From patchwork Mon Sep 28 04:09:35 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Manivannan Sadhasivam X-Patchwork-Id: 11802797 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 94379139A for ; Mon, 28 Sep 2020 04:10:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7B1D5239A1 for ; Mon, 28 Sep 2020 04:10:52 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="uj70iwN7" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726595AbgI1EKv (ORCPT ); Mon, 28 Sep 2020 00:10:51 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57422 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726540AbgI1EKv (ORCPT ); Mon, 28 Sep 2020 00:10:51 -0400 Received: from mail-pf1-x444.google.com (mail-pf1-x444.google.com [IPv6:2607:f8b0:4864:20::444]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7A69BC0613CE for ; Sun, 27 Sep 2020 21:10:51 -0700 (PDT) Received: by mail-pf1-x444.google.com with SMTP id l126so8155659pfd.5 for ; Sun, 27 Sep 2020 21:10:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=mLM1ooiBRvHKnVHboD9nW5AfyUuBhafQkkCUD3MREGQ=; b=uj70iwN7Om8mBXDBHTyn3n9uBZav9OQBi2ibF4cPRnAJv1Fgmjp9d0PA6yKsUNCo8p Zml8+Jr/GHooh+CAQ62UnpDtJprVYnoQJvt9i/W9gvJMCjmg9Zgb8i1CgpZV78PNZgar p9F3oueAZEnQdSOBNtQjH0YdD1YAGs6JQcs/pcpqNcw3s2p+PWQGYROh2eMBgJDJ3Vu+ smGF3vvG+kv/tTi6lEoaGsKQ9h3dtE4Uj2JSDZ/FtYMFlblSPE0IhtSrCY8Bo98IBZad S05NDWDclJIxPKPpbKFojFRRfq10cLNTh6LD2Osnyck3cAGVwRKUPzKFFYjXImFN8dih /W/A== 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; bh=mLM1ooiBRvHKnVHboD9nW5AfyUuBhafQkkCUD3MREGQ=; b=mMbhpDX/n1Ykh5XqS+Hx/QctC+O8MxyZ2g22MQMJezj3HGA1H2idWSRSIGX+IHRvJ8 zlIU+CIf90CQ1JVs5QaNI9/oVlVJYBinP3TJXP5D+XH5m8i3HRLB9/xS5MWeJPGN1QCV hR4G38DwuNVIkZ7rYRlaEmDkQpe0tOVza2PhOziFKuSPydmb0+lBFsENNGmq/+NBT1Mr y0mC4jpt7JszKwpT6nIGrklLCcoYfux0+u9uZuHQ8TctvFetdR+NfZl1op4wLb/aCvc7 eqVorIkHm8ltVTEPBjDAo+UFg664ryXAyjuGcXd+5lsz1Rc7TQFNfverVUVhS0dPv+cy 1eCA== X-Gm-Message-State: AOAM5305z/iMM74UQYGzNxUWY2Vf7FckTHGnMsBi7087AP9L+Y8K2yL6 F/am8BjOTPMFi9H/mDCgiKH0 X-Google-Smtp-Source: ABdhPJymDsdfy18yONaUhpTsOEGUG1/Au6IP4UUUgdj7FzjnwfJppAc1PWzIrjCdRn1IjWFRxHaMgw== X-Received: by 2002:a63:e655:: with SMTP id p21mr7539114pgj.420.1601266250974; Sun, 27 Sep 2020 21:10:50 -0700 (PDT) Received: from Mani-XPS-13-9360.localdomain ([2409:4072:6003:40df:7c40:5a87:eb86:87b0]) by smtp.gmail.com with ESMTPSA id n21sm8306322pgl.7.2020.09.27.21.10.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 27 Sep 2020 21:10:50 -0700 (PDT) From: Manivannan Sadhasivam To: gregkh@linuxfoundation.org Cc: hemantk@codeaurora.org, bbhatt@codeaurora.org, linux-arm-msm@vger.kernel.org, jhugo@codeaurora.org, linux-kernel@vger.kernel.org, Manivannan Sadhasivam Subject: [PATCH v2 05/21] bus: mhi: core: Trigger host resume if suspended during mhi_device_get() Date: Mon, 28 Sep 2020 09:39:35 +0530 Message-Id: <20200928040951.18207-6-manivannan.sadhasivam@linaro.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200928040951.18207-1-manivannan.sadhasivam@linaro.org> References: <20200928040951.18207-1-manivannan.sadhasivam@linaro.org> Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org From: Bhaumik Bhatt 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 Signed-off-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 b227d415e937..27bb471c8f4e 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); }