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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 69964C636CC for ; Tue, 7 Feb 2023 22:50:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229843AbjBGWuA (ORCPT ); Tue, 7 Feb 2023 17:50:00 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41232 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229618AbjBGWt6 (ORCPT ); Tue, 7 Feb 2023 17:49:58 -0500 Received: from mga17.intel.com (mga17.intel.com [192.55.52.151]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 83F901B574; Tue, 7 Feb 2023 14:49:57 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1675810197; x=1707346197; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=r/v2d6ahiLeHME7Uo8KMcQBJwkAVFRLwEvDOoG0o7bw=; b=YQb8lLtj4x44zFLtzv3bHEeLFl8fVw5B4PhdZGm7rjm0GGA7+evWv5kq ChhzsfHNz0muLP4BkAY8AE6iZbsSkHuyacteTkrdu3BjRDMkVwi0awery +l1ZMmdUqLmGEtgphYHgdZaBAYSb1/7yw8K6gq/5wGIS7BRRnqCabJVef 5I1PtEZ0Pr1Q7VwsvnojYdUSvRpAkI0+Yoi+jgnAMeMphcFaU9h9mMLcs 7JuR7aIFTKpuz9eczYG5q1K/9SrZtyCNrOAO1qRvzaRNu8DtAVaJkXER2 KtdKKoJ5+7QIEQyJKEMW1XJO458gAuDS3CRKI5FTXUWmH3eH/RprWl3mK A==; X-IronPort-AV: E=McAfee;i="6500,9779,10614"; a="309990634" X-IronPort-AV: E=Sophos;i="5.97,279,1669104000"; d="scan'208";a="309990634" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by fmsmga107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 07 Feb 2023 14:49:57 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6500,9779,10614"; a="730627416" X-IronPort-AV: E=Sophos;i="5.97,279,1669104000"; d="scan'208";a="730627416" Received: from smile.fi.intel.com ([10.237.72.54]) by fmsmga008.fm.intel.com with ESMTP; 07 Feb 2023 14:49:55 -0800 Received: from andy by smile.fi.intel.com with local (Exim 4.96) (envelope-from ) id 1pPWmg-003ogf-0F; Wed, 08 Feb 2023 00:49:54 +0200 Date: Wed, 8 Feb 2023 00:49:53 +0200 From: Andy Shevchenko To: Mathias Nyman Cc: linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, Mathias Nyman , Greg Kroah-Hartman Subject: Re: [PATCH v1 2/7] xhci: mem: Use __GFP_ZERO instead of explicit memset() call Message-ID: References: <20230206161049.13972-1-andriy.shevchenko@linux.intel.com> <20230206161049.13972-3-andriy.shevchenko@linux.intel.com> <31a4cfbe-2c23-cda2-2d92-9d15a5d4bcb3@linux.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <31a4cfbe-2c23-cda2-2d92-9d15a5d4bcb3@linux.intel.com> Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Feb 07, 2023 at 05:11:23PM +0200, Mathias Nyman wrote: > On 6.2.2023 18.10, Andy Shevchenko wrote: > > Use __GFP_ZERO instead of explicit memset() call in > > xhci_alloc_stream_ctx(). ... > > + mem_flags |= __GFP_ZERO; > > How about calling dma_pool_zalloc() instead of setting __GFP_ZERO flag? > Memory returned by dma_alloc_coherent() should already be zeroed if I remember correctly That will work too. -- With Best Regards, Andy Shevchenko