Hi Valentine
> >> +/* USBHS */
> >> +#if IS_ENABLED(CONFIG_USB_RENESAS_USBHS_UDC)
> >> +static const struct resource usbhs_resources[] __initconst = {
> >> + DEFINE_RES_MEM(0xe6590000, 0x100),
> >> + DEFINE_RES_IRQ(gic_spi(107)),
> >> +};
> >
> > Why it needs #if IS_ENABLED() ?
> > I guess nothing happen if renesas_usbhs driver
> > registered without CONFIG_USB_RENESAS_USBHS_UDC.
> > But am I misunderstanding ?
> >
>
> Since USB channel 0 is shared between PCI USB host and USBHS
> we'll still need it later to properly configure the channel.
> Besides, is saves us some bits leaving all the unused callbacks and
> device structures out if we do not register the device when the driver
> is disabled.
Ahh, I see.
Sorry for my noise
Best regards
---
Kuninori Morimoto
--
To unsubscribe from this list: send the line "unsubscribe linux-usb" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
