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 X-Spam-Level: X-Spam-Status: No, score=-19.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 605B1C07E9C for ; Mon, 12 Jul 2021 09:03:26 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5048061026 for ; Mon, 12 Jul 2021 09:03:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1382692AbhGLJCA (ORCPT ); Mon, 12 Jul 2021 05:02:00 -0400 Received: from mail.kernel.org ([198.145.29.99]:55268 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1352747AbhGLH7o (ORCPT ); Mon, 12 Jul 2021 03:59:44 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 11C18619B3; Mon, 12 Jul 2021 07:53:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1626076414; bh=FMiubnISiMI2iY0NdN5wTlY0ucMqsT2sp82WSl3hFSE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=IQoxbxxBSlj9DTHUcGBikLaofAX89tcOSit8ldFNfk618GyMDvI3YxJWe+Tfhx0P1 Iv+cHtwSCAbPNQ7l6agz48SMRSKwWImcJ/8Hs5TiSx7PdqlNFNMmFto2ljK5WOS0oQ pHdwk9QazbwHkMFVAHxMWdzHB2bqu5mOISTJ1lwg= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Jonathan Cameron , Andy Shevchenko , Sasha Levin Subject: [PATCH 5.13 633/800] iio: light: tcs3414: Fix buffer alignment in iio_push_to_buffers_with_timestamp() Date: Mon, 12 Jul 2021 08:10:56 +0200 Message-Id: <20210712061034.498578145@linuxfoundation.org> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20210712060912.995381202@linuxfoundation.org> References: <20210712060912.995381202@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Jonathan Cameron [ Upstream commit ff08fbc22ab32ccc6690c21b0e5e1d402dcc076f ] To make code more readable, use a structure to express the channel layout and ensure the timestamp is 8 byte aligned. Found during an audit of all calls of uses of iio_push_to_buffers_with_timestamp() Fixes: a244e7b57f0f ("iio: Add driver for AMS/TAOS tcs3414 digital color sensor") Signed-off-by: Jonathan Cameron Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20210501170121.512209-19-jic23@kernel.org Signed-off-by: Sasha Levin --- drivers/iio/light/tcs3414.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/drivers/iio/light/tcs3414.c b/drivers/iio/light/tcs3414.c index 6fe5d46f80d4..0593abd600ec 100644 --- a/drivers/iio/light/tcs3414.c +++ b/drivers/iio/light/tcs3414.c @@ -53,7 +53,11 @@ struct tcs3414_data { u8 control; u8 gain; u8 timing; - u16 buffer[8]; /* 4x 16-bit + 8 bytes timestamp */ + /* Ensure timestamp is naturally aligned */ + struct { + u16 chans[4]; + s64 timestamp __aligned(8); + } scan; }; #define TCS3414_CHANNEL(_color, _si, _addr) { \ @@ -209,10 +213,10 @@ static irqreturn_t tcs3414_trigger_handler(int irq, void *p) if (ret < 0) goto done; - data->buffer[j++] = ret; + data->scan.chans[j++] = ret; } - iio_push_to_buffers_with_timestamp(indio_dev, data->buffer, + iio_push_to_buffers_with_timestamp(indio_dev, &data->scan, iio_get_time_ns(indio_dev)); done: -- 2.30.2