From patchwork Mon Jul 12 06:10:15 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 472935 Delivered-To: patch@linaro.org Received: by 2002:a02:c94a:0:0:0:0:0 with SMTP id u10csp2664169jao; Sun, 11 Jul 2021 23:55:54 -0700 (PDT) X-Google-Smtp-Source: ABdhPJxFG/jPmpFxmlIz4sB6VQCuTXj+8UgYx9TtorsHF+d362IdUp6xOzwS+diZW6tlP9u5wpo6 X-Received: by 2002:a17:906:f11:: with SMTP id z17mr7541356eji.385.1626072868537; Sun, 11 Jul 2021 23:54:28 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1626072868; cv=none; d=google.com; s=arc-20160816; b=RIyU52AwxnpI6H02U/vaVIeLdPLiM8TuQTCOMxGbRK873gw+5cBoX1RZRZpEzxqeEl Y++iL6XlJ5WqJpDZbxa8z3EA5jB3SejiV8BkrvjSmujp+THif54zMU/IzNCnjTL7p2XX Msp3v9Vt3oiy1HSvDOEnPh/Zu9NqxRgB/iCiUe68ZgNNPODDCQTllt5oFduN60LYabXt OXn51aGin7sSjiKRl9OpdJmY7SymI0nkdpI1zjJz/5f/bYycrAbG7iCbGFypg7l20k29 5WoqdQh1l4iGIVWLwrI1wkvBWZ1fk1Gu7T8h06rHIl561+4YbRx8dT7WRxi0u0hj1kfk ZwmQ== 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=27Ib1EFG/Gg2WhqNxmksKZpM5ALoFY7ZSu/hMDwaqZw=; b=IjeIEb4+yqjrVCIs8kAapw7LN9sUz+3J3hkhtHnOMVDlVTEqFHv+5ejwuatQwl4bUK ITFSDKOSzzmVTjfDIhfzkUhW5XEbCvj4NLSvS9uPtFJ3Lek1z6JiBtz9iKnfNqgczHwT XIuRXIOHQs+HbMvTXEmOpRZLXxQG3+o6/OeDllY16mLKlTbMJ3F9SLR41Acx2xHEtn7c 69uQ6OAqUg7XU0k+z4KroWa6v7H5+lXZ2KRdyAiIjJc5AWWYMAhwhURCTDT2lrvPjgx9 Gs9z7RaNH2Ydw3NfknMvgPFbOo2T6+AQKnqA0CPUt44u+O/UBpVivGy7MmBLZMpnaNOw yROg== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@linuxfoundation.org header.s=korg header.b=GWDu7gDD; 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 r25si3440466edp.437.2021.07.11.23.54.28; Sun, 11 Jul 2021 23:54:28 -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=GWDu7gDD; 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 S237499AbhGLG4h (ORCPT + 12 others); Mon, 12 Jul 2021 02:56:37 -0400 Received: from mail.kernel.org ([198.145.29.99]:48056 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239028AbhGLGt1 (ORCPT ); Mon, 12 Jul 2021 02:49:27 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 7635F6127C; Mon, 12 Jul 2021 06:45:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1626072337; bh=ObxN3PxQho9jLulRk2KNDCkooGZl0fwjand2/1+2IHk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=GWDu7gDDtJvI+cU9Jex9CPRI3ZNjF0/TDPNJJtRg9xdiqOEZmQIUj/GUGYwH+TdZ2 Fe4liExl58pDmxrQfFKuMYw+SNkDVBHa4II5C4YFKTXVL7OhEwlsNCA9cSZ+cSczKs bKbJjnJh9hE+RVYwwrM3u9nNJb8trBux0/iou54Q= 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 5.10 455/593] iio: humidity: am2315: Fix buffer alignment in iio_push_to_buffers_with_timestamp() Date: Mon, 12 Jul 2021 08:10:15 +0200 Message-Id: <20210712060939.442322210@linuxfoundation.org> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20210712060843.180606720@linuxfoundation.org> References: <20210712060843.180606720@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 f4ca2e2595d9fee65d5ce0d218b22ce00e5b2915 ] 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: 0d96d5ead3f7 ("iio: humidity: Add triggered buffer support for AM2315") Signed-off-by: Jonathan Cameron Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20210501170121.512209-12-jic23@kernel.org Signed-off-by: Sasha Levin --- drivers/iio/humidity/am2315.c | 16 ++++++++++------ 1 file changed, 10 insertions(+), 6 deletions(-) -- 2.30.2 diff --git a/drivers/iio/humidity/am2315.c b/drivers/iio/humidity/am2315.c index 02ad1767c845..3398fa413ec5 100644 --- a/drivers/iio/humidity/am2315.c +++ b/drivers/iio/humidity/am2315.c @@ -33,7 +33,11 @@ struct am2315_data { struct i2c_client *client; struct mutex lock; - s16 buffer[8]; /* 2x16-bit channels + 2x16 padding + 4x16 timestamp */ + /* Ensure timestamp is naturally aligned */ + struct { + s16 chans[2]; + s64 timestamp __aligned(8); + } scan; }; struct am2315_sensor_data { @@ -167,20 +171,20 @@ static irqreturn_t am2315_trigger_handler(int irq, void *p) mutex_lock(&data->lock); if (*(indio_dev->active_scan_mask) == AM2315_ALL_CHANNEL_MASK) { - data->buffer[0] = sensor_data.hum_data; - data->buffer[1] = sensor_data.temp_data; + data->scan.chans[0] = sensor_data.hum_data; + data->scan.chans[1] = sensor_data.temp_data; } else { i = 0; for_each_set_bit(bit, indio_dev->active_scan_mask, indio_dev->masklength) { - data->buffer[i] = (bit ? sensor_data.temp_data : - sensor_data.hum_data); + data->scan.chans[i] = (bit ? sensor_data.temp_data : + sensor_data.hum_data); i++; } } mutex_unlock(&data->lock); - iio_push_to_buffers_with_timestamp(indio_dev, data->buffer, + iio_push_to_buffers_with_timestamp(indio_dev, &data->scan, pf->timestamp); err: iio_trigger_notify_done(indio_dev->trig);