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=-12.8 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 469FFC433ED for ; Tue, 28 Jul 2020 02:02:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2403D2078E for ; Tue, 28 Jul 2020 02:02:52 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=mg.codeaurora.org header.i=@mg.codeaurora.org header.b="AJWV+JSG" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727078AbgG1CCv (ORCPT ); Mon, 27 Jul 2020 22:02:51 -0400 Received: from mail29.static.mailgun.info ([104.130.122.29]:38685 "EHLO mail29.static.mailgun.info" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727020AbgG1CCu (ORCPT ); Mon, 27 Jul 2020 22:02:50 -0400 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1595901770; h=References: In-Reply-To: Message-Id: Date: Subject: Cc: To: From: Sender; bh=1GwQrNQCSG7I+ITNe/q8t3Qe1WXR3VW3IkHkTvo6IBg=; b=AJWV+JSGrlg+XCGJ93A85L9VW38x9qXjUo6LZKV1Li5fEjDXY6cVryHNnEpJv/EOpAYRhqTr kJqshFyaGunRgKkFHkkLqfz2Ose7xqiX9HJNak1IMLokrsi+VidNlqazN9WjkhrfWruuDQsd M5TG3RQA+92sTO0XQQyHYxtkJUs= X-Mailgun-Sending-Ip: 104.130.122.29 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-n06.prod.us-east-1.postgun.com with SMTP id 5f1f87397186ea1ee1763744 (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Tue, 28 Jul 2020 02:02:33 GMT Received: by smtp.codeaurora.org (Postfix, from userid 1001) id B987DC433B6; Tue, 28 Jul 2020 02:02:32 +0000 (UTC) Received: from malabar-linux.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: bbhatt) by smtp.codeaurora.org (Postfix) with ESMTPSA id 1D03DC433AF; Tue, 28 Jul 2020 02:02:32 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 1D03DC433AF 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=none smtp.mailfrom=bbhatt@codeaurora.org From: Bhaumik Bhatt To: manivannan.sadhasivam@linaro.org Cc: linux-arm-msm@vger.kernel.org, hemantk@codeaurora.org, jhugo@codeaurora.org, linux-kernel@vger.kernel.org, Bhaumik Bhatt Subject: [PATCH v6 04/11] bus: mhi: core: Trigger host resume if suspended during mhi_device_get() Date: Mon, 27 Jul 2020 19:02:13 -0700 Message-Id: <1595901740-27379-5-git-send-email-bbhatt@codeaurora.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1595901740-27379-1-git-send-email-bbhatt@codeaurora.org> References: <1595901740-27379-1-git-send-email-bbhatt@codeaurora.org> Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org It is possible that the host may be suspending or suspended and may not allow an outgoing device wake assert immediately if a client has requested for it. Ensure that the host wakes up and allows for it so the client does not have to wait for an external trigger or an outgoing packet to be queued for the host resume to occur. Signed-off-by: Bhaumik Bhatt Reviewed-by: Manivannan Sadhasivam --- drivers/bus/mhi/core/pm.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/bus/mhi/core/pm.c b/drivers/bus/mhi/core/pm.c index b227d41..27bb471 100644 --- a/drivers/bus/mhi/core/pm.c +++ b/drivers/bus/mhi/core/pm.c @@ -1112,6 +1112,9 @@ void mhi_device_get(struct mhi_device *mhi_dev) mhi_dev->dev_wake++; read_lock_bh(&mhi_cntrl->pm_lock); + if (MHI_PM_IN_SUSPEND_STATE(mhi_cntrl->pm_state)) + mhi_trigger_resume(mhi_cntrl); + mhi_cntrl->wake_get(mhi_cntrl, true); read_unlock_bh(&mhi_cntrl->pm_lock); } -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project