23 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 266CE2D72B; Tue, 29 Jan 2019 18:06:23 +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 136FE2D2B0 for ; Tue, 29 Jan 2019 18:06:22 +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=hYCDCrGDA+msa27OtB0NCG2aKp1tas1vlPvbp/h5hEk=; b=bXpqJsf742N+24 t3PpyFcZ8aPgDY9IzkxJjehtbxTUIt6s8OsHScp/Ke+6rVFYmPJ8JbrollyeRxHuK4PsClkYahBcS 4WRSBSNEC2vDs3svEXOrSVxjifu2xGb8Nu4rcNBQ5aWrsStZogbDzaKLyVemTebXAFvi/fZo+LZOd fXdSTcrF1qhWp7w1UmsXiz1pgor9EOSeQItVcOD4NOYglz3Jj//OYHi5mWN7wWqIkg4GgwnCEqylW 2vmpYY0nD3T3bns52JAusRGSRCGLmt3tSQlCda25WQ91zhTPBOaabE1JFzInl1jHOJSK+GejZU70J sSMOXjOEHuEler4rtKdA==; 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 1goXm8-0003qx-Bj; Tue, 29 Jan 2019 18:06:20 +0000 Received: from gateway21.websitewelcome.com ([192.185.45.250]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1goXm4-0003qE-Ml for linux-arm-kernel@lists.infradead.org; Tue, 29 Jan 2019 18:06:18 +0000 Received: from cm17.websitewelcome.com (cm17.websitewelcome.com [100.42.49.20]) by gateway21.websitewelcome.com (Postfix) with ESMTP id 6EEA5400C9C34 for ; Tue, 29 Jan 2019 12:06:15 -0600 (CST) Received: from gator4166.hostgator.com ([108.167.133.22]) by cmsmtp with SMTP id oXm3g7LG390onoXm3gXTBe; Tue, 29 Jan 2019 12:06:15 -0600 X-Authority-Reason: nr=8 Received: from [189.250.130.205] (port=44894 helo=embeddedor) by gator4166.hostgator.com with esmtpa (Exim 4.91) (envelope-from ) id 1goXm2-0049dP-6P; Tue, 29 Jan 2019 12:06:14 -0600 Date: Tue, 29 Jan 2019 12:06:12 -0600 From: "Gustavo A. R. Silva" To: Wolfgang Grandegger , Marc Kleine-Budde , "David S. Miller" , Nicolas Ferre , Alexandre Belloni , Ludovic Desroches Subject: [PATCH] can: mark expected switch fall-throughs Message-ID: <20190129180612.GA28650@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: 1goXm2-0049dP-6P X-Source: X-Source-Args: X-Source-Dir: X-Source-Sender: (embeddedor) [189.250.130.205]:44894 X-Source-Auth: gustavo@embeddedor.com X-Email-Count: 9 X-Source-Cap: Z3V6aWRpbmU7Z3V6aWRpbmU7Z2F0b3I0MTY2Lmhvc3RnYXRvci5jb20= X-Local-Domain: yes X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190129_100616_828327_38274ED0 X-CRM114-Status: UNSURE ( 9.89 ) X-CRM114-Notice: Please train this message. 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: netdev@vger.kernel.org, "Gustavo A. R. Silva" , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-can@vger.kernel.org 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 warnings: drivers/net/can/peak_canfd/peak_pciefd_main.c:668:3: warning: this statement may fall through [-Wimplicit-fallthrough=] drivers/net/can/spi/mcp251x.c:875:7: warning: this statement may fall through [-Wimplicit-fallthrough=] drivers/net/can/usb/peak_usb/pcan_usb.c:422:6: warning: this statement may fall through [-Wimplicit-fallthrough=] drivers/net/can/at91_can.c:895:6: warning: this statement may fall through [-Wimplicit-fallthrough=] drivers/net/can/at91_can.c:953:15: warning: this statement may fall through [-Wimplicit-fallthrough=] drivers/net/can/usb/peak_usb/pcan_usb.c: In function ‘pcan_usb_decode_error’: drivers/net/can/usb/peak_usb/pcan_usb.c:422:6: warning: this statement may fall through [-Wimplicit-fallthrough=] if (n & PCAN_USB_ERROR_BUS_LIGHT) { ^ drivers/net/can/usb/peak_usb/pcan_usb.c:428:2: note: here case CAN_STATE_ERROR_WARNING: ^~~~ Warning level 3 was used: -Wimplicit-fallthrough=3 This patch is part of the ongoing efforts to enabling -Wimplicit-fallthrough. Notice that in some cases spelling mistakes were fixed. In other cases, the /* fall through */ comment is placed at the bottom of the case statement, which is what GCC is expecting to find. Signed-off-by: Gustavo A. R. Silva Acked-by: Nicolas Ferre --- drivers/net/can/at91_can.c | 6 ++++-- drivers/net/can/peak_canfd/peak_pciefd_main.c | 2 +- drivers/net/can/spi/mcp251x.c | 3 ++- drivers/net/can/usb/peak_usb/pcan_usb.c | 2 +- 4 files changed, 8 insertions(+), 5 deletions(-) diff --git a/drivers/net/can/at91_can.c b/drivers/net/can/at91_can.c index d98c69045b17..1718c20f9c99 100644 --- a/drivers/net/can/at91_can.c +++ b/drivers/net/can/at91_can.c @@ -902,7 +902,8 @@ static void at91_irq_err_state(struct net_device *dev, CAN_ERR_CRTL_TX_WARNING : CAN_ERR_CRTL_RX_WARNING; } - case CAN_STATE_ERROR_WARNING: /* fallthrough */ + /* fall through */ + case CAN_STATE_ERROR_WARNING: /* * from: ERROR_ACTIVE, ERROR_WARNING * to : ERROR_PASSIVE, BUS_OFF @@ -951,7 +952,8 @@ static void at91_irq_err_state(struct net_device *dev, netdev_dbg(dev, "Error Active\n"); cf->can_id |= CAN_ERR_PROT; cf->data[2] = CAN_ERR_PROT_ACTIVE; - case CAN_STATE_ERROR_WARNING: /* fallthrough */ + /* fall through */ + case CAN_STATE_ERROR_WARNING: reg_idr = AT91_IRQ_ERRA | AT91_IRQ_WARN | AT91_IRQ_BOFF; reg_ier = AT91_IRQ_ERRP; break; diff --git a/drivers/net/can/peak_canfd/peak_pciefd_main.c b/drivers/net/can/peak_canfd/peak_pciefd_main.c index c458d5fdc8d3..e4f4d65a76b4 100644 --- a/drivers/net/can/peak_canfd/peak_pciefd_main.c +++ b/drivers/net/can/peak_canfd/peak_pciefd_main.c @@ -668,7 +668,7 @@ static int pciefd_can_probe(struct pciefd_board *pciefd) pciefd_can_writereg(priv, CANFD_CLK_SEL_80MHZ, PCIEFD_REG_CAN_CLK_SEL); - /* fallthough */ + /* fall through */ case CANFD_CLK_SEL_80MHZ: priv->ucan.can.clock.freq = 80 * 1000 * 1000; break; diff --git a/drivers/net/can/spi/mcp251x.c b/drivers/net/can/spi/mcp251x.c index e90817608645..17257c73c302 100644 --- a/drivers/net/can/spi/mcp251x.c +++ b/drivers/net/can/spi/mcp251x.c @@ -875,7 +875,8 @@ static irqreturn_t mcp251x_can_ist(int irq, void *dev_id) if (new_state >= CAN_STATE_ERROR_WARNING && new_state <= CAN_STATE_BUS_OFF) priv->can.can_stats.error_warning++; - case CAN_STATE_ERROR_WARNING: /* fallthrough */ + /* fall through */ + case CAN_STATE_ERROR_WARNING: if (new_state >= CAN_STATE_ERROR_PASSIVE && new_state <= CAN_STATE_BUS_OFF) priv->can.can_stats.error_passive++; diff --git a/drivers/net/can/usb/peak_usb/pcan_usb.c b/drivers/net/can/usb/peak_usb/pcan_usb.c index 13238a72a338..eca785532b6b 100644 --- a/drivers/net/can/usb/peak_usb/pcan_usb.c +++ b/drivers/net/can/usb/peak_usb/pcan_usb.c @@ -423,7 +423,7 @@ static int pcan_usb_decode_error(struct pcan_usb_msg_context *mc, u8 n, new_state = CAN_STATE_ERROR_WARNING; break; } - /* else: fall through */ + /* fall through */ case CAN_STATE_ERROR_WARNING: if (n & PCAN_USB_ERROR_BUS_HEAVY) {