On Friday, June 24, 2016 10:28:50 AM CEST Jiri Kosina wrote:
> From: Jiri Kosina <[email protected]>
>
> Use IS_ENABLED() for checking USB_HIDDEV to make sure compilation works
> for all possible config combinations.
>
> Signed-off-by: Jiri Kosina <[email protected]>
> ---
> include/linux/hiddev.h | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/include/linux/hiddev.h b/include/linux/hiddev.h
> index a5dd814..b6f48d6 100644
> --- a/include/linux/hiddev.h
> +++ b/include/linux/hiddev.h
> @@ -37,7 +37,7 @@ struct hid_usage;
> struct hid_field;
> struct hid_report;
>
> -#ifdef CONFIG_USB_HIDDEV
> +#if IS_ENABLED(CONFIG_USB_HIDDEV)
> int hiddev_connect(struct hid_device *hid, unsigned int force);
> void hiddev_disconnect(struct hid_device *);
> void hiddev_hid_event(struct hid_device *hid, struct hid_field *field,
>
>
CONFIG_USB_HIDDEV is a 'bool' option, so the two look completely
equivalent.
If we wanted to make USB_HIDDEV a loadable module by itself,
we'd also need to export those functions and change both the Kconfig
and Makefile files to ensure that you can't have USB_HIDDEV=m
in combination with USB_HID=y.
What problem are you trying to fix specifically?
Arnd
