From patchwork Thu Jul 19 10:15:38 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vivek Gautam X-Patchwork-Id: 10534077 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 1D9DF600F4 for ; Thu, 19 Jul 2018 10:16:20 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 0D68629497 for ; Thu, 19 Jul 2018 10:16:20 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 0129F294D1; Thu, 19 Jul 2018 10:16:19 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.8 required=2.0 tests=BAYES_00,DKIM_SIGNED, MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI, T_DKIM_INVALID autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id AEBC729497 for ; Thu, 19 Jul 2018 10:16:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731205AbeGSK6k (ORCPT ); Thu, 19 Jul 2018 06:58:40 -0400 Received: from smtp.codeaurora.org ([198.145.29.96]:42844 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726630AbeGSK6j (ORCPT ); Thu, 19 Jul 2018 06:58:39 -0400 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id 4C4A2602BD; Thu, 19 Jul 2018 10:16:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1531995373; bh=WmohSbPPu+dCsTh76iaGXLbZTG3Id8WeKCUJ0zOa0SA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=lS5RVdwaDnE3gcR9baMgNpPGwag6SBLCA7Hcw04kKij/SocM05/Mc+rOTLPRzIpmk 2iesuI6DrUxc1j6WGV2weLen17X06CwMQ25YtV7dhTFspup/7TPychac+LKXmqIbc7 iXZd3Dkm8/sWGMBM1+U6/hMFkD8hmCqNzDgUaF0Q= Received: from blr-ubuntu-41.ap.qualcomm.com (blr-bdr-fw-01_globalnat_allzones-outside.qualcomm.com [103.229.18.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: vivek.gautam@smtp.codeaurora.org) by smtp.codeaurora.org (Postfix) with ESMTPSA id B31EE60B22; Thu, 19 Jul 2018 10:16:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1531995370; bh=WmohSbPPu+dCsTh76iaGXLbZTG3Id8WeKCUJ0zOa0SA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=YNjlRWAhiKD3qMHCKjVs6jAWPlrKHz/tr1o1zkO0LOKI9VcF6I5RBfgsLx7mM+6gG HNd05VaxamrXBgv/o/FgsaoVH3oEQLCjnzBSzLd0i/mM1IcPm9hXUc5dn9iE8hYSAA bAU+l0U/Hpi9J7eUh1XTlsmQFmxizuSRdPtX7wEw= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org B31EE60B22 Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=vivek.gautam@codeaurora.org From: Vivek Gautam To: joro@8bytes.org, robh+dt@kernel.org, rjw@rjwysocki.net, robin.murphy@arm.com, will.deacon@arm.com, iommu@lists.linux-foundation.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Cc: alex.williamson@redhat.com, mark.rutland@arm.com, robdclark@gmail.com, linux-pm@vger.kernel.org, freedreno@lists.freedesktop.org, sboyd@kernel.org, tfiga@chromium.org, jcrouse@codeaurora.org, sricharan@codeaurora.org, m.szyprowski@samsung.com, lukas@wunner.de, architt@codeaurora.org, linux-arm-msm@vger.kernel.org, Vivek Gautam Subject: [PATCH v13 3/4] iommu/arm-smmu: Add the device_link between masters and smmu Date: Thu, 19 Jul 2018 15:45:38 +0530 Message-Id: <20180719101539.6104-4-vivek.gautam@codeaurora.org> X-Mailer: git-send-email 2.16.1.72.g5be1f00a9a70 In-Reply-To: <20180719101539.6104-1-vivek.gautam@codeaurora.org> References: <20180719101539.6104-1-vivek.gautam@codeaurora.org> Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Sricharan R Finally add the device link between the master device and smmu, so that the smmu gets runtime enabled/disabled only when the master needs it. This is done from add_device callback which gets called once when the master is added to the smmu. Signed-off-by: Sricharan R Signed-off-by: Vivek Gautam Reviewed-by: Tomasz Figa --- Changes since v12: - device_link_add() doesn't depend on pm_runtime_enabled() now. - Treat failure in device link addition as non-fatal. drivers/iommu/arm-smmu.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c index 15b20941441a..25ff3bdbf7a3 100644 --- a/drivers/iommu/arm-smmu.c +++ b/drivers/iommu/arm-smmu.c @@ -1461,6 +1461,9 @@ static int arm_smmu_add_device(struct device *dev) iommu_device_link(&smmu->iommu, dev); + device_link_add(dev, smmu->dev, + DL_FLAG_PM_RUNTIME | DL_FLAG_AUTOREMOVE_SUPPLIER); + return 0; out_cfg_free: