From patchwork Mon Jul 12 06:12:14 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 473055 Delivered-To: patch@linaro.org Received: by 2002:a02:c94a:0:0:0:0:0 with SMTP id u10csp2717228jao; Mon, 12 Jul 2021 01:15:50 -0700 (PDT) X-Google-Smtp-Source: ABdhPJz1NMDRBCEyvHdahjIMulBWY3+PnVmNNKHBRqpWkx8BDpUdgXRTZJnU+IpdA3+8yq/Yh9M8 X-Received: by 2002:a05:6402:2552:: with SMTP id l18mr64502895edb.363.1626077750012; Mon, 12 Jul 2021 01:15:50 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1626077750; cv=none; d=google.com; s=arc-20160816; b=xbjivBPHZzZ6nzEr8loEnV2w5ZzcXpXa/gdXTlrFw/XJPZ1jRpjpq07Z4qreIFqqkU T4Eb3t13PWZbKrL3GW+pdHlhDak2C2dXWVI9MvcxQLzuy1sqxkV85kxpOTZJCNWDy+h7 UX579FyEWDCU0SO/Crj7b9R56RuC2JrwjUX5LIotp3p8TkQBb/sOAn1ScxKfmFcg73TI AD/T53VlVL2/TDusH1C/1mbpW41Wzv5CeQZqfvjN6EFXKsta3ZAud9bvUlMYG4/c6ofd CwUZKoW6cZypgwLS0avY/iIXsRXbVv260wp6GfhkFbu0J0wo1sSo0rbycKWFreWOzRoE D/LQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :user-agent:references:in-reply-to:message-id:date:subject:cc:to :from:dkim-signature; bh=wASZyHHprMOJQVYZaMrTFQISjGjAZbDwkKlvdvipHMc=; b=WwPnTiuXbNUJGGK5UU5vB9LX2EsTNrBysXdHPXg5U2p6KjBYSHqrOEIuDlsDb3sNBL sTqst+/UksxF/eiZRRb6JaDS3UISoT4oM0gRx51aqnlOVGaYBCXjTu/TfPqku21cg0R3 7uogWqFYo+PbIAQ3NxVcWCrGmdjz3XsAL98IRsREvxEmDu8VaCfMgCHEzuy7s3t9mtaA IbkuTaWAgAmxUzuuEY3Ic2BMEG6xzc/H+91yMngUII6n23DYh6xpvXYM6nyKbY8nZd9x hewnWCQwO0/RSfP+O7gnYkNiPetOMO0QNek1tz9Gnr200CSsA3ib21YhR+qsZ6P/29Ej z7rg== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@linuxfoundation.org header.s=korg header.b=otjsAVtq; spf=pass (google.com: domain of stable-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=stable-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linuxfoundation.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id n21si13642925eda.13.2021.07.12.01.15.49; Mon, 12 Jul 2021 01:15:50 -0700 (PDT) Received-SPF: pass (google.com: domain of stable-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@linuxfoundation.org header.s=korg header.b=otjsAVtq; spf=pass (google.com: domain of stable-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=stable-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linuxfoundation.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1355726AbhGLIKS (ORCPT + 12 others); Mon, 12 Jul 2021 04:10:18 -0400 Received: from mail.kernel.org ([198.145.29.99]:55110 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1353667AbhGLICo (ORCPT ); Mon, 12 Jul 2021 04:02:44 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id ACD716145E; Mon, 12 Jul 2021 07:56:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1626076594; bh=sENWkQ5uR0IMnAxF0xKSzpMQnClAuWfwxn0h+ba6SMU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=otjsAVtqfzI03rEJNhA6tPSzbW9BRZG9miCX5up0YlroUX8CTIckIQeXZr+x8P0vP JH9y7V6EVH38oGqkOQ9w2hhnDq72MTw9gSJiKBKhtBDudgu67gEzJp3RgBwXkYbkfZ lsV7tNEOdZ5vmTgDJh+qOMsirHTHbvijLiIAbW+M= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Jonathan Cameron , Andreas Klinger , =?utf-8?q?Nuno_S=C3=A1?= , Sasha Levin Subject: [PATCH 5.13 711/800] iio: adc: mxs-lradc: Fix buffer alignment in iio_push_to_buffers_with_timestamp() Date: Mon, 12 Jul 2021 08:12:14 +0200 Message-Id: <20210712061042.366401833@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 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Jonathan Cameron [ Upstream commit 6a6be221b8bd561b053f0701ec752a5ed9007f69 ] To make code more readable, use a structure to express the channel layout and ensure the timestamp is 8 byte aligned. Add a comment on why the buffer is the size it is as not immediately obvious. Found during an audit of all calls of this function. Fixes: 6dd112b9f85e ("iio: adc: mxs-lradc: Add support for ADC driver") Signed-off-by: Jonathan Cameron Cc: Andreas Klinger Reviewed-by: Nuno Sá Link: https://lore.kernel.org/r/20210613152301.571002-4-jic23@kernel.org Signed-off-by: Sasha Levin --- drivers/iio/adc/mxs-lradc-adc.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) -- 2.30.2 diff --git a/drivers/iio/adc/mxs-lradc-adc.c b/drivers/iio/adc/mxs-lradc-adc.c index 30e29f44ebd2..c480cb489c1a 100644 --- a/drivers/iio/adc/mxs-lradc-adc.c +++ b/drivers/iio/adc/mxs-lradc-adc.c @@ -115,7 +115,8 @@ struct mxs_lradc_adc { struct device *dev; void __iomem *base; - u32 buffer[10]; + /* Maximum of 8 channels + 8 byte ts */ + u32 buffer[10] __aligned(8); struct iio_trigger *trig; struct completion completion; spinlock_t lock;