From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A2270C388F7 for ; Mon, 9 Nov 2020 11:49:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 45E5B20731 for ; Mon, 9 Nov 2020 11:49:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1604922599; bh=2Pr2Q3ugfT6NO8YZithe0fGBp63/IvbYBELWwyxvsBk=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=wdFexZ6LCYwAJzOxz9Q7FmWGl588e9zjSiHng8JWnN2b/UA/Jjdw6cH9J/4KxdCdH vbks5Nvb42hV9F0eu5Kc8aZYC2l9lFV0xzGbznC2fVZfXUhws3vv79e2cbKQHcYnWG DpJ9LHZ/FRHl+yYPRqCnXfRjQ9d8Z2kMbtJES/S4= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729090AbgKILt7 (ORCPT ); Mon, 9 Nov 2020 06:49:59 -0500 Received: from mail.kernel.org ([198.145.29.99]:36186 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726410AbgKILt6 (ORCPT ); Mon, 9 Nov 2020 06:49:58 -0500 Received: from localhost (unknown [122.171.147.34]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 7EF65206ED; Mon, 9 Nov 2020 11:49:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1604922598; bh=2Pr2Q3ugfT6NO8YZithe0fGBp63/IvbYBELWwyxvsBk=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=LWWhrdYW0iIhfVT+SZIPOYUk5BwFnyrXtt1ayKI3aBAylDn0432w7DmqgLfihXAMp 4lROVVoPyI0IGKCMKA0vtXEmHm9d7yveWgWDopsZo4nnVw/oIMxDIRdUI2x7Vu9Rot tegRC+pFDl98r3ZvM6fbRatCfUWZIBr7/zVaAoU0= Date: Mon, 9 Nov 2020 17:19:54 +0530 From: Vinod Koul To: Andy Shevchenko Cc: Viresh Kumar , dmaengine@vger.kernel.org, Dan Williams , Serge Semin Subject: Re: [PATCH v1] dmaengine: dw: Enable runtime PM Message-ID: <20201109114954.GK3171@vkoul-mobl> References: <20201103183938.64752-1-andriy.shevchenko@linux.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20201103183938.64752-1-andriy.shevchenko@linux.intel.com> Precedence: bulk List-ID: X-Mailing-List: dmaengine@vger.kernel.org On 03-11-20, 20:39, Andy Shevchenko wrote: > When consumer requests channel power on the DMA controller device > and otherwise on the freeing channel resources. > > Note, in some cases consumer acquires channel at the ->probe() stage and > releases it at the ->remove() stage. It will mean that DMA controller device > will be powered during all this time if there is no assist from hardware > to idle it. The above mentioned cases should be investigated separately > and individually. Applied, thanks -- ~Vinod