The kernel test robot reports two functions that should be marked static: >> drivers/usb/gadget/udc/lpc32xx_udc.c:1928:6: warning: no previous prototype for 'udc_send_in_zlp' [-Wmissing-prototypes] 1928 | void udc_send_in_zlp(struct lpc32xx_udc *udc, struct lpc32xx_ep *ep) >> drivers/usb/gadget/udc/lpc32xx_udc.c:1942:6: warning: no previous prototype for 'udc_handle_eps' [-Wmissing-prototypes] 1942 | void udc_handle_eps(struct lpc32xx_udc *udc, struct lpc32xx_ep *ep) This showed up after my commit 792e559e94bc ("udc: lpc32xx: fix 64-bit compiler warning") made it possible to build the driver on x86-64. Fix the warning as suggested. Reported-by: kernel test robot <lkp@xxxxxxxxx> Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx> --- drivers/usb/gadget/udc/lpc32xx_udc.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/usb/gadget/udc/lpc32xx_udc.c b/drivers/usb/gadget/udc/lpc32xx_udc.c index 465d0b7c6522..4a112670cc6c 100644 --- a/drivers/usb/gadget/udc/lpc32xx_udc.c +++ b/drivers/usb/gadget/udc/lpc32xx_udc.c @@ -1926,7 +1926,7 @@ static const struct usb_ep_ops lpc32xx_ep_ops = { }; /* Send a ZLP on a non-0 IN EP */ -void udc_send_in_zlp(struct lpc32xx_udc *udc, struct lpc32xx_ep *ep) +static void udc_send_in_zlp(struct lpc32xx_udc *udc, struct lpc32xx_ep *ep) { /* Clear EP status */ udc_clearep_getsts(udc, ep->hwep_num); @@ -1940,7 +1940,7 @@ void udc_send_in_zlp(struct lpc32xx_udc *udc, struct lpc32xx_ep *ep) * This function will only be called when a delayed ZLP needs to be sent out * after a DMA transfer has filled both buffers. */ -void udc_handle_eps(struct lpc32xx_udc *udc, struct lpc32xx_ep *ep) +static void udc_handle_eps(struct lpc32xx_udc *udc, struct lpc32xx_ep *ep) { u32 epstatus; struct lpc32xx_request *req; -- 2.27.0