[U-Boot] [PATCH] dm: usb.h: Always declare usb func. prototypes when CONFIG_DM_USB=y

[Marek Vasut <marex@denx.de>]

On Saturday, June 06, 2015 at 10:21:22 AM, Hans de Goede wrote:
> When CONFIG_DM_USB=y the various usb functions are available regardless of
> any controller drivers being enabled, so always the usb function prototypes
> when CONFIG_DM_USB=y.
> 
> This fixes compile warnings due to missing prototypes on ARCHs where
> the ARCH Kconfig always enables CONFIG_DM_USB and various usb drivers.
> 
> One could argue that in the case of no controllers CONFIG_DM_USB should not
> be set, but this problem is typically seen during bringup of boards which
> do actually have usb controllers.
> 
> Signed-off-by: Hans de Goede <hdegoede@redhat.com>
> ---
>  include/usb.h | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/include/usb.h b/include/usb.h
> index c709ce2..54ad33a 100644
> --- a/include/usb.h
> +++ b/include/usb.h
> @@ -180,7 +180,7 @@ enum usb_init_type {
>  	defined(CONFIG_USB_MUSB_DSPS) || defined(CONFIG_USB_MUSB_AM35X) || \
>  	defined(CONFIG_USB_MUSB_OMAP2PLUS) || defined(CONFIG_USB_MUSB_SUNXI) || 
\
>  	defined(CONFIG_USB_XHCI) || defined(CONFIG_USB_DWC2) || \
> -	defined(CONFIG_USB_EMUL)
> +	defined(CONFIG_USB_EMUL) || defined(CONFIG_DM_USB)

What would happen in case we instead dropped this horrible ifdef altogether,
do you think it'd break anything ?

>  int usb_lowlevel_init(int index, enum usb_init_type init, void
> **controller); int usb_lowlevel_stop(int index);

Best regards,
Marek Vasut