From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tomeu Vizoso Subject: [PATCH v2 6/7] [media] media-devnode: Implement dev_pm_ops.prepare callback Date: Fri, 3 Apr 2015 14:57:55 +0200 Message-ID: <1428065887-16017-7-git-send-email-tomeu.vizoso@collabora.com> References: <1428065887-16017-1-git-send-email-tomeu.vizoso@collabora.com> Return-path: In-Reply-To: <1428065887-16017-1-git-send-email-tomeu.vizoso@collabora.com> Sender: linux-kernel-owner@vger.kernel.org To: linux-pm@vger.kernel.org Cc: Tomeu Vizoso , Mauro Carvalho Chehab , linux-media@vger.kernel.org, linux-kernel@vger.kernel.org List-Id: linux-pm@vger.kernel.org Have it return 1 so that media device nodes 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/media-devnode.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/media/media-devnode.c b/drivers/media/media-devnode.c index ebf9626..2c36d0a 100644 --- a/drivers/media/media-devnode.c +++ b/drivers/media/media-devnode.c @@ -76,8 +76,18 @@ static void media_devnode_release(struct device *cd) mdev->release(mdev); } +static int media_bus_prepare(struct device *dev) +{ + return 1; +} + +static const struct dev_pm_ops media_bus_pm_ops = { + .prepare = media_bus_prepare, +}; + static struct bus_type media_bus_type = { .name = MEDIA_NAME, + .pm = &media_bus_pm_ops, }; static ssize_t media_read(struct file *filp, char __user *buf, -- 2.3.4