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[2620:137:e000::1:20]) by mx.google.com with ESMTP id eb9-20020a0564020d0900b00425bc76ecddsi14216702edb.337.2022.05.16.20.14.10; Mon, 16 May 2022 20:14:35 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=bitwise.fi Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S244124AbiEPN4E (ORCPT + 99 others); Mon, 16 May 2022 09:56:04 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51116 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S243935AbiEPNzA (ORCPT ); Mon, 16 May 2022 09:55:00 -0400 Received: from mail.bitwise.fi (mail.bitwise.fi [109.204.228.163]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1F9042ACC; Mon, 16 May 2022 06:54:40 -0700 (PDT) Received: from localhost (localhost [127.0.0.1]) by mail.bitwise.fi (Postfix) with ESMTP id 3DFF646002E; Mon, 16 May 2022 16:49:04 +0300 (EEST) X-Virus-Scanned: Debian amavisd-new at Received: from mail.bitwise.fi ([127.0.0.1]) by localhost (mustetatti.dmz.bitwise.fi [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 1tcgcijmrJA4; Mon, 16 May 2022 16:49:02 +0300 (EEST) Received: from localhost.net (fw1.dmz.bitwise.fi [192.168.69.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: anssiha) by mail.bitwise.fi (Postfix) with ESMTPSA id 58193460031; Mon, 16 May 2022 16:48:57 +0300 (EEST) From: Anssi Hannula To: Jimmy Assarsson Cc: linux-can@vger.kernel.org, Marc Kleine-Budde , linux-kernel@vger.kernel.org Subject: [PATCH 10/12] can: kvaser_usb_leaf: Fix wrong CAN state after stopping Date: Mon, 16 May 2022 16:47:46 +0300 Message-Id: <20220516134748.3724796-11-anssi.hannula@bitwise.fi> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220516134748.3724796-1-anssi.hannula@bitwise.fi> References: <20220516134748.3724796-1-anssi.hannula@bitwise.fi> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,SPF_HELO_PASS, SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 0bfd:0124 Kvaser Mini PCI Express 2xHS FW 4.18.778 sends a CMD_CHIP_STATE_EVENT indicating bus-off after stopping the device, causing a stopped device to appear as CAN_STATE_BUS_OFF instead of CAN_STATE_STOPPED. Fix that by not handling error events on stopped devices. Fixes: 080f40a6fa28 ("can: kvaser_usb: Add support for Kvaser CAN/USB devices") Signed-off-by: Anssi Hannula --- drivers/net/can/usb/kvaser_usb/kvaser_usb_leaf.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/net/can/usb/kvaser_usb/kvaser_usb_leaf.c b/drivers/net/can/usb/kvaser_usb/kvaser_usb_leaf.c index 7ed2ced8ba08..742626e69dd8 100644 --- a/drivers/net/can/usb/kvaser_usb/kvaser_usb_leaf.c +++ b/drivers/net/can/usb/kvaser_usb/kvaser_usb_leaf.c @@ -879,6 +879,10 @@ static void kvaser_usb_leaf_rx_error(const struct kvaser_usb *dev, leaf = priv->sub_priv; stats = &priv->netdev->stats; + /* Ignore e.g. state change to bus-off reported just after stopping */ + if (!netif_running(priv->netdev)) + return; + /* Update all of the CAN interface's state and error counters before * trying any memory allocation that can actually fail with -ENOMEM. * -- 2.34.1