From patchwork Mon Sep 25 22:35:39 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Osipenko X-Patchwork-Id: 818371 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=linux-tegra-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b="fqKyvHNF"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 3y1JpJ2z2sz9sNr for ; Tue, 26 Sep 2017 08:36:08 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754220AbdIYWgH (ORCPT ); Mon, 25 Sep 2017 18:36:07 -0400 Received: from mail-wr0-f196.google.com ([209.85.128.196]:38222 "EHLO mail-wr0-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754112AbdIYWgH (ORCPT ); Mon, 25 Sep 2017 18:36:07 -0400 Received: by mail-wr0-f196.google.com with SMTP id p37so841408wrb.5 for ; Mon, 25 Sep 2017 15:36:06 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :in-reply-to:references; bh=MoalBymd5ncmCeGbqc9OGMbaXfLeM1dC/OkDdkoFES4=; b=fqKyvHNFOzQHMmS9pGywIck9SZA+BH93G1xOuJKn2F36ywuFOXGHmcsqMa6pmLC4pE H42Tv5cnlFukgJWaWwlxlFVL5O4I/ZOXajr1VgEfiiil7Mxiz8lSyRtgQEr+vd/B8SMF AQcBmLWkxk7RNsU3Bn8lCQ5Hs5BIQn8J8aGu3TEAOhTwy5iy2eW+EIPTfH1XvM/TxL1M akeL9nV0hwY+rld2vHIk3V4l47p0idBxO1JlDgCet0pgHTlSnUZy1fylhGjBwB0Eh/pb n+39phfqxv5uaEg60eIbWBc0nB95LyBfMRoNTIOWJL6oMLJaFfeuXVywy8s7byKy9dY0 29ZQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:in-reply-to:references; bh=MoalBymd5ncmCeGbqc9OGMbaXfLeM1dC/OkDdkoFES4=; b=q9BWyNSHwnXGQMOMY3MoWzSvS+23YLzsWOasctNG8BTJZtVWi3vYQJcnAc5A+MEode q0B5zktWAMvPYv7aYqUH4zX4NVzLs4Q7QbaOw7fWI43bu5cVHbJvGtmMvf2/wGN1t/JU vo8VCCWIWV31nEze18NN5xMxgJ54X2FDWGxt9sAoEzqEAG2/ecw8d8sAllUgWfGQBxV8 z0XBK7BcF8mmeKuY5Xr0l1qv9oE8ompRKoH+8iNFl+9DF5nT36peC6z9aZJobsO9JIm/ aEJg1/bb3hmUlHi/0ahnvqL3w13bN02zjk7AuVLYVvs/f2zmH82p1Th+vJQP38rzqBJu aL9w== X-Gm-Message-State: AHPjjUjdRw3r/hHSDiu1P8X401naooGgoFD90dpBXC4aNmfnJLLClSku 03oWFKBa4G3daoxAvRjwJ8w= X-Google-Smtp-Source: AOwi7QDHx+MECMy+YP9aa2KDVwHy5LC6yHeyM/WxUnQEudQcuGQ1VzdVTZWp3Iq/vTfe/y7otnDhAw== X-Received: by 10.25.29.213 with SMTP id d204mr2342061lfd.47.1506378965896; Mon, 25 Sep 2017 15:36:05 -0700 (PDT) Received: from localhost.localdomain (ppp109-252-90-109.pppoe.spdop.ru. [109.252.90.109]) by smtp.gmail.com with ESMTPSA id 97sm1155653lft.17.2017.09.25.15.36.04 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 25 Sep 2017 15:36:05 -0700 (PDT) From: Dmitry Osipenko To: Thierry Reding , Jonathan Hunter Cc: linux-tegra@vger.kernel.org Subject: [PATCH v1 3/3] soc/tegra: fuse: Explicitly request DMA channel from APB DMA driver Date: Tue, 26 Sep 2017 01:35:39 +0300 Message-Id: X-Mailer: git-send-email 2.14.1 In-Reply-To: <27dadd0335aac71c9d4d613c33a6a1d0a285afa4.1506378772.git.digetx@gmail.com> References: <27dadd0335aac71c9d4d613c33a6a1d0a285afa4.1506378772.git.digetx@gmail.com> In-Reply-To: <27dadd0335aac71c9d4d613c33a6a1d0a285afa4.1506378772.git.digetx@gmail.com> References: <27dadd0335aac71c9d4d613c33a6a1d0a285afa4.1506378772.git.digetx@gmail.com> Sender: linux-tegra-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-tegra@vger.kernel.org Currently efuse driver requests DMA channel from an arbitrary DMA device, it is not a problem since there is only one DMA provider for Tegra20 yet, but it will become troublesome once another provider would be added. Signed-off-by: Dmitry Osipenko --- drivers/soc/tegra/fuse/fuse-tegra20.c | 11 +++-------- 1 file changed, 3 insertions(+), 8 deletions(-) diff --git a/drivers/soc/tegra/fuse/fuse-tegra20.c b/drivers/soc/tegra/fuse/fuse-tegra20.c index a33f48c06771..06ec3f9573e6 100644 --- a/drivers/soc/tegra/fuse/fuse-tegra20.c +++ b/drivers/soc/tegra/fuse/fuse-tegra20.c @@ -98,14 +98,9 @@ static u32 tegra20_fuse_read(struct tegra_fuse *fuse, unsigned int offset) static int tegra20_fuse_probe(struct tegra_fuse *fuse) { - dma_cap_mask_t mask; - - dma_cap_zero(mask); - dma_cap_set(DMA_SLAVE, mask); - - fuse->apbdma.chan = dma_request_channel(mask, NULL, NULL); - if (!fuse->apbdma.chan) - return -EPROBE_DEFER; + fuse->apbdma.chan = dma_request_chan(fuse->dev, "fuse"); + if (IS_ERR(fuse->apbdma.chan)) + return PTR_ERR(fuse->apbdma.chan); fuse->apbdma.virt = dma_alloc_coherent(fuse->dev, sizeof(u32), &fuse->apbdma.phys,