From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752225AbcAVDdO (ORCPT ); Thu, 21 Jan 2016 22:33:14 -0500 Received: from mga02.intel.com ([134.134.136.20]:40582 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751476AbcAVDcW (ORCPT ); Thu, 21 Jan 2016 22:32:22 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.22,328,1449561600"; d="scan'208";a="895825070" To: Ulf Hansson Cc: vbyravarasu@nvidia.com, Adrian Hunter , chaotian.jing@mediatek.com, lars@metafoo.de, Sudeep.Holla@arm.com, sergei.shtylyov@cogentembedded.com, linux-mmc , "linux-kernel@vger.kernel.org" From: "Fu, Zhonghui" Subject: [PATCH 1/2 v2] mmc: enable mmc host device to suspend/resume asynchronously Message-ID: <56A1A2C2.1030106@linux.intel.com> Date: Fri, 22 Jan 2016 11:32:18 +0800 User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:38.0) Gecko/20100101 Thunderbird/38.5.1 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch enables mmc hosts to suspend/resume asynchronously. This will improve system suspend/resume speed. After applying this patch and enabling all mmc hosts' child devices to suspend/resume asynchronously on ASUS T100TA, the system suspend-to-idle time is reduced from 1645ms to 1107ms, and the system resume time is reduced from 940ms to 914ms. Signed-off-by: Zhonghui Fu Acked-by: Venu Byravarasu --- Changes in v2: - Update commit message drivers/mmc/core/host.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/drivers/mmc/core/host.c b/drivers/mmc/core/host.c index 0aecd5c..1d94607 100644 --- a/drivers/mmc/core/host.c +++ b/drivers/mmc/core/host.c @@ -339,6 +339,7 @@ struct mmc_host *mmc_alloc_host(int extra, struct device *dev) host->class_dev.parent = dev; host->class_dev.class = &mmc_host_class; device_initialize(&host->class_dev); + device_enable_async_suspend(&host->class_dev); if (mmc_gpio_alloc(host)) { put_device(&host->class_dev); -- 1.7.1