From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Fu, Zhonghui" Subject: Re: [PATCH v3] mmc/sdhci-acpi: enable sdhci-acpi device to suspend/resume asynchronously Date: Mon, 23 Nov 2015 12:04:38 +0800 Message-ID: <56529056.9030102@linux.intel.com> References: <56497644.9080903@linux.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Return-path: Received: from mga09.intel.com ([134.134.136.24]:48348 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753063AbbKWEEl (ORCPT ); Sun, 22 Nov 2015 23:04:41 -0500 In-Reply-To: <56497644.9080903@linux.intel.com> Sender: linux-mmc-owner@vger.kernel.org List-Id: linux-mmc@vger.kernel.org To: Ulf Hansson , Adrian Hunter , yunpeng.gao@intel.com, andriy.shevchenko@linux.intel.com, peter.griffin@linaro.org Cc: linux-mmc , "linux-kernel@vger.kernel.org" Any comments are welcome. Thanks, Zhonghui On 11/16/2015 2:23 PM, Fu, Zhonghui wrote: > Now, PM core supports asynchronous suspend/resume mode for devices > during system suspend/resume, and the power state transition of one > device may be completed in separate kernel thread. PM core ensures > all power state transition timing dependency between devices. This > patch enables sdhci-acpi device to suspend/resume asynchronously. > This will take advantage of multicore and improve system > suspend/resume speed. After enabling the sdhci-acpi devices and all > their child devices to suspend/resume asynchronously on ASUS T100TA, > the system suspend-to-idle time is reduced from 1645ms to 1096ms, and > the system resume time is reduced from 940ms to 908ms. > > Signed-off-by: Zhonghui Fu > --- > Changes in v3: > - Add test result in commit message > > drivers/mmc/host/sdhci-acpi.c | 2 ++ > 1 files changed, 2 insertions(+), 0 deletions(-) > > diff --git a/drivers/mmc/host/sdhci-acpi.c b/drivers/mmc/host/sdhci-acpi.c > index f6047fc..3d27f2d 100644 > --- a/drivers/mmc/host/sdhci-acpi.c > +++ b/drivers/mmc/host/sdhci-acpi.c > @@ -388,6 +388,8 @@ static int sdhci_acpi_probe(struct platform_device *pdev) > pm_runtime_enable(dev); > } > > + device_enable_async_suspend(dev); > + > return 0; > > err_free: > -- 1.7.1 >