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=-2.5 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 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 F18E4C433E0 for ; Sun, 28 Jun 2020 07:10:24 +0000 (UTC) Received: from silver.osuosl.org (smtp3.osuosl.org [140.211.166.136]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 7FB7C20775 for ; Sun, 28 Jun 2020 07:10:24 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7FB7C20775 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=iommu-bounces@lists.linux-foundation.org Received: from localhost (localhost [127.0.0.1]) by silver.osuosl.org (Postfix) with ESMTP id 28A8E204E6; Sun, 28 Jun 2020 07:10:24 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from silver.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id ma5VhNIV4sQg; Sun, 28 Jun 2020 07:10:23 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by silver.osuosl.org (Postfix) with ESMTP id E43F92043B; Sun, 28 Jun 2020 07:10:22 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id CC1FCC0865; Sun, 28 Jun 2020 07:10:22 +0000 (UTC) Received: from hemlock.osuosl.org (smtp2.osuosl.org [140.211.166.133]) by lists.linuxfoundation.org (Postfix) with ESMTP id 27702C016E for ; Sun, 28 Jun 2020 07:10:21 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by hemlock.osuosl.org (Postfix) with ESMTP id 13C39881B7 for ; Sun, 28 Jun 2020 07:10:21 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from hemlock.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id zvVZ3TmH8E1Z for ; Sun, 28 Jun 2020 07:10:20 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from verein.lst.de (verein.lst.de [213.95.11.211]) by hemlock.osuosl.org (Postfix) with ESMTPS id CDF7E8818F for ; Sun, 28 Jun 2020 07:10:19 +0000 (UTC) Received: by verein.lst.de (Postfix, from userid 2407) id 301AC68AFE; Sun, 28 Jun 2020 09:10:15 +0200 (CEST) Date: Sun, 28 Jun 2020 09:10:14 +0200 From: Christoph Hellwig To: Richard Weinberger Subject: Re: Passing NULL dev to dma_alloc_coherent() allowed or not? Message-ID: <20200628071014.GA16213@lst.de> References: <1669515915.65540.1593258316061.JavaMail.zimbra@nod.at> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <1669515915.65540.1593258316061.JavaMail.zimbra@nod.at> User-Agent: Mutt/1.5.17 (2007-11-01) Cc: linux-kernel@vger.kernel.org, sumit.semwal@linaro.org, iommu@lists.linux-foundation.org, robin.murphy@arm.com, hch@lst.de, dan.carpenter@oracle.com X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" You can't pass NULL. The synclink case is dead code as we stopped supporting non-PCI adapters a while ago. I had a patch to remove the !PCI code a while ago, but it seems like it never made it upstream. The staging code is, well .. staging code. _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu