summaryrefslogtreecommitdiff
path: root/include/linux/usb
diff options
context:
space:
mode:
authorDouglas Anderson <dianders@chromium.org>2019-04-17 17:13:53 -0700
committerFelipe Balbi <felipe.balbi@linux.intel.com>2019-05-03 09:13:47 +0300
commit7a6127e39a16c97b505f13352238567fdc3f79a2 (patch)
tree5b6362eba21c4b3b879fa074f2837bdc26a13620 /include/linux/usb
parent6f6d70597c15b2a406afa541517e6ad35f56a8a3 (diff)
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 <dianders@chromium.org> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Diffstat (limited to 'include/linux/usb')
-rw-r--r--include/linux/usb/hcd.h5
1 files changed, 5 insertions, 0 deletions
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;