From 7a6127e39a16c97b505f13352238567fdc3f79a2 Mon Sep 17 00:00:00 2001 From: Douglas Anderson Date: Wed, 17 Apr 2019 17:13:53 -0700 Subject: USB: Export usb_wakeup_enabled_descendants() In (e583d9d USB: global suspend and remote wakeup don't mix) we introduced wakeup_enabled_descendants() as a static function. We'd like to use this function in USB controller drivers to know if we should keep the controller on during suspend time, since doing so has a power impact. Signed-off-by: Douglas Anderson Signed-off-by: Felipe Balbi --- include/linux/usb/hcd.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux/usb') diff --git a/include/linux/usb/hcd.h b/include/linux/usb/hcd.h index 695931b03684..ed4fbbd1b35f 100644 --- a/include/linux/usb/hcd.h +++ b/include/linux/usb/hcd.h @@ -652,11 +652,16 @@ extern wait_queue_head_t usb_kill_urb_queue; #define usb_endpoint_out(ep_dir) (!((ep_dir) & USB_DIR_IN)) #ifdef CONFIG_PM +extern unsigned usb_wakeup_enabled_descendants(struct usb_device *udev); extern void usb_root_hub_lost_power(struct usb_device *rhdev); extern int hcd_bus_suspend(struct usb_device *rhdev, pm_message_t msg); extern int hcd_bus_resume(struct usb_device *rhdev, pm_message_t msg); extern void usb_hcd_resume_root_hub(struct usb_hcd *hcd); #else +static inline unsigned usb_wakeup_enabled_descendants(struct usb_device *udev) +{ + return 0; +} static inline void usb_hcd_resume_root_hub(struct usb_hcd *hcd) { return; -- cgit v1.2.3