From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx1.white.stw.pengutronix.de (mx1.white.stw.pengutronix.de [185.203.200.13]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id BA61C502D5A; Mon, 28 Sep 2026 19:33:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=pass smtp.client-ip=185.203.200.13 ARC-Seal:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790624013; cv=pass; b=PrItr3UYNP6tvzRx9j18noanzMercHusX8UHgQS20hUqtONy8Hj+saZkscI8f+TGViTUBK73hXYiLld4c2kWd44Kxiz3cKR7NmgezU/NeA5wjMQhY6QM6vRSXvBsLiQHOFdk/qs42ysAWxxrTOsLJ3VvLlC75Iu36wjyzoVYCy0= ARC-Message-Signature:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790624013; c=relaxed/simple; bh=nv62Kjvjw2Se9Y1SZMQ/l/ptXvFA+AlrtiuFWTfdGlo=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=Gc/9Tw/2javQCO6V7TjW+SwuOyirlK+14crgJu1dVvNn8NA4Y8QrpELkcS5yr1iVank81GknetZ+BRLdWmgnbcIKnJoiSVSWiB75h04TZxprjjSxMHyZ7rlJkrEY/RvzIuHwrCsfp171UYX9Vh+HJ8+cQsN18CbRM/w8xtoyKs8= ARC-Authentication-Results:i=2; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=pengutronix.de; spf=pass smtp.mailfrom=pengutronix.de; dkim=pass (2048-bit key) header.d=pengutronix.de header.i=@pengutronix.de header.b=GTObDXZO; arc=pass smtp.client-ip=185.203.200.13 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=pengutronix.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=pengutronix.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=pengutronix.de header.i=@pengutronix.de header.b="GTObDXZO" Received: from drehscheibe.grey.stw.pengutronix.de (drehscheibe.grey.stw.pengutronix.de [IPv6:2a0a:edc0:0:c01:1d::a2]) (Authenticated sender: relay-from-drehscheibe.grey.stw.pengutronix.de) by mx1.white.stw.pengutronix.de (Postfix) with ESMTPSA id E9A4F2022E0; Mon, 28 Sep 2026 21:33:16 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=pengutronix.de; s=20260414; t=1790623996; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=lfLX0FVn5KXNuLwBvoZh4vQ7hK3XXJBqTaCubH8TshI=; b=GTObDXZOm2EinUuYigMQ7Dx2ovR0h5W5SEmW32CMeI6GhI0Zp4M9wJXcLbqJxm492VxFbD A1XmytrxggUJF9tzOhfvqEgISNCDqtYQ2HOvSpTJ3vf9cPHPp+HQ+toB9XNi1u9BeD7bsX /NEDizONpLY7TkCzxKy7dRvJuVixRhCd4vyNBS0s+wmoEyFFNtAcy3PO5+ilRuijRNX+PM /4xdD7qn6iKvTvoUl4X4rxJMvhHmTSqX5vuTvc6KZzb0HAd7tA2Z98rbOxDRZS/DFiOSbD oOticB6+xg/TLDwwuZeCpQmAmt8EpaYJx+RMnoveXSPm+wZkkMdgUTwp1DVbUQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=pengutronix.de; s=20260414; t=1790623996; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=lfLX0FVn5KXNuLwBvoZh4vQ7hK3XXJBqTaCubH8TshI=; b=Jx2bDwbCFzeqGuUWjK/fK+bBNQ4J0RjxRzc7GQBMIVSxT0s5wkfPQDxlAXmtIQLHFFBgvv 7tMSVL4+fnxodTkfPVm7IDzZHRxY3C+Jkj2b4RSroeKGOOSnpCJmcsnaYYaqKn2+YosYaj XU+qaeSYqQ4z3RW3661+tzsGQo9eP/8ThHBWSo9UtupYORlHdNcpNRONjNP4Mqu8wPLwv4 sFcdOGcg8mlSG18Z3rKwBASQzK/P6DLcEtEralem2jIq77sGwp6vIlCrJA53PSUwRVXC3Z ronOuI3K0gGHid1AyzOjnM3UBEmlUV+aebajNCLXEIiONSBE27YiiiNtRGREKw== ARC-Seal: i=1; s=20260414; d=pengutronix.de; t=1790623996; a=rsa-sha256; cv=none; b=OvO+45Kz6ihwZxr0HHpDhs+MaSSJLI4Yex8Tz2afHMH85YVp7+Easemza98pgYZmqoktmI SGybS8CswgWS7sv1V6cfYw9UHwnWjX1Yfq3Dtm1ccEQSkuWEGqmNUU0xlNfqBzmJmnL+K5 r4x67096koSbdiHo2BSbiZv92/GWnKj8TvIlINuYF/f9hcKxyg/BKocNfyYGwHSE6B9VRF 458tViGb/PNGgpBjlXuAR7WgsuMHr6eOzw4x4vSV8thvBkgjK1X7LA64XeuV3CVGPt9dGK gBOeWCRnTA4xvkb1gCa3On83Yz3PBhpGtbH4ouOeDeYa05DIXKx6mka/XJPueQ== ARC-Authentication-Results: i=1; ORIGINATING; auth=pass smtp.auth=relay-from-drehscheibe.grey.stw.pengutronix.de smtp.mailfrom=mkl@pengutronix.de Received: from moin.white.stw.pengutronix.de ([2a0a:edc0:0:b01:1d::7b] helo=bjornoya.blackshift.org) by drehscheibe.grey.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1xBH6C-003H6o-2X; Mon, 28 Sep 2026 21:33:16 +0200 Received: from blackshift.org (p4ffb23c7.dip0.t-ipconnect.de [79.251.35.199]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519MLKEM768 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) (Authenticated sender: mkl-all@blackshift.org) by smtp.blackshift.org (Postfix) with ESMTPSA id 865575B155D; Mon, 28 Sep 2026 19:33:16 +0000 (UTC) From: Marc Kleine-Budde To: netdev@vger.kernel.org Cc: davem@davemloft.net, kuba@kernel.org, linux-can@vger.kernel.org, kernel@pengutronix.de, =?UTF-8?q?Stefan=20G=C3=BCnther?= , stable@vger.kernel.org, Marc Kleine-Budde Subject: [PATCH net 22/22] can: peak_usb: fix missing CAN_ERR_FLAG when reporting error counters Date: Mon, 28 Sep 2026 20:45:29 +0200 Message-ID: <20260928193312.553632-23-mkl@pengutronix.de> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260928193312.553632-1-mkl@pengutronix.de> References: <20260928193312.553632-1-mkl@pengutronix.de> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Stefan Günther When the device reports error counters, the driver incorrectly uses an assignment (=) instead of a bitwise OR (|=) for CAN_ERR_CNT. This wipes out the CAN_ERR_FLAG and CAN_ERR_CRTL flags, causing the error frame to be sent to userspace as a regular CAN frame with ID 0x200. Fix this by using a bitwise OR to preserve the flags. Signed-off-by: Stefan Günther Link: https://patch.msgid.link/20260915134551.54038-1-stefangun@pm.me Cc: stable@vger.kernel.org Fixes: 3e5c291c7942 ("can: add CAN_ERR_CNT flag to notify availability of error counter") Signed-off-by: Marc Kleine-Budde --- drivers/net/can/usb/peak_usb/pcan_usb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/can/usb/peak_usb/pcan_usb.c b/drivers/net/can/usb/peak_usb/pcan_usb.c index 8fd058c32856..785224e00c4e 100644 --- a/drivers/net/can/usb/peak_usb/pcan_usb.c +++ b/drivers/net/can/usb/peak_usb/pcan_usb.c @@ -526,7 +526,7 @@ static int pcan_usb_decode_error(struct pcan_usb_msg_context *mc, u8 n, /* Supply TX/RX error counters in case of * controller error. */ - cf->can_id = CAN_ERR_CNT; + cf->can_id |= CAN_ERR_CNT; cf->data[6] = mc->pdev->bec.txerr; cf->data[7] = mc->pdev->bec.rxerr; } -- 2.53.0