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 X-Spam-Level: X-Spam-Status: No, score=-17.0 required=3.0 tests=BAYES_00,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B999BC433DB for ; Wed, 6 Jan 2021 20:36:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8C2FF23132 for ; Wed, 6 Jan 2021 20:36:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727334AbhAFUej (ORCPT ); Wed, 6 Jan 2021 15:34:39 -0500 Received: from mail-wm1-f51.google.com ([209.85.128.51]:55151 "EHLO mail-wm1-f51.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727287AbhAFUei (ORCPT ); Wed, 6 Jan 2021 15:34:38 -0500 Received: by mail-wm1-f51.google.com with SMTP id c133so3433402wme.4; Wed, 06 Jan 2021 12:34:22 -0800 (PST) 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=mEBt6kadL06yrWP6jkRQ6hKHgAZ+ACyWHQVmdjiqpDc=; b=FnJEJ9HlZIOm13mLClJEQpxGA9+l5M9hc2j1CJBu8BJBQrkqcPfi7Az/otJbl2kgp5 6igK8MvvzlR/+b5rA4RSj4c3PBCj/KbZH4cFOzMYiEH1Q3WUp1flr2z49Aex13/xEeiI ysWnt/5YSpLb4cjj9Bxrd73xXtzQXAX3Wy8Z5tdvSkI3b2npvsn03Z2Q42URm9w2FnGa +wVicu/yFRhd03BfjZXZ8gdQDnzWahZJI90bCOz8V/fQYiViLRIt7QjUJHlAXyvJwaka xHyJGIZJprZtNCgBKXPUpXDH+1e7lvqbwbwgeyYMQzSGUbOlfAJSH7lOp8ZS6ziPcrHZ rxXA== X-Gm-Message-State: AOAM532xlIKUmbAAYfue2PRlYVFrbkGePwywdVdoq6pCoLhutmlrFi+D ei2M0D0Sc/BkMk+yLzvvnAuGFlBEJKE= X-Google-Smtp-Source: ABdhPJywkep2yhD2SXTrIOLI/AJ3IeYO8EdXx5STTEDda+gBvjTvkOZc+5XEMSXwtwC/wQGFPrlDSg== X-Received: by 2002:a05:600c:208:: with SMTP id 8mr5304096wmi.146.1609965236642; Wed, 06 Jan 2021 12:33:56 -0800 (PST) Received: from liuwe-devbox-debian-v2.j3c5onc20sse1dnehy4noqpfcg.zx.internal.cloudapp.net ([51.145.34.42]) by smtp.gmail.com with ESMTPSA id u9sm4499456wmb.32.2021.01.06.12.33.56 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 06 Jan 2021 12:33:56 -0800 (PST) From: Wei Liu To: Linux on Hyper-V List Cc: virtualization@lists.linux-foundation.org, Linux Kernel List , Michael Kelley , Vineeth Pillai , Sunil Muthuswamy , Nuno Das Neves , Wei Liu , "K. Y. Srinivasan" , Haiyang Zhang , Stephen Hemminger Subject: [PATCH v4 03/17] Drivers: hv: vmbus: skip VMBus initialization if Linux is root Date: Wed, 6 Jan 2021 20:33:36 +0000 Message-Id: <20210106203350.14568-4-wei.liu@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20210106203350.14568-1-wei.liu@kernel.org> References: <20210106203350.14568-1-wei.liu@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-hyperv@vger.kernel.org There is no VMBus and the other infrastructures initialized in hv_acpi_init when Linux is running as the root partition. Signed-off-by: Wei Liu --- v3: Return 0 instead of -ENODEV. --- drivers/hv/vmbus_drv.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c index 502f8cd95f6d..ee27b3670a51 100644 --- a/drivers/hv/vmbus_drv.c +++ b/drivers/hv/vmbus_drv.c @@ -2620,6 +2620,9 @@ static int __init hv_acpi_init(void) if (!hv_is_hyperv_initialized()) return -ENODEV; + if (hv_root_partition) + return 0; + init_completion(&probe_event); /* -- 2.20.1