Re: [Qemu-devel] [Qemu-ppc] [PATCH-for-4.2 2/3] hw/usb/Kconfig: Add CONFIG_USB_EHCI_PCI

[Paolo Bonzini]

On 15/07/19 13:10, BALATON Zoltan wrote:
>>
>> If you want to compile without USB_EHCI_PCI and without USB_EHCI_SYSBUS,
>> but with USB (e.g. due to XHCI), I think we should not include
>> hcd-ehci.o file in the build. So I think it's fine that we have a
>> separate config switch for this file.
> 
> So shouldn't build depend on either USB_EHCI_PCI or USB_EHCI_SYSBUS
> selected then?

No, USB_EHCI is never selected by the user.  The board or default-config
file selects either USB_EHCI_PCI or USB_EHCI_SYSBUS, which brings in
USB_EHCI, which brings in USB, which (optionally) brings in the USB devices.

Paolo