From patchwork Fri Jul 12 23:52:39 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Saravana Kannan X-Patchwork-Id: 1131537 Return-Path: X-Original-To: incoming-dt@patchwork.ozlabs.org Delivered-To: patchwork-incoming-dt@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=devicetree-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=google.com header.i=@google.com header.b="vBSRrli9"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 45lqVx2m5Rz9sNk for ; Sat, 13 Jul 2019 09:53:13 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728639AbfGLXxK (ORCPT ); Fri, 12 Jul 2019 19:53:10 -0400 Received: from mail-vk1-f202.google.com ([209.85.221.202]:53575 "EHLO mail-vk1-f202.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728631AbfGLXxJ (ORCPT ); Fri, 12 Jul 2019 19:53:09 -0400 Received: by mail-vk1-f202.google.com with SMTP id v126so4675505vkv.20 for ; Fri, 12 Jul 2019 16:53:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:in-reply-to:message-id:mime-version:references:subject:from:to :cc; bh=CAlHJy5+PE+GUC+yGE/HoGyC126T/YkJLT0emjsVwvg=; b=vBSRrli97XKmYjaFIGkTrcpCdCNGuE+h8IhFrSjimPFbqLeAsD6MGB4jNFhsSO9U16 aO7Hsb3DRlpZOw7nW7ieuCskwIYYeq4G9U9Dc4U6kCs6M4zxBv4owXK9H/L870Onwxyf Eb1rfA+W2CsEK33teA2bvZH4zYIXX4TxdFtbSRVakoxy1siyL2ZEMCCh4Dj5ajB3Z1DW Knm77sDEisIgodbyts3qx9jkiRdo4T2aotiJnFF5XbFfJnCtGYjsLoJh5/v4zTZFQZIf 4qDSWvdPfYiUQj6h9dF5/U8AA1a8iBbFTjoB0iGNbPtwSHYVIVJNarpjiaR8y3iHb3t2 IOWQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=CAlHJy5+PE+GUC+yGE/HoGyC126T/YkJLT0emjsVwvg=; b=j1IDyennnbjcfWxqkE+zNc7etsNnlC3gebB6CPWGrBtGF/ZN6xQHDPckmBAGCHQDrZ CaZ6hjMjPBQ7UGQN7qC9u055/bq++oU3Sc1k2m8+0JPfetAxHG/klcRNAziGLJBLCkc7 QVfMc2p29ebt6oSPiWtVoTUaJ/zwm4TVeBaLWOAip1+tBQvDBQlsSMsXFGWFehdeInlK rb8YB87mzBH08NeNVWhTHw26ebygvrfo8YCsh+lRLCM8J1NYqn53kkhCGUHz00uhu7LZ Mr1GrkWFKAeADGXm9OnSz0qRPfa5pyRSoAANL2aq83BWgCeyjaiuD27FXTF4L7ehVd7W K0SQ== X-Gm-Message-State: APjAAAW3OlQC/43sz6VRgVR7i7cZi4aoZKb+vpIyyYXoJF9evcWMn41y j2Wm0jrEHrxy0JQ/7geJMmdh4mA/BF8HS3I= X-Google-Smtp-Source: APXvYqzwP48zLLPRZS7QmxTr3oncKEyLjcgCl8Hybw1d/cNDtpOqX9dKb2Tc4NdPmWjX/kIB8o1avR2Bs7ubFXg= X-Received: by 2002:ab0:2556:: with SMTP id l22mr10397175uan.46.1562975588442; Fri, 12 Jul 2019 16:53:08 -0700 (PDT) Date: Fri, 12 Jul 2019 16:52:39 -0700 In-Reply-To: <20190712235245.202558-1-saravanak@google.com> Message-Id: <20190712235245.202558-7-saravanak@google.com> Mime-Version: 1.0 References: <20190712235245.202558-1-saravanak@google.com> X-Mailer: git-send-email 2.22.0.510.g264f2c817a-goog Subject: [PATCH v5 06/11] of/platform: Pause/resume sync state in of_platform_populate() From: Saravana Kannan To: Rob Herring , Mark Rutland , Greg Kroah-Hartman , "Rafael J. Wysocki" , Frank Rowand Cc: Saravana Kannan , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, David Collins , kernel-team@android.com Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org When multiple child devices are populated using of_platform_populate() after kernel init, there could be supplier-consumer dependencies between the child devices. Wait for all the devices to be added and linked before calling sync_state() on all the suppliers. Signed-off-by: Saravana Kannan --- drivers/of/platform.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/of/platform.c b/drivers/of/platform.c index 56b718f09929..dba962a0ee50 100644 --- a/drivers/of/platform.c +++ b/drivers/of/platform.c @@ -486,6 +486,7 @@ int of_platform_populate(struct device_node *root, pr_debug("%s()\n", __func__); pr_debug(" starting at: %pOF\n", root); + device_links_supplier_sync_state_pause(); for_each_child_of_node(root, child) { rc = of_platform_bus_create(child, matches, lookup, parent, true); if (rc) { @@ -493,6 +494,8 @@ int of_platform_populate(struct device_node *root, break; } } + device_links_supplier_sync_state_resume(); + of_node_set_flag(root, OF_POPULATED_BUS); of_node_put(root);