From patchwork Mon Jul 12 14:18:17 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Cristian Marussi X-Patchwork-Id: 12371263 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=-17.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,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 E5180C07E9C for ; Mon, 12 Jul 2021 14:21:16 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id B110B610A7 for ; Mon, 12 Jul 2021 14:21:16 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B110B610A7 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:List-Subscribe:List-Help: List-Post:List-Archive:List-Unsubscribe:List-Id:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=5fofMxmxeRO04126Qgr1Ra/TiJoj3Frrzwrx9TrFJ8w=; b=1JHt6m3rQ0EQyk JT8ttiiy2f/QZAjXsPI9MI9Mp6KicDqdXKoufdlP/nA427UyPgfd4w802XmAFLRRYqZIxsEZmVHuP zS7pnoagXKAgAweJo2ua+YLg4OULda4h3BrpWmExKjpHtrQBtQdVHVQeDk72QSKdpu+T+ylV+ZQ4l ZtwQV2scbMeqlcGcvcIVmXD3jZlJuQj9uubygChjbFdlhuB0QeIJntX3xaUZ39ImWUzz/YkfGK73j JQP1+9JFujt38JyzHJCOfKOoMOJH1hFAV8FV4/iQhW/87ySULLGNhK3t/Vgfi03hUfSJn2tQxkOg6 LS64xp8bbYsZifQ5ASwg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1m2wmR-007U6w-4M; Mon, 12 Jul 2021 14:19:31 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1m2wm2-007U1R-WF for linux-arm-kernel@lists.infradead.org; Mon, 12 Jul 2021 14:19:09 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 820F931B; Mon, 12 Jul 2021 07:19:00 -0700 (PDT) Received: from e120937-lin.home (unknown [172.31.20.19]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 2F5853F774; Mon, 12 Jul 2021 07:18:57 -0700 (PDT) From: Cristian Marussi To: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, virtualization@lists.linux-foundation.org, virtio-dev@lists.oasis-open.org Cc: sudeep.holla@arm.com, james.quinlan@broadcom.com, Jonathan.Cameron@Huawei.com, f.fainelli@gmail.com, etienne.carriere@linaro.org, vincent.guittot@linaro.org, souvik.chakravarty@arm.com, cristian.marussi@arm.com, igor.skalkin@opensynergy.com, peter.hilber@opensynergy.com, alex.bennee@linaro.org, jean-philippe@linaro.org, mikhail.golubev@opensynergy.com, anton.yakovlev@opensynergy.com, Vasyl.Vavrychuk@opensynergy.com, Andriy.Tryshnivskyy@opensynergy.com Subject: [PATCH v6 01/17] firmware: arm_scmi: Avoid padding in sensor message structure Date: Mon, 12 Jul 2021 15:18:17 +0100 Message-Id: <20210712141833.6628-2-cristian.marussi@arm.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210712141833.6628-1-cristian.marussi@arm.com> References: <20210712141833.6628-1-cristian.marussi@arm.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210712_071907_140091_16ED5C75 X-CRM114-Status: GOOD ( 10.41 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Structure scmi_resp_sensor_reading_complete is meant to represent an SCMI asynchronous reading complete message: representing the readings field with a 64bit type forces padding and breaks reads in scmi_sensor_reading_get. Split it in two adjacent 32bit readings_low/high subfields to avoid padding or the need to make it packed. Fixes: e2083d3673916 ("firmware: arm_scmi: Add SCMI v3.0 sensors timestamped reads") Signed-off-by: Cristian Marussi --- drivers/firmware/arm_scmi/sensors.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/firmware/arm_scmi/sensors.c b/drivers/firmware/arm_scmi/sensors.c index 2c88aa221559..308471586381 100644 --- a/drivers/firmware/arm_scmi/sensors.c +++ b/drivers/firmware/arm_scmi/sensors.c @@ -166,7 +166,8 @@ struct scmi_msg_sensor_reading_get { struct scmi_resp_sensor_reading_complete { __le32 id; - __le64 readings; + __le32 readings_low; + __le32 readings_high; }; struct scmi_sensor_reading_resp { @@ -717,7 +718,8 @@ static int scmi_sensor_reading_get(const struct scmi_protocol_handle *ph, resp = t->rx.buf; if (le32_to_cpu(resp->id) == sensor_id) - *value = get_unaligned_le64(&resp->readings); + *value = + get_unaligned_le64(&resp->readings_low); else ret = -EPROTO; }