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Subject[PATCH v3 2/2] [media] uvcvideo: Remain runtime-suspended at sleeps
Date
When the system goes to sleep and afterwards resumes, a significant
amount of time is spent suspending and resuming devices that were
already runtime-suspended.

By setting the power.force_direct_complete flag, the PM core will ignore
the state of descendant devices and the device will be let in
runtime-suspend.

Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
---
drivers/media/usb/uvc/uvc_driver.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/drivers/media/usb/uvc/uvc_driver.c b/drivers/media/usb/uvc/uvc_driver.c
index 5970dd6..ae75a70 100644
--- a/drivers/media/usb/uvc/uvc_driver.c
+++ b/drivers/media/usb/uvc/uvc_driver.c
@@ -1945,6 +1945,8 @@ static int uvc_probe(struct usb_interface *intf,
"supported.\n", ret);
}

+ intf->dev.parent->power.force_direct_complete = true;
+
uvc_trace(UVC_TRACE_PROBE, "UVC device initialized.\n");
usb_enable_autosuspend(udev);
return 0;
--
2.3.5


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