On Tue, May 16, 2023 at 10:17:42PM +0200, Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd@xxxxxxxx>
>
> The declaration is in an #ifdef, which causes warnings when building
> with 'make W=1' and without CONFIG_PM:
>
> drivers/usb/core/devio.c:742:6: error: no previous prototype for 'usbfs_notify_suspend'
> drivers/usb/core/devio.c:747:6: error: no previous prototype for 'usbfs_notify_resume'
>
> Use the same #ifdef check around the function definitions to avoid
> the warnings and slightly shrink the USB core.
>
> Fixes: 7794f486ed0b ("usbfs: Add ioctls for runtime power management")
> Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
> ---
Acked-by: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>
> drivers/usb/core/devio.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c
> index e501a03d6c70..1622ad35428d 100644
> --- a/drivers/usb/core/devio.c
> +++ b/drivers/usb/core/devio.c
> @@ -738,6 +738,7 @@ static int driver_resume(struct usb_interface *intf)
> return 0;
> }
>
> +#ifdef CONFIG_PM
> /* The following routines apply to the entire device, not interfaces */
> void usbfs_notify_suspend(struct usb_device *udev)
> {
> @@ -756,6 +757,7 @@ void usbfs_notify_resume(struct usb_device *udev)
> }
> mutex_unlock(&usbfs_mutex);
> }
> +#endif
>
> struct usb_driver usbfs_driver = {
> .name = "usbfs",
> --
> 2.39.2
>
