lkml.org 
[lkml]   [2015]   [Mar]   [31]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 2/6] [media] v4l2-core: Implement dev_pm_ops.prepare()
Date
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 <tomeu.vizoso@collabora.com>
---
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


\
 
 \ /
  Last update: 2015-03-31 18:41    [W:0.181 / U:0.320 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site