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

[Thomas Huth <thuth@redhat.com>]

On 15/07/2019 12.54, BALATON Zoltan wrote:
> On Mon, 15 Jul 2019, Philippe Mathieu-Daudé wrote:
>> The USB_EHCI entry currently include PCI code. Since the EHCI
>> implementation is already split in sysbus/PCI, add a new
>> USB_EHCI_PCI. There are no logical changes, but the Kconfig
>> dependencies tree is cleaner.
>>
>> Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
>> ---
>> hw/usb/Kconfig       | 9 ++++++---
>> hw/usb/Makefile.objs | 5 +++--
>> 2 files changed, 9 insertions(+), 5 deletions(-)
>>
>> diff --git a/hw/usb/Kconfig b/hw/usb/Kconfig
>> index 564305e283..495c6f2d48 100644
>> --- a/hw/usb/Kconfig
>> +++ b/hw/usb/Kconfig
>> @@ -19,13 +19,16 @@ config USB_OHCI_PCI
>>
>> config USB_EHCI
>>     bool
>> -    default y if PCI_DEVICES
>> -    depends on PCI
>>     select USB
>>
>> +config USB_EHCI_PCI
>> +    bool
>> +    default y if PCI_DEVICES
>> +    select USB_EHCI
>> +
>> config USB_EHCI_SYSBUS
>>     bool
>> -    select USB
>> +    select USB_EHCI
> 
> Isn't this making USB_EHCI effectively the same as USB so maybe you
> don't need to keep that around any more. Can you just add select USB to
> USB_EHCI_PCI and USB_EHCI_SYSBUS and delete USB_EHCI?

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.

 Thomas