From patchwork Wed Feb 28 20:41:35 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andy Shevchenko X-Patchwork-Id: 13575968 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id E7AA6C5478C for ; Wed, 28 Feb 2024 20:50:14 +0000 (UTC) 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:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version: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=Pb2cjhctSjwdgn48MBitkjnagnAgFB7zmbGyd1NeNOU=; b=eRBGYTv4FhrcYZ +SUr/8P8O5iJwXarJkWb4zZgYXbW2NQJmmJYAEL0lax0bVA+GrmFJXKrrNdwUnG9ZZ3s+/dnEj/Us i5jAhuFHJCct+dWLElJ3QWnjnbUGGzMnXYYGuVT/eguTi7XO8chZrm7725qnlUlvS41K+O0dJ9LNN 6ofKyiSgYWIWPiOiHunARxFXVlOLABPzLobL165zw14sF1yAFn9SCP81SAz9D6bXNV2CMP9fL/O2J 1o3pFi+YSNah0FTfWiU113rdRSA1IztQu5WZxXT/UmBsNr1eQLFM5OQCsqb0m80RgCko8KSyw5AE0 yfuaQVeMGc3LwhaOw2YA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rfQsK-0000000AtGo-47xJ; Wed, 28 Feb 2024 20:50:00 +0000 Received: from mgamail.intel.com ([192.198.163.17]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rfQs8-0000000At9L-0RWM for linux-arm-kernel@lists.infradead.org; Wed, 28 Feb 2024 20:49:49 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1709153388; x=1740689388; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=R9j+Q0D/kA76h1U7UfPAGebwhkhuz8MuAm681KRIxuM=; b=lzvgQX7dZu4f6YrJlOMYTKNoU18zl/LQvhBde5z6BP4SO+LBslH0Fvbf pL4rbYBwVqNPOZ2JlK3pIQIPJxStuQU8OxlKiZtJMooZUYnUQjHmnKS5R E5eMdUm8JMnfhDPGwZUpnJ6KX3UVosgLsfnJsvX20pCNneksEQiVIvrAi uhGqLQ+7q6H4zVBdJMDevYpIDSqYhIWIL6yj3QUWYFNSdRF5zR+oNyI9J 1f58ogcsphCl5RI/q1XoMm7KKUWLPTM1SyEG1/wg2o6+3ndrfm+tbcTDh Zbq5Ykk5mqZZSd8S+O5TSysmz/aFpsyWhBxMLubj59+ptIGc4EPeb1Qkp A==; X-IronPort-AV: E=McAfee;i="6600,9927,10998"; a="3428779" X-IronPort-AV: E=Sophos;i="6.06,191,1705392000"; d="scan'208";a="3428779" Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmvoesa111.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 28 Feb 2024 12:49:46 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10998"; a="937034662" X-IronPort-AV: E=Sophos;i="6.06,191,1705392000"; d="scan'208";a="937034662" Received: from black.fi.intel.com ([10.237.72.28]) by fmsmga001.fm.intel.com with ESMTP; 28 Feb 2024 12:49:41 -0800 Received: by black.fi.intel.com (Postfix, from userid 1003) id 47C0A537; Wed, 28 Feb 2024 22:49:34 +0200 (EET) From: Andy Shevchenko To: Vinod Koul , Linus Walleij , Jonathan Cameron , Andy Shevchenko , Mark Brown , Kees Cook , linux-arm-kernel@lists.infradead.org, dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org, linux-iio@vger.kernel.org, linux-spi@vger.kernel.org, netdev@vger.kernel.org, linux-hardening@vger.kernel.org Cc: Jonathan Cameron , Lars-Peter Clausen , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , "Gustavo A. R. Silva" , Nuno Sa Subject: [PATCH v4 5/8] iio: core: Use new helpers from overflow.h in iio_device_alloc() Date: Wed, 28 Feb 2024 22:41:35 +0200 Message-ID: <20240228204919.3680786-6-andriy.shevchenko@linux.intel.com> X-Mailer: git-send-email 2.43.0.rc1.1.gbec44491f096 In-Reply-To: <20240228204919.3680786-1-andriy.shevchenko@linux.intel.com> References: <20240228204919.3680786-1-andriy.shevchenko@linux.intel.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240228_124948_220202_A46063DC X-CRM114-Status: GOOD ( 11.77 ) 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: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org We have two new helpers struct_size_with_data() and struct_data_pointer() that we can utilize in iio_device_alloc(). Do it so. Signed-off-by: Andy Shevchenko Reviewed-by: Nuno Sa --- drivers/iio/industrialio-core.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c index 1986b3386307..223013725e32 100644 --- a/drivers/iio/industrialio-core.c +++ b/drivers/iio/industrialio-core.c @@ -1644,7 +1644,7 @@ struct iio_dev *iio_device_alloc(struct device *parent, int sizeof_priv) size_t alloc_size; if (sizeof_priv) - alloc_size = ALIGN(alloc_size, IIO_DMA_MINALIGN) + sizeof_priv; + alloc_size = struct_size_with_data(iio_dev_opaque, IIO_DMA_MINALIGN, sizeof_priv); else alloc_size = sizeof(struct iio_dev_opaque); @@ -1655,8 +1655,7 @@ struct iio_dev *iio_device_alloc(struct device *parent, int sizeof_priv) indio_dev = &iio_dev_opaque->indio_dev; if (sizeof_priv) - indio_dev->priv = (char *)iio_dev_opaque + - ALIGN(sizeof(struct iio_dev_opaque), IIO_DMA_MINALIGN); + indio_dev->priv = struct_data_pointer(iio_dev_opaque, IIO_DMA_MINALIGN); else indio_dev->priv = NULL;