Received: by 2002:a05:6a10:22f:0:0:0:0 with SMTP id 15csp1803366pxk; Tue, 1 Sep 2020 08:11:01 -0700 (PDT) X-Google-Smtp-Source: ABdhPJzYW4s89RLabHf6v2ocSg/crLY/X88Mvi4r/5gRCahw6avjr9mxuMaV831Y+Al2GjilH638 X-Received: by 2002:a17:906:a141:: with SMTP id bu1mr1823756ejb.303.1598973061381; Tue, 01 Sep 2020 08:11:01 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1598973061; cv=none; d=google.com; s=arc-20160816; b=DnBhD8dQ4f36vuzhhmida5DS3JSBHE/HLHXeQF8OzRWWfDkupgLYJSpso614MuOGj6 ylAj+orSPB69Ev+EWbI/XwH6dMSNAKYdsz58Mdjd/due67tUh9P8yug05qEXtcotVQFU pDkT43ESLb/ijwThfoUcLME18UhGZJRNK6fgsEJMdd5g7ubTxtl3U8L8LVSZHUpvHsAy 0qmDYQV5ysZbM33hP4hfmcmRV6D8Fmk50QByGMz5az6bAEypuqCFL7vY1agYrTmNRM1v bOGPeI90HKr6rEFaxxbistsl6nYPX7BunWfG445/lqnxATqtYjlaJ6vbga5QThvS6rCq 37SQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:user-agent:in-reply-to :content-disposition:mime-version:references:message-id:subject:cc :to:from:date; bh=TIBgWeMm+ioHajnL7Wj4i6EsX2LWGsutv7h2+iULaas=; b=RtkZaARY9BiA9i9R4feZwbNwTJkkHDEaHtaaX5OwkAUSB/4Pr+Y7SWrV8hgsFJT5lW 8kqGyGTk21Cu6y/OxzozwzdC9HR4ouAodU8WD5WvAWEu5t5LknVMbS6/0jOnazwY1ld8 YEx7sd6vakLjsRlzAb3k1oM9X1YuU2FJrWJtTkb4gUWZnnnHWYS9awKJZuK8tL27uybl H8NW4CN46LJAX5nFRnYCpTBVh/++ZnQfK4L2i7RQCuAz3AX/34OeinxmSzB1YH0Hj69R zVvVd+qSm3pW5FEcPCQdHWlrBKpbHC/snrPiP6A4pJtZHTdcNWF05M9eUBl6gkSGDubY 70SQ== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id cz6si773136edb.350.2020.09.01.08.10.32; Tue, 01 Sep 2020 08:11:01 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728337AbgIAPHY (ORCPT + 99 others); Tue, 1 Sep 2020 11:07:24 -0400 Received: from verein.lst.de ([213.95.11.211]:53716 "EHLO verein.lst.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727886AbgIAPG5 (ORCPT ); Tue, 1 Sep 2020 11:06:57 -0400 Received: by verein.lst.de (Postfix, from userid 2407) id 103C368B05; Tue, 1 Sep 2020 17:06:55 +0200 (CEST) Date: Tue, 1 Sep 2020 17:06:54 +0200 From: Christoph Hellwig To: Ulf Hansson Cc: linux-mmc@vger.kernel.org, Rich Felker , Christoph Hellwig , Mark Brown , linux-sh@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2] mmc: mmc_spi: Allow the driver to be built when CONFIG_HAS_DMA is unset Message-ID: <20200901150654.GB30034@lst.de> References: <20200901150438.228887-1-ulf.hansson@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200901150438.228887-1-ulf.hansson@linaro.org> User-Agent: Mutt/1.5.17 (2007-11-01) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Sep 01, 2020 at 05:04:38PM +0200, Ulf Hansson wrote: > +#ifdef CONFIG_HAS_DMA > +static int mmc_spi_dma_alloc(struct mmc_spi_host *host) > +{ > + struct spi_device *spi = host->spi; > + struct device *dev; > + > + if (!spi->master->dev.parent->dma_mask) > + return 0; I still don't think this makes sense, as the dma_mask should always be non-NULL here.