From patchwork Wed Nov 18 16:04:12 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marc Kleine-Budde X-Patchwork-Id: 327851 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D45E7C6379F for ; Wed, 18 Nov 2020 16:04:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7C317221FB for ; Wed, 18 Nov 2020 16:04:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727212AbgKRQEW (ORCPT ); Wed, 18 Nov 2020 11:04:22 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53800 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726826AbgKRQEV (ORCPT ); Wed, 18 Nov 2020 11:04:21 -0500 Received: from metis.ext.pengutronix.de (metis.ext.pengutronix.de [IPv6:2001:67c:670:201:290:27ff:fe1d:cc33]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B1EEBC0613D6 for ; Wed, 18 Nov 2020 08:04:20 -0800 (PST) Received: from gallifrey.ext.pengutronix.de ([2001:67c:670:201:5054:ff:fe8d:eefb] helo=blackshift.org) by metis.ext.pengutronix.de with esmtp (Exim 4.92) (envelope-from ) id 1kfPwQ-0001km-ST; Wed, 18 Nov 2020 17:04:18 +0100 From: Marc Kleine-Budde To: netdev@vger.kernel.org Cc: davem@davemloft.net, kuba@kernel.org, linux-can@vger.kernel.org, kernel@pengutronix.de, Jimmy Assarsson , Marc Kleine-Budde Subject: [net 2/4] can: kvaser_usb: kvaser_usb_hydra: Fix KCAN bittiming limits Date: Wed, 18 Nov 2020 17:04:12 +0100 Message-Id: <20201118160414.2731659-3-mkl@pengutronix.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20201118160414.2731659-1-mkl@pengutronix.de> References: <20201118160414.2731659-1-mkl@pengutronix.de> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2001:67c:670:201:5054:ff:fe8d:eefb X-SA-Exim-Mail-From: mkl@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: netdev@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Jimmy Assarsson Use correct bittiming limits for the KCAN CAN controller. Fixes: aec5fb2268b7 ("can: kvaser_usb: Add support for Kvaser USB hydra family") Signed-off-by: Jimmy Assarsson Link: https://lore.kernel.org/r/20201115163027.16851-2-jimmyassarsson@gmail.com Signed-off-by: Marc Kleine-Budde --- drivers/net/can/usb/kvaser_usb/kvaser_usb_hydra.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/can/usb/kvaser_usb/kvaser_usb_hydra.c b/drivers/net/can/usb/kvaser_usb/kvaser_usb_hydra.c index 7ab87a758754..218fadc91155 100644 --- a/drivers/net/can/usb/kvaser_usb/kvaser_usb_hydra.c +++ b/drivers/net/can/usb/kvaser_usb/kvaser_usb_hydra.c @@ -367,7 +367,7 @@ static const struct can_bittiming_const kvaser_usb_hydra_kcan_bittiming_c = { .tseg2_max = 32, .sjw_max = 16, .brp_min = 1, - .brp_max = 4096, + .brp_max = 8192, .brp_inc = 1, }; From patchwork Wed Nov 18 16:04:14 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marc Kleine-Budde X-Patchwork-Id: 327852 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A9E0AC6379D for ; Wed, 18 Nov 2020 16:04:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4EB9A2078E for ; Wed, 18 Nov 2020 16:04:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727402AbgKRQEW (ORCPT ); Wed, 18 Nov 2020 11:04:22 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53804 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726163AbgKRQEW (ORCPT ); Wed, 18 Nov 2020 11:04:22 -0500 Received: from metis.ext.pengutronix.de (metis.ext.pengutronix.de [IPv6:2001:67c:670:201:290:27ff:fe1d:cc33]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B7C62C0613D4 for ; Wed, 18 Nov 2020 08:04:21 -0800 (PST) Received: from gallifrey.ext.pengutronix.de ([2001:67c:670:201:5054:ff:fe8d:eefb] helo=blackshift.org) by metis.ext.pengutronix.de with esmtp (Exim 4.92) (envelope-from ) id 1kfPwR-0001km-PI; Wed, 18 Nov 2020 17:04:19 +0100 From: Marc Kleine-Budde To: netdev@vger.kernel.org Cc: davem@davemloft.net, kuba@kernel.org, linux-can@vger.kernel.org, kernel@pengutronix.de, Jarkko Nikula , Marc Kleine-Budde Subject: [net 4/4] can: m_can: process interrupt only when not runtime suspended Date: Wed, 18 Nov 2020 17:04:14 +0100 Message-Id: <20201118160414.2731659-5-mkl@pengutronix.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20201118160414.2731659-1-mkl@pengutronix.de> References: <20201118160414.2731659-1-mkl@pengutronix.de> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2001:67c:670:201:5054:ff:fe8d:eefb X-SA-Exim-Mail-From: mkl@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: netdev@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Jarkko Nikula Avoid processing bogus interrupt statuses when the HW is runtime suspended and the M_CAN_IR register read may get all bits 1's. Handler can be called if the interrupt request is shared with other peripherals or at the end of free_irq(). Therefore check the runtime suspended status before processing. Fixes: cdf8259d6573 ("can: m_can: Add PM Support") Signed-off-by: Jarkko Nikula Link: https://lore.kernel.org/r/20200915134715.696303-1-jarkko.nikula@linux.intel.com Signed-off-by: Marc Kleine-Budde --- drivers/net/can/m_can/m_can.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/can/m_can/m_can.c b/drivers/net/can/m_can/m_can.c index e7264043f79a..f3fc37e96b08 100644 --- a/drivers/net/can/m_can/m_can.c +++ b/drivers/net/can/m_can/m_can.c @@ -956,6 +956,8 @@ static irqreturn_t m_can_isr(int irq, void *dev_id) struct net_device_stats *stats = &dev->stats; u32 ir; + if (pm_runtime_suspended(cdev->dev)) + return IRQ_NONE; ir = m_can_read(cdev, M_CAN_IR); if (!ir) return IRQ_NONE;