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=-10.3 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_SANE_1 autolearn=ham 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 ECCF2C56201 for ; Wed, 25 Nov 2020 20:32:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 825AC206F7 for ; Wed, 25 Nov 2020 20:32:40 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=mg.codeaurora.org header.i=@mg.codeaurora.org header.b="uQ5FpKHV" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730016AbgKYUck (ORCPT ); Wed, 25 Nov 2020 15:32:40 -0500 Received: from m42-4.mailgun.net ([69.72.42.4]:42609 "EHLO m42-4.mailgun.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729937AbgKYUcj (ORCPT ); Wed, 25 Nov 2020 15:32:39 -0500 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1606336359; h=Content-Transfer-Encoding: Content-Type: In-Reply-To: MIME-Version: Date: Message-ID: From: References: Cc: To: Subject: Sender; bh=T6tfjbXzjuiVmiiMnsXOIqV/fCW1WFmdP8ZbLczkG+A=; b=uQ5FpKHVyhrb60v/kifuLG0xAzSVyTOdFDGBh6k5R1kLX88uuW74crVb7NjsJ7ZdO6Ghjj2w FpM2zahAnzjzyHFw55FcM/7AghiDN0Ljpo1JHaz/heljP7WF4p3+bVNZKsuPGyshjED+q5TL 1SDM8vblLSSqU0JFTORUmoWc6zM= X-Mailgun-Sending-Ip: 69.72.42.4 X-Mailgun-Sid: WyI1MzIzYiIsICJsaW51eC1hcm0tbXNtQHZnZXIua2VybmVsLm9yZyIsICJiZTllNGEiXQ== Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by smtp-out-n08.prod.us-east-1.postgun.com with SMTP id 5fbebf659e87e163528d4a16 (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Wed, 25 Nov 2020 20:32:37 GMT Sender: hemantk=codeaurora.org@mg.codeaurora.org Received: by smtp.codeaurora.org (Postfix, from userid 1001) id 94EA7C433C6; Wed, 25 Nov 2020 20:32:36 +0000 (UTC) Received: from [10.46.162.249] (i-global254.qualcomm.com [199.106.103.254]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: hemantk) by smtp.codeaurora.org (Postfix) with ESMTPSA id DC503C433ED; Wed, 25 Nov 2020 20:32:35 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org DC503C433ED Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=fail smtp.mailfrom=hemantk@codeaurora.org Subject: Re: [PATCH v5] bus: mhi: core: Fix device hierarchy To: Loic Poulain , manivannan.sadhasivam@linaro.org Cc: linux-arm-msm@vger.kernel.org, bbhatt@codeaurora.org, jhugo@codeaurora.org References: <1606310689-7189-1-git-send-email-loic.poulain@linaro.org> From: Hemant Kumar Message-ID: Date: Wed, 25 Nov 2020 12:32:35 -0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <1606310689-7189-1-git-send-email-loic.poulain@linaro.org> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org On 11/25/20 5:24 AM, Loic Poulain wrote: > This patch fixes the hierarchical structure of MHI devices. Indeed, > MHI client devices are directly 'enumerated' from the mhi controller > and therefore must be direct descendants/children of their mhi > controller device, in accordance with the Linux Device Model. > > Today both MHI clients and controller devices are at the same level, > this patch ensures that MHI controller is parent of its client devices. > > The hierarchy is especially important for power management (safe > suspend/resume order). It is also useful for userspace to determine > relationship between MHI client devices and controllers. > > Signed-off-by: Loic Poulain > Reviewed-by: Bjorn Andersson Reviewed-by: Hemant Kumar The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project