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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,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 0C97CC47082 for ; Wed, 26 May 2021 19:33:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id DD1AC613CD for ; Wed, 26 May 2021 19:33:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234372AbhEZTfV (ORCPT ); Wed, 26 May 2021 15:35:21 -0400 Received: from mga12.intel.com ([192.55.52.136]:16401 "EHLO mga12.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234364AbhEZTfN (ORCPT ); Wed, 26 May 2021 15:35:13 -0400 IronPort-SDR: sKYd8VH6a2JwUgTek6tdGAnlZSCiSFSQDrvqdPge4UTh95rLgibPOizVWBVikKrfT4ahsb62G9 H1hH/76PoObg== X-IronPort-AV: E=McAfee;i="6200,9189,9996"; a="182204270" X-IronPort-AV: E=Sophos;i="5.82,331,1613462400"; d="scan'208";a="182204270" Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 26 May 2021 12:33:39 -0700 IronPort-SDR: LrhzqGbq2nq3gVOtPv0x8/dReGTO0C6emf5sMlz9DlTTdvOOyi59ODY2dfCNJyICK2AHPQm8Ht ksny0iUcXDdg== X-IronPort-AV: E=Sophos;i="5.82,331,1613462400"; d="scan'208";a="464936512" Received: from twinkler-lnx.jer.intel.com ([10.12.91.138]) by fmsmga004-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 26 May 2021 12:33:37 -0700 From: Tomas Winkler To: Greg Kroah-Hartman Cc: Alexander Usyskin , linux-kernel@vger.kernel.org, stable@vger.kernel.org, Tomas Winkler Subject: [char-misc-next] mei: request autosuspend after sending rx flow control Date: Wed, 26 May 2021 22:33:34 +0300 Message-Id: <20210526193334.445759-1-tomas.winkler@intel.com> X-Mailer: git-send-email 2.31.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Alexander Usyskin A rx flow control waiting in the control queue may block autosuspend. Re-request autosuspend after flow control been sent to unblock the transition to the low power state. Cc: Signed-off-by: Alexander Usyskin Signed-off-by: Tomas Winkler --- drivers/misc/mei/interrupt.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/misc/mei/interrupt.c b/drivers/misc/mei/interrupt.c index a98f6b895af7..aab3ebfa9fc4 100644 --- a/drivers/misc/mei/interrupt.c +++ b/drivers/misc/mei/interrupt.c @@ -277,6 +277,9 @@ static int mei_cl_irq_read(struct mei_cl *cl, struct mei_cl_cb *cb, return ret; } + pm_runtime_mark_last_busy(dev->dev); + pm_request_autosuspend(dev->dev); + list_move_tail(&cb->list, &cl->rd_pending); return 0; -- 2.31.1