[PATCH v16 5/6] usb: gadget: define stub for usb_udc_vbus_handler

[Sebastian Reichel]

Platform drivers with optional gadget mode support may want to
call usb_udc_vbus_handler to properly handle a cable being
re-plugged.

Ensure these drivers can call the function without a hard dependency on
CONFIG_USB_GADGET or having the ifdef logic in the driver.

Signed-off-by: Sebastian Reichel <sebastian.reichel@xxxxxxxxxxxxx>
---
 include/linux/usb/gadget.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/include/linux/usb/gadget.h b/include/linux/usb/gadget.h
index 8285b19a25e0..551e71b6eda0 100644
--- a/include/linux/usb/gadget.h
+++ b/include/linux/usb/gadget.h
@@ -979,7 +979,12 @@ extern int usb_gadget_ep_match_desc(struct usb_gadget *gadget,
 /*-------------------------------------------------------------------------*/
 
 /* utility to update vbus status for udc core, it may be scheduled */
+#if IS_ENABLED(CONFIG_USB_GADGET)
 extern void usb_udc_vbus_handler(struct usb_gadget *gadget, bool status);
+#else
+static inline void usb_udc_vbus_handler(struct usb_gadget *gadget, bool status)
+{}
+#endif
 
 /*-------------------------------------------------------------------------*/
 

-- 
2.53.0