diff options
| author |   Douglas Anderson <dianders@chromium.org> | 2019-04-17 17:13:53 -0700 |
|---|---|---|
| committer |   Felipe Balbi <felipe.balbi@linux.intel.com> | 2019-05-03 09:13:47 +0300 |
| commit | 7a6127e39a16c97b505f13352238567fdc3f79a2 (patch) | |
| tree | 5b6362eba21c4b3b879fa074f2837bdc26a13620 /include/linux/usb/hcd.h | |
| parent | usb: dwc2: bus suspend/resume for hosts with DWC2_POWER_DOWN_PARAM_NONE (diff) | |
| download | linux-dev-7a6127e39a16c97b505f13352238567fdc3f79a2.tar.xz linux-dev-7a6127e39a16c97b505f13352238567fdc3f79a2.zip | |
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/hcd.h')
| -rw-r--r-- | include/linux/usb/hcd.h | 5 |
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; |