From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754429Ab3LRKkA (ORCPT ); Wed, 18 Dec 2013 05:40:00 -0500 Received: from mail-pa0-f50.google.com ([209.85.220.50]:47168 "EHLO mail-pa0-f50.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753913Ab3LRKjy (ORCPT ); Wed, 18 Dec 2013 05:39:54 -0500 From: Yuvaraj Kumar C D To: stern@rowland.harvard.edu, gregkh@linuxfoundation.org, kgene.kim@samsung.com, linux-usb@vger.kernel.org, sarah.a.sharp@linux.intel.com, balbi@ti.com, gautam.vivek@samsung.com, joshi@samsung.com Cc: linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-omap@vger.kernel.org, linux-kernel@vger.kernel.org, Andrew Bresticker , Yuvaraj Kumar C D Subject: [RFC 3/5] usb: xhci-plat: enable async suspend/resume Date: Wed, 18 Dec 2013 16:09:32 +0530 Message-Id: <1387363174-25942-3-git-send-email-yuvaraj.cd@samsung.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1387363174-25942-1-git-send-email-yuvaraj.cd@samsung.com> References: <1387363174-25942-1-git-send-email-yuvaraj.cd@samsung.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Andrew Bresticker USB host controllers can take a significant amount of time to suspend and resume, adding several hundred miliseconds to the kernel resume time. Since the XHCI controller has no outside dependencies (other than clocks, which are suspended late/resumed early), allow it to suspend and resume asynchronously. Signed-off-by: Andrew Bresticker Reviewed-by: Julius Werner Signed-off-by: Yuvaraj Kumar C D --- drivers/usb/host/xhci-plat.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c index 8abda5c..1bc1565 100644 --- a/drivers/usb/host/xhci-plat.c +++ b/drivers/usb/host/xhci-plat.c @@ -162,6 +162,8 @@ static int xhci_plat_probe(struct platform_device *pdev) if (ret) goto put_usb3_hcd; + device_enable_async_suspend(&pdev->dev); + return 0; put_usb3_hcd: -- 1.7.9.5