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=-19.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,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 34B0AC47080 for ; Mon, 31 May 2021 15:19:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 16E06611CB for ; Mon, 31 May 2021 15:19:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232463AbhEaPUx (ORCPT ); Mon, 31 May 2021 11:20:53 -0400 Received: from mail.kernel.org ([198.145.29.99]:43308 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233786AbhEaOPk (ORCPT ); Mon, 31 May 2021 10:15:40 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 97C7461481; Mon, 31 May 2021 13:42:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1622468576; bh=wo3zNAVYL00QHR8T64jEHnbvdwrsEjeG7yg6FtWbvlU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=qjcK4yVEQXLHKziL5GyqPIoHvDj7yx21kex6irkuHfIrZu45IhGYWppFAC58f9i1u ZvlypGVjLSZkRrJZjvGHBBgAajJcAibjyn68DLxPzxHzWjFgJ7LXewnsZkYTFj+QdF PVt2O+8j6ypVzLuRRuWct94OoW//ij12+uhq7yaw= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Alexander Usyskin , Tomas Winkler Subject: [PATCH 5.4 042/177] mei: request autosuspend after sending rx flow control Date: Mon, 31 May 2021 15:13:19 +0200 Message-Id: <20210531130649.374242652@linuxfoundation.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210531130647.887605866@linuxfoundation.org> References: <20210531130647.887605866@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Alexander Usyskin commit bbf0a94744edfeee298e4a9ab6fd694d639a5cdf upstream. 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 Link: https://lore.kernel.org/r/20210526193334.445759-1-tomas.winkler@intel.com Signed-off-by: Greg Kroah-Hartman --- drivers/misc/mei/interrupt.c | 3 +++ 1 file changed, 3 insertions(+) --- a/drivers/misc/mei/interrupt.c +++ b/drivers/misc/mei/interrupt.c @@ -222,6 +222,9 @@ static int mei_cl_irq_read(struct mei_cl return ret; } + pm_runtime_mark_last_busy(dev->dev); + pm_request_autosuspend(dev->dev); + list_move_tail(&cb->list, &cl->rd_pending); return 0;