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=-2.3 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,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 ABA53C41514 for ; Thu, 15 Aug 2019 13:23:25 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 82CFB2084D for ; Thu, 15 Aug 2019 13:23:25 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="DTtMn6Yu"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="PIdKCMQ/" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 82CFB2084D Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linuxfoundation.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=k57I5XqC6zD9Ig63ogdGyNvIKRmW1GLVSO5kw7DINgY=; b=DTtMn6YuWQ1cW7 Jziba3kwpLB1TS9giSNHqX0pJKrsxXltTQFnXLzJZicoimB9UF3NlVvgEdnD656X4V3rM798NY38h 7kI/Gk+ccXzNrDav5j0P40+J7zmUQ+S20Dt06u1LWSoQDe41N3LR+DMBdewlZSRWWJZtQl5Y6YdS7 5/0wuzN2/nI/7JUr8L9Pyh5BEG9jbnEXLSFvTbhiy2TVIvX2cxhuJ2oNKbRPv1lSxlgD5GaioApKC XIuwAQfuCPtjUxN4ewMZiN0/F9vwcpvUlQvMd4Ik3b7qd7uHD2ZITpp4LIcaS6VRhGJLHBpclS3Zd OmlMOR9MIIprDH82JRxg==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1hyFiv-0007oe-3g; Thu, 15 Aug 2019 13:23:25 +0000 Received: from mail.kernel.org ([198.145.29.99]) by bombadil.infradead.org with esmtps (Exim 4.92 #3 (Red Hat Linux)) id 1hyFiq-0007nv-Su for linux-arm-kernel@lists.infradead.org; Thu, 15 Aug 2019 13:23:23 +0000 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (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 B11572084D; Thu, 15 Aug 2019 13:23:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1565875400; bh=v8T3qwF6qiZM++7vAT7AL0JPe0r/NT0kv4QeyOYP/rE=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=PIdKCMQ/Lb50XgkTlSzI4dcJJpEBGXjfxY4vMHFbCuhE6F7PCaSzRKr5kWXihgsd6 CYq+SBnCJXFALaYcaG3aif6qNMb45WH5wI6jKS8CZyb2VbP+PYmponIEA+124IIRAp rJJ2vhvhUrSSeOp1mohuc3t3W+bL3ZyLQHR5jtR4= Date: Thu, 15 Aug 2019 15:23:18 +0200 From: Greg Kroah-Hartman To: Christoph Hellwig Subject: Re: next take at setting up a dma mask by default for platform devices Message-ID: <20190815132318.GA27208@kroah.com> References: <20190811080520.21712-1-hch@lst.de> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20190811080520.21712-1-hch@lst.de> User-Agent: Mutt/1.12.1 (2019-06-15) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190815_062320_958222_11C4E586 X-CRM114-Status: GOOD ( 15.56 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Gavin Li , Fabio Estevam , linux-arch@vger.kernel.org, Michal Simek , Maxime Chevallier , Alan Stern , NXP Linux Team , Mathias Nyman , Sascha Hauer , Minas Harutyunyan , Olav Kongas , Bin Liu , linux-arm-kernel@lists.infradead.org, Laurentiu Tudor , Geoff Levand , Shawn Guo , linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, Tony Prisk , iommu@lists.linux-foundation.org, Pengutronix Kernel Team , linuxppc-dev@lists.ozlabs.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Sun, Aug 11, 2019 at 10:05:14AM +0200, Christoph Hellwig wrote: > Hi all, > > this is another attempt to make sure the dma_mask pointer is always > initialized for platform devices. Not doing so lead to lots of > boilerplate code, and makes platform devices different from all our > major busses like PCI where we always set up a dma_mask. In the long > run this should also help to eventually make dma_mask a scalar value > instead of a pointer and remove even more cruft. > > The bigger blocker for this last time was the fact that the usb > subsystem uses the presence or lack of a dma_mask to check if the core > should do dma mapping for the driver, which is highly unusual. So we > fix this first. Note that this has some overlap with the pending > desire to use the proper dma_mmap_coherent helper for mapping usb > buffers. The first two patches from this series should probably > go into 5.3 and then uses as the basis for the decision to use > dma_mmap_coherent. I've taken the first 2 patches for 5.3-final. Given that patch 3 needs to be fixed, I'll wait for a respin of these before considering them. thanks, greg k-h _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel