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

From: Paolo Bonzini
Subject: Re: [Qemu-riscv] [Qemu-ppc] [PATCH-for-4.2 2/3] hw/usb/Kconfig: Add CONFIG_USB_EHCI_PCI
Date: Mon, 15 Jul 2019 13:20:43 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.7.2

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.


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