From patchwork Wed Jan 20 01:50:09 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Osipenko X-Patchwork-Id: 1428965 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=linux-tegra-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20161025 header.b=h3NWcY2g; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4DL7xf0lGmz9sVy for ; Wed, 20 Jan 2021 12:59:34 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729906AbhATB54 (ORCPT ); Tue, 19 Jan 2021 20:57:56 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59256 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731386AbhATBvh (ORCPT ); Tue, 19 Jan 2021 20:51:37 -0500 Received: from mail-lj1-x22f.google.com (mail-lj1-x22f.google.com [IPv6:2a00:1450:4864:20::22f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 49220C061575; Tue, 19 Jan 2021 17:50:57 -0800 (PST) Received: by mail-lj1-x22f.google.com with SMTP id u11so24156794ljo.13; Tue, 19 Jan 2021 17:50:57 -0800 (PST) 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 :mime-version:content-transfer-encoding; bh=ybcPr1W3M4zWRH/hwFZaxAvSfw+Gc9d6ovp3laSwDH4=; b=h3NWcY2gyn6aWdF7c0CY5VtTcvP58xqEnCnQU05TXtCUOsSIq3frqt9BDynCuYAYsG fjzB1TIYAX9tE5e69lNzQMsA4RL9FYuXTIMMcSSf9ynqg5DTZz6kDxMzQOc4K4kSHSLV 3jQ0/4FnglqMzK70jzOgG080bjMHfT7ffjyfU44dYWpzpGTEkPcEc9ptUSIswGF6VLZ1 kSh5A596bHTvrif3QlgwjjTDr8gDbeuhgsEBIFnyk8JPDeHaSMeYs+BhyRYcF7OPJxB+ urra11Og+l5o86L7f8iMcXU7+K1hJaO+8N2dnJ/8u5FNjCyPKOVAh/Os7iW+l6H14PTI xGPw== 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:mime-version:content-transfer-encoding; bh=ybcPr1W3M4zWRH/hwFZaxAvSfw+Gc9d6ovp3laSwDH4=; b=guS7giq3xANOifGYXSFus1HncoFJH76PSQf0mmT+SyPhNO6tZcdFofmQv7GD8YjKvb EHKhMh0C1QkIslC6TeAaf/7iEnk43PU9CQv1P/FkfDxCN9N/6IgsYn0aPwpF2asYDSAz 12IE6Y5OkkP18LduZgG0pLdtys+Flm4aOz2b4SXPwxXNJsb0lBaJzoMHh/SgFyIxGJ/u Kj1E5YToQZxJFwoSvOT7/UK+Lts7kqoBQgus3gFrhqd3p5NAc8OmXrQApv+97QwKuAcN 0vgidhpyxyWP8zG5R9fv9GfvttpkQ6E3eCAeHhsU09oET5QOJq76WmODlx57gCVjsEoM NSHw== X-Gm-Message-State: AOAM531ctjUrGMG+kRmbjoYaB6DSb6vk1jDQwG8zPZeophBwdUK6+0op IJeNjfgtfNv/NiZCEPraalE= X-Google-Smtp-Source: ABdhPJxpaR3X7eLcrmcRa7Kuigbz4QgkpPiGYAJSMBuIQVhwyJJOodVwzQaNGnIzl140AIFoNAnbuA== X-Received: by 2002:a2e:b4af:: with SMTP id q15mr3180904ljm.507.1611107455786; Tue, 19 Jan 2021 17:50:55 -0800 (PST) Received: from localhost.localdomain (109-252-192-57.dynamic.spd-mgts.ru. [109.252.192.57]) by smtp.gmail.com with ESMTPSA id o14sm56163lfi.92.2021.01.19.17.50.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 19 Jan 2021 17:50:55 -0800 (PST) From: Dmitry Osipenko To: Thierry Reding , Jonathan Hunter , Ulf Hansson , Peter Geis , Nicolas Chauvet , "Rafael J. Wysocki" , Kevin Hilman , Peter De Schrijver , Viresh Kumar , Stephen Boyd , Greg Kroah-Hartman , Matt Merhar Cc: linux-kernel@vger.kernel.org, linux-tegra@vger.kernel.org, linux-pm@vger.kernel.org Subject: [PATCH v4 2/3] PM: domains: Make of_genpd_add_subdomain() to return -EPROBE_DEFER Date: Wed, 20 Jan 2021 04:50:09 +0300 Message-Id: <20210120015010.14191-3-digetx@gmail.com> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210120015010.14191-1-digetx@gmail.com> References: <20210120015010.14191-1-digetx@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-tegra@vger.kernel.org Driver of a power domain provider may not be ready at the time of of_genpd_add_subdomain() invocation. Make this function to return -EPROBE_DEFER instead of -ENOENT in order to remove a need from power domain drivers to handle the error code specially. Tested-by: Peter Geis Tested-by: Nicolas Chauvet Tested-by: Matt Merhar [tested on NVIDIA Tegra20/30/124 SoCs] Suggested-by: Ulf Hansson Reviewed-by: Ulf Hansson Reviewed-by: Viresh Kumar Signed-off-by: Dmitry Osipenko --- drivers/base/power/domain.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c index 0bd0cdc30393..def1299ad085 100644 --- a/drivers/base/power/domain.c +++ b/drivers/base/power/domain.c @@ -2466,7 +2466,7 @@ int of_genpd_add_subdomain(struct of_phandle_args *parent_spec, out: mutex_unlock(&gpd_list_lock); - return ret; + return ret == -ENOENT ? -EPROBE_DEFER : ret; } EXPORT_SYMBOL_GPL(of_genpd_add_subdomain);