From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753306AbbDCM7b (ORCPT ); Fri, 3 Apr 2015 08:59:31 -0400 Received: from mail-wi0-f181.google.com ([209.85.212.181]:37574 "EHLO mail-wi0-f181.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753150AbbDCM6h (ORCPT ); Fri, 3 Apr 2015 08:58:37 -0400 From: Tomeu Vizoso To: linux-pm@vger.kernel.org Cc: Tomeu Vizoso , Mauro Carvalho Chehab , Hans Verkuil , Sakari Ailus , Ramakrishnan Muthukrishnan , Sylwester Nawrocki , linux-media@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 5/7] [media] v4l2-core: Implement dev_pm_ops.prepare() Date: Fri, 3 Apr 2015 14:57:54 +0200 Message-Id: <1428065887-16017-6-git-send-email-tomeu.vizoso@collabora.com> X-Mailer: git-send-email 2.3.4 In-Reply-To: <1428065887-16017-1-git-send-email-tomeu.vizoso@collabora.com> References: <1428065887-16017-1-git-send-email-tomeu.vizoso@collabora.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Have it return 1 so that video devices that are runtime-suspended won't be suspended when the system goes to a sleep state. This can make resume times considerably shorter because these devices don't need to be resumed when the system is awaken. Signed-off-by: Tomeu Vizoso --- drivers/media/v4l2-core/v4l2-dev.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/media/v4l2-core/v4l2-dev.c b/drivers/media/v4l2-core/v4l2-dev.c index e2b8b3e..b74e3d3 100644 --- a/drivers/media/v4l2-core/v4l2-dev.c +++ b/drivers/media/v4l2-core/v4l2-dev.c @@ -219,9 +219,19 @@ static void v4l2_device_release(struct device *cd) v4l2_device_put(v4l2_dev); } +static int video_device_prepare(struct device *dev) +{ + return 1; +} + +static const struct dev_pm_ops video_device_pm_ops = { + .prepare = video_device_prepare, +}; + static struct class video_class = { .name = VIDEO_NAME, .dev_groups = video_device_groups, + .pm = &video_device_pm_ops, }; struct video_device *video_devdata(struct file *file) -- 2.3.4