From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Fu, Zhonghui" Subject: [PATCH 2/2] mmc/sdhci-acpi: enable sdhci-acpi device to suspend/resume asynchronously Date: Mon, 28 Dec 2015 23:41:53 +0800 Message-ID: <56815841.80901@linux.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Return-path: Received: from mga11.intel.com ([192.55.52.93]:59557 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751474AbbL1Pl7 (ORCPT ); Mon, 28 Dec 2015 10:41:59 -0500 Sender: linux-mmc-owner@vger.kernel.org List-Id: linux-mmc@vger.kernel.org To: Ulf Hansson Cc: Adrian Hunter , michele.curti@gmail.com, Andy Shevchenko , linux-mmc , "linux-kernel@vger.kernel.org" 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 dependency between devices. This patch enables sdhci-acpi devices 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 1089ms, and the system resume time is reduced from 940ms to 908ms. Signed-off-by: Zhonghui Fu --- 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