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@xxxxxxxxxxxxx>
---
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
--
To unsubscribe from this list: send the line "unsubscribe linux-media" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
