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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 8EE89C433EF for ; Tue, 7 Jun 2022 04:05:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:Cc: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=+pbOpgccCtHffNDG8FpbpLCyHduLImRqwXhhAlbQvUE=; b=orvfP73tDuH7xK 10L+Dn3lW0bXrNjB3F8vmfc8DZJDCKXow50YggUMvaECHXI2lLvlmT7cwIyK3A/FJp+IrFbbmxBAS yFs5L/jF2ru3RTDDhhsYZx5AZFeqxDlUwJ7LJSoF2C8WFO3ofIUWMT+ZM4jbw6xUtWHOZjW4eIfCM MbWPmaEde+AuNoNZFa8uqnYZ8taRj7lcb816lwOftt5XEUxxmb+uCbeh/XfMmzaPZApforO2xS7QQ PB7egpFskGrBpuU/4wA/tzfspj/z7Qncdg+iZFiheVfdfReB3KIcKKMq3Of56v61Ot//VlJbvn/ZR 5dlCh3+lK8mpFffsdMFw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nyQRS-004Zm0-N2; Tue, 07 Jun 2022 04:03:42 +0000 Received: from dfw.source.kernel.org ([2604:1380:4641:c500::1]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nyQRP-004ZkX-Hn for linux-arm-kernel@lists.infradead.org; Tue, 07 Jun 2022 04:03:40 +0000 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id E1DDF6149A; Tue, 7 Jun 2022 04:03:38 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id B41EDC385A5; Tue, 7 Jun 2022 04:03:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1654574618; bh=uwZd+PtADOcTNRf/awMnnXVR+GS1giNOlX+OVaKeMZk=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=iHlWr0qRQFXAB+LPXWPfjctaYgXqB20EMpwNVUTePMjdUUtjcI7jJYNz4/BY/g4if 30PvbW+aFEbqc0lSJm3WiRXZsoriemWarVPfUaNkvgoKigPGP7z1NVjLcFwdS6FtWn c3CiFxIgAgUd6ILHCGdiVKWDeTzR3MU9hOW/Kzs6kEkuzmQwABMfvmHdoTh8qhZ0Dh 70Prt0tzaXQnVTNb5U3bffPzaMSFJD8Ug9h7Me85IkiP3ETsxuR5HJYfC4jDHgybly UMw8/f4Qx1CGFGUDmCokXzG4H8+M1RjI0KahCOG+IggwKuAoiL1qzWEJfi91BXHUNo GqkRu32j0BAWA== Date: Tue, 7 Jun 2022 09:33:33 +0530 From: Vinod Koul To: Adrian Larumbe Cc: Christoph Hellwig , michal.simek@xilinx.com, dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: Re: [PATCH] dmaengine: remove DMA_MEMCPY_SG once again Message-ID: References: <20220606074733.622616-1-hch@lst.de> <20220606195455.qmq3yu6mc6g4rmm2@sobremesa> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20220606195455.qmq3yu6mc6g4rmm2@sobremesa> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220606_210339_666118_F659A93E X-CRM114-Status: GOOD ( 16.10 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 06-06-22, 20:54, Adrian Larumbe wrote: > >On 06.06.2022 23:23, Vinod Koul wrote: > >On 06-06-22, 09:47, Christoph Hellwig wrote: > >> This was removed before due to the complete lack of users, but > >> 3218910fd585 ("dmaengine: Add core function and capability check for > >> DMA_MEMCPY_SG") and 29cf37fa6dd9 ("dmaengine: Add consumer for the new > >> DMA_MEMCPY_SG API function.") added it back despite still not having > >> any users whatsoever. > >> > >> Fixes: 3218910fd585 ("dmaengine: Add core function and capability check for DMA_MEMCPY_SG") > >> Fixes: 29cf37fa6dd9 ("dmaengine: Add consumer for the new DMA_MEMCPY_SG API function.") > > > >This is consumer of the driver API and it was bought back with the > >premise that user will also come... > > It's commit 29cf37fa6dd9 ("dmaengine: Add consumer for the new DMA_MEMCPY_SG API function.") > > The two previous commits add the new driver API callback and document it. > > >Adrianm, Michal any reason why user is not mainline yet..? > > Just double checked the mainline, and all three commits are there. There are no clients in mainline which call this API. There is a driver which implements this API, but no users... $ git grep dmaengine_prep_dma_memcpy_sg include/linux/dmaengine.h:static inline struct dma_async_tx_descriptor *dmaengine_prep_dma_memcpy_sg( -- ~Vinod _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel