From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3DEA328E5F3; Tue, 15 Apr 2025 09:41:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.19 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744710064; cv=none; b=uLOhC+9f8Op8jwItDp0vBM9ALqh37eUs2Iapoq2jSWxwcijfkjO3AyxFT3whzUIo5E6MpdkzkKztqHfSNZH70PZHm31xR4BeCHJetFbKokjQ6cTxE87kTQpzXJ2TNhZaHz0Zo+L1Qi/rlKmdlVBcs5GdL4A9ahq/YXhtuUfREgw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744710064; c=relaxed/simple; bh=70bZEoBDBdJu5amD+c19gKRho0A75jQlvPN/S4VEHNg=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=B8ZryYaOykN2rllf5QTVMNVZoiYbSUkhIah3Hpja8vj3vMTMtYWPub7DZrNlGprM5DXqB6DxCvyVFLS7tEOqmYvXU8ApG1t0D503gSl2D+eUIolYduUZJ+BrcVPrfOsWbeyL5Y9lmB2iexiGEtPFSBLWOLGibCQklywE8BEVlWQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=none smtp.mailfrom=linux.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=fp6aFH3N; arc=none smtp.client-ip=198.175.65.19 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="fp6aFH3N" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1744710063; x=1776246063; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=70bZEoBDBdJu5amD+c19gKRho0A75jQlvPN/S4VEHNg=; b=fp6aFH3NCHksuovCuCr9dkMxgDrb3QUFns/zQby7RP8WgZqPhRTG4UBc iSebNJPP6uxwmAamqRj3oAhPYoZKiIBvrH4O0mwxqH6WZVvldvbJI9GlB rAVVunvrrJ2uhuijceRdMUjHTbPXzjboelsJW4HFcuTH+BXpzOZmQDsff IWOvJB3vHAlSkdsHoAYtYYWcyWJvyXVIj5RhrV3vwbfLQ0g1Y17AH61th UemTB1qnjpRBFcqg2O3CgYtu7mkit1Jtkx2Twnb6JCMNEgMhSQ4tCMZp5 DP6Qm+aDui/NvNbBH5XQ270yD/EFiOzoj83OdR5LVG+XsZaPyEmaS/8HZ Q==; X-CSE-ConnectionGUID: SoFdeKiqSM25InKOCFqgkw== X-CSE-MsgGUID: aodAkcTFR9GfGAi3B/wQpA== X-IronPort-AV: E=McAfee;i="6700,10204,11403"; a="46098084" X-IronPort-AV: E=Sophos;i="6.15,213,1739865600"; d="scan'208";a="46098084" Received: from orviesa006.jf.intel.com ([10.64.159.146]) by orvoesa111.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 15 Apr 2025 02:39:56 -0700 X-CSE-ConnectionGUID: yyQqDLo8Rei+/IWq17FlZg== X-CSE-MsgGUID: +fd38e0cTS6fTRwGNnjWeQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.15,213,1739865600"; d="scan'208";a="130034398" Received: from smile.fi.intel.com ([10.237.72.58]) by orviesa006.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 15 Apr 2025 02:39:53 -0700 Received: from andy by smile.fi.intel.com with local (Exim 4.98.2) (envelope-from ) id 1u4cli-0000000CVPR-1PbB; Tue, 15 Apr 2025 12:39:50 +0300 Date: Tue, 15 Apr 2025 12:39:50 +0300 From: Andy Shevchenko To: Marek Szyprowski Cc: iommu@lists.linux.dev, linux-kernel@vger.kernel.org, Christoph Hellwig , Robin Murphy , netdev@vger.kernel.org, Jakub Kicinski Subject: Re: [PATCH] dma-mapping: avoid potential unused data compilation warning Message-ID: References: <20250415075659.428549-1-m.szyprowski@samsung.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250415075659.428549-1-m.szyprowski@samsung.com> Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo On Tue, Apr 15, 2025 at 09:56:59AM +0200, Marek Szyprowski wrote: > When CONFIG_NEED_DMA_MAP_STATE is not defined, dma-mapping clients might > report unused data compilation warnings for dma_unmap_*() calls > arguments. Redefine macros for those calls to let compiler to notice that > it is okay when the provided arguments are not used. Tested-by: Andy Shevchenko (GCC on default i386_defconfig with `make W=1` on v6.15-rc2) -- With Best Regards, Andy Shevchenko