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 <tomeu.vizoso@xxxxxxxxxxxxx>
---
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
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