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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6EF74C433EF for ; Fri, 8 Jul 2022 18:49:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239740AbiGHStA (ORCPT ); Fri, 8 Jul 2022 14:49:00 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41856 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239739AbiGHSs7 (ORCPT ); Fri, 8 Jul 2022 14:48:59 -0400 Received: from mail-lf1-x136.google.com (mail-lf1-x136.google.com [IPv6:2a00:1450:4864:20::136]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 46A176309 for ; Fri, 8 Jul 2022 11:48:58 -0700 (PDT) Received: by mail-lf1-x136.google.com with SMTP id o7so8595206lfq.9 for ; Fri, 08 Jul 2022 11:48:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kvaser.com; s=google; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=8rAPQYweY/Yvbw9cJYhSKZPzz+mvOad6dri/BRhoHXA=; b=BqHjNfgwPJm2QA7jEcDZq1HyQ0oS5nYrL5rwglcwu7JYu70/jEnqMBH46KPmNC3vg8 kbY+U9AzC2Vpd4xUpJdxPBXTPpEN2co4lY5tyHjL4PDCDutOJjf5lT2/kC+pVllgzvD4 QxjBwa4+yXUg7yvUqjAVwcOEGMd9AJrCQktXq0Uac+eElPv7OFSgqtGiw/+H51ZZm/0T fK1/OVCZc+S17y6pcoKiFFgcJEHk8NyCBj69DwpL5fYj81j4/U4qWsUkkfGrhCLwJANr yQy2AXVR5vXoVWEpNhjRkfm5fA84bepjrayCgMDsERwq/bGwsiZ5utjefII5G9hjiKMG tYXA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=8rAPQYweY/Yvbw9cJYhSKZPzz+mvOad6dri/BRhoHXA=; b=u0XQEjnpHg6ZSNC8sU48lKGcvlMzXJdx6EHkNLwGEW4T9ASrb0R9mTkEiXY0AH58vR VP7WfAhSjV7pwAuWh9xYnXePz73qbAh5XWUWRZjyeSWLYXsT++BNnXB1G8l/+UpOuoR+ 7+58w0k0OYPUuzlrk2u5MfXo4Kh/sjTUIMCyPz5NgGCmbAmQJuQLCEzB+dEL6dkO+wAK /bv1nbkGu3Ej0tgtFi8czMuDVascHE3mpq1lznRs+hvGaMGIikswYZ/GfXbxkhPBvYwJ s7hvELmYFjlLdnCfbAfIkgPHLKtWUggflVPKG62rt7VQiP7HTi44dSqNmAw2Y5SfK1/B V12A== X-Gm-Message-State: AJIora9RCBjcLGtSgp/Lr7EJceEbIs5LBgV+Eu0I2H8Scd81TSbqeBeL L9Z0/mPtMX+xirGhtzJN8qtX5/sD1UiW1A== X-Google-Smtp-Source: AGRyM1sgIINPFWOoSQkBWkclVFGLDXGwzry5ixJ4F9snj7t7jJAox0XEMWhAd1rUTam5FLydWp6cOQ== X-Received: by 2002:a05:6512:3b91:b0:47f:769d:4ddc with SMTP id g17-20020a0565123b9100b0047f769d4ddcmr3019155lfv.624.1657306137854; Fri, 08 Jul 2022 11:48:57 -0700 (PDT) Received: from freke.kvaser.se (rota.kvaser.com. [195.22.86.90]) by smtp.gmail.com with ESMTPSA id b8-20020a056512218800b0047f7c897b61sm7541684lft.129.2022.07.08.11.48.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 08 Jul 2022 11:48:57 -0700 (PDT) From: Jimmy Assarsson To: stable@vger.kernel.org, linux-can@vger.kernel.org, Marc Kleine-Budde Cc: Jimmy Assarsson , Jimmy Assarsson Subject: [PATCH 5.15 0/3] can: kvaser_usb: CAN clock frequency regression Date: Fri, 8 Jul 2022 20:48:43 +0200 Message-Id: <20220708184846.281174-1-extja@kvaser.com> X-Mailer: git-send-email 2.36.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org Backport of upstream patch series [1]. When fixing the CAN clock frequency, fb12797ab1fe ("can: kvaser_usb: get CAN clock frequency from device"), I introduced a regression. For Leaf devices based on M32C, the firmware expects bittiming parameters calculated for 16MHz clock. Regardless of the actual clock frequency. This regression affects M32C based Leaf devices with non-16MHz clock. Also correct the bittiming constants in kvaser_usb_leaf.c, where the limits are different depending on which firmware/device being used. [1] https://lore.kernel.org/linux-can/20220603083820.800246-1-extja@kvaser.com/ Jimmy Assarsson (3): can: kvaser_usb: replace run-time checks with struct kvaser_usb_driver_info can: kvaser_usb: kvaser_usb_leaf: fix CAN clock frequency regression can: kvaser_usb: kvaser_usb_leaf: fix bittiming limits drivers/net/can/usb/kvaser_usb/kvaser_usb.h | 25 +- .../net/can/usb/kvaser_usb/kvaser_usb_core.c | 286 ++++++++++-------- .../net/can/usb/kvaser_usb/kvaser_usb_hydra.c | 4 +- .../net/can/usb/kvaser_usb/kvaser_usb_leaf.c | 119 ++++---- 4 files changed, 244 insertions(+), 190 deletions(-) -- 2.36.1